Re: [mm, kasan] 80a9201a59: RIP: 0010:[<ffffffff9890f590>] [<ffffffff9890f590>] __kernel_text_address

From: Fengguang Wu
Date: Fri Aug 12 2016 - 05:57:53 EST

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On Fri, Aug 12, 2016 at 03:48:08PM +0800, Fengguang Wu wrote:

On Thu, Aug 11, 2016 at 01:35:03PM -0700, Andrew Morton wrote:

On Thu, 11 Aug 2016 12:52:27 +0800 kernel test robot <fengguang.wu@xxxxxxxxx> wrote:

Greetings,

0day kernel testing robot got the below dmesg and the first bad commit is

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

commit 80a9201a5965f4715d5c09790862e0df84ce0614
Author: Alexander Potapenko <glider@xxxxxxxxxx>
AuthorDate: Thu Jul 28 15:49:07 2016 -0700
Commit: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
CommitDate: Thu Jul 28 16:07:41 2016 -0700

mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB

For KASAN builds:
- switch SLUB allocator to using stackdepot instead of storing the
allocation/deallocation stacks in the objects;
- change the freelist hook so that parts of the freelist can be put
into the quarantine.

...

[ 64.298576] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:1]
[ 64.300827] irq event stamp: 5606950
[ 64.301377] hardirqs last enabled at (5606949): [<ffffffff98a4ef09>] T.2097+0x9a/0xbe
[ 64.302586] hardirqs last disabled at (5606950): [<ffffffff997347a9>] apic_timer_interrupt+0x89/0xa0
[ 64.303991] softirqs last enabled at (5605564): [<ffffffff99735abe>] __do_softirq+0x23e/0x2bb
[ 64.305308] softirqs last disabled at (5605557): [<ffffffff988ee34f>] irq_exit+0x73/0x108
[ 64.306598] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.7.0-05999-g80a9201 #1
[ 64.307678] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 64.326233] task: ffff88000ea19ec0 task.stack: ffff88000ea20000
[ 64.327137] RIP: 0010:[<ffffffff9890f590>] [<ffffffff9890f590>] __kernel_text_address+0xb/0xa1
[ 64.328504] RSP: 0000:ffff88000ea27348 EFLAGS: 00000207
[ 64.329320] RAX: 0000000000000001 RBX: ffff88000ea275c0 RCX: 0000000000000001
[ 64.330426] RDX: ffff88000ea27ff8 RSI: 024080c099733d8f RDI: 024080c099733d8f
[ 64.331496] RBP: ffff88000ea27348 R08: ffff88000ea27678 R09: 0000000000000000
[ 64.332567] R10: 0000000000021298 R11: ffffffff990f235c R12: ffff88000ea276c8
[ 64.333635] R13: ffffffff99805e20 R14: ffff88000ea19ec0 R15: 0000000000000000
[ 64.334706] FS: 0000000000000000(0000) GS:ffff88000ee00000(0000) knlGS:0000000000000000
[ 64.335916] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 64.336782] CR2: 0000000000000000 CR3: 000000000aa0a000 CR4: 00000000000406b0
[ 64.337846] Stack:
[ 64.338206] ffff88000ea273a8 ffffffff9881f3dd 024080c099733d8f ffffffffffff8000
[ 64.339410] ffff88000ea27678 ffff88000ea276c8 000000020e81a4d8 ffff88000ea273f8
[ 64.340602] ffffffff99805e20 ffff88000ea19ec0 ffff88000ea27438 ffff88000ee07fc0
[ 64.348993] Call Trace:
[ 64.349380] [<ffffffff9881f3dd>] print_context_stack+0x68/0x13e
[ 64.350295] [<ffffffff9881e4af>] dump_trace+0x3ab/0x3d6
[ 64.351102] [<ffffffff9882f6e4>] save_stack_trace+0x31/0x5c
[ 64.351964] [<ffffffff98a521db>] kasan_kmalloc+0x126/0x1f6
[ 64.365727] [<ffffffff9882f6e4>] ? save_stack_trace+0x31/0x5c
[ 64.366675] [<ffffffff98a521db>] ? kasan_kmalloc+0x126/0x1f6
[ 64.367560] [<ffffffff9904a8eb>] ? acpi_ut_create_generic_state+0x43/0x5c

At a guess I'd say that
arch/x86/kernel/dumpstack.c:print_context_stack() failed to terminate,
or took a super long time. Is that a thing that is known to be possible?

Andrew, note that this kernel is compiled with gcc-4.4.

This commit caused the below problems, too, with gcc-4.4. However they
no longer show up in mainline HEAD, so not reported before.

The gcc-6 results are roughly the same:

parent first-bad mainline
+----------------------------------------------------------------------------------+------------+------------+------------+
| | c146a2b98e | 80a9201a59 | 4b9eaf33d8 |
+----------------------------------------------------------------------------------+------------+------------+------------+
| boot_successes | 110 | 30 | 102 |
| boot_failures | 2 | 80 | 10 |
| IP-Config:Auto-configuration_of_network_failed | 2 | 1 | |
| Mem-Info | 0 | 4 | 7 |
| BUG_anon_vma_chain(Not_tainted):Poison_overwritten | 0 | 17 | |
| INFO:#-#.First_byte#instead_of | 0 | 53 | |
| INFO:Allocated_in_anon_vma_clone_age=#cpu=#pid= | 0 | 15 | |
| INFO:Freed_in_qlist_free_all_age=#cpu=#pid= | 0 | 52 | |
| INFO:Slab#objects=#used=#fp=0x(null)flags= | 0 | 51 | |
| INFO:Object#@offset=#fp= | 0 | 45 | |
| backtrace:SyS_clone | 0 | 50 | |
| BUG_kmalloc-#(Not_tainted):Poison_overwritten | 0 | 11 | |
| INFO:Allocated_in_kernfs_fop_open_age=#cpu=#pid= | 0 | 3 | |
| backtrace:SyS_open | 0 | 9 | |
| invoked_oom-killer:gfp_mask=0x | 0 | 1 | 3 |
| Out_of_memory:Kill_process | 0 | 1 | 3 |
| backtrace:SyS_mlockall | 0 | 2 | 5 |
| INFO:Allocated_in_anon_vma_prepare_age=#cpu=#pid= | 0 | 7 | |
| backtrace:do_execve | 0 | 29 | |
| backtrace:SyS_execve | 0 | 30 | |
| BUG_vm_area_struct(Not_tainted):Poison_overwritten | 0 | 11 | |
| INFO:Allocated_in_copy_process_age=#cpu=#pid= | 0 | 10 | |
| backtrace:mmap_region | 0 | 6 | |
| backtrace:SyS_mmap_pgoff | 0 | 5 | |
| backtrace:SyS_mmap | 0 | 5 | |
| INFO:Allocated_in_mmap_region_age=#cpu=#pid= | 0 | 5 | |
| backtrace:mprotect_fixup | 0 | 7 | |
| backtrace:SyS_mprotect | 0 | 7 | |
| BUG_skbuff_head_cache(Not_tainted):Poison_overwritten | 0 | 2 | |
| INFO:Allocated_in__alloc_skb_age=#cpu=#pid= | 0 | 5 | |
| backtrace:vfs_write | 0 | 5 | |
| backtrace:SyS_write | 0 | 5 | |
| BUG_names_cache(Not_tainted):Poison_overwritten | 0 | 6 | |
| INFO:Allocated_in_getname_flags_age=#cpu=#pid= | 0 | 8 | |
| INFO:Allocated_in_do_execveat_common_age=#cpu=#pid= | 0 | 4 | |
| BUG_files_cache(Tainted:G_B):Poison_overwritten | 0 | 1 | |
| Oops | 0 | 10 | |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 28 | 1 |
| BUG:unable_to_handle_kernel | 0 | 10 | |
| RIP:vt_console_print | 0 | 10 | |
| BUG:KASAN:use-after-free_in_vma_interval_tree_compute_subtree_last_at_addr | 0 | 5 | |
| BUG:KASAN:use-after-free_in_vma_compute_subtree_gap_at_addr | 0 | 2 | |
| backtrace:load_script | 0 | 11 | |
| backtrace:_do_fork | 0 | 25 | |
| BUG:KASAN:use-after-free_in_put_pid_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_handle_mm_fault_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_native_set_pte_at_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_unmap_page_range_at_addr | 0 | 3 | |
| BUG:Bad_page_map_in_process | 0 | 2 | |
| backtrace:smpboot_thread_fn | 0 | 1 | |
| backtrace:ret_from_fork | 0 | 2 | 1 |
| backtrace:do_group_exit | 0 | 13 | |
| backtrace:SyS_exit_group | 0 | 13 | |
| INFO:Object#@offset=#fp=0x(null) | 0 | 16 | |
| general_protection_fault:#[##]PREEMPT_KASAN | 0 | 18 | 1 |
| RIP:remove_full | 0 | 3 | |
| backtrace:SyS_newstat | 0 | 3 | |
| BUG_anon_vma_chain(Tainted:G_B):Poison_overwritten | 0 | 16 | |
| backtrace:getname | 0 | 1 | |
| backtrace:kernfs_fop_read | 0 | 5 | |
| backtrace:vfs_read | 0 | 5 | |
| backtrace:SyS_read | 0 | 5 | |
| BUG:KASAN:use-after-free_in__rb_insert_augmented_at_addr | 0 | 8 | |
| BUG:KASAN:use-after-free_in_find_vma_at_addr | 0 | 4 | |
| BUG:KASAN:use-after-free_in_vmacache_update_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_vma_interval_tree_remove_at_addr | 0 | 3 | |
| BUG:KASAN:use-after-free_in__do_page_fault_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_arch_vma_access_permitted_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in__rb_erase_color_at_addr | 0 | 6 | |
| BUG:KASAN:use-after-free_in_wp_page_copy_at_addr | 0 | 1 | |
| BUG_vm_area_struct(Tainted:G_B):Poison_overwritten | 0 | 7 | |
| BUG:KASAN:use-after-free_in_get_page_from_freelist_at_addr | 0 | 1 | |
| BUG_dentry(Tainted:G_B):Poison_overwritten | 0 | 1 | |
| INFO:Allocated_in__d_alloc_age=#cpu=#pid= | 0 | 1 | |
| BUG:KASAN:use-after-free_in_unlink_anon_vmas_at_addr | 0 | 15 | |
| RIP:unlink_anon_vmas | 0 | 12 | |
| backtrace:SyS_readlink | 0 | 3 | |
| INFO:Allocated_in_kzalloc_age=#cpu=#pid= | 0 | 6 | |
| BUG_kmalloc-#(Tainted:G_B):Poison_overwritten | 0 | 10 | |
| INFO:Allocated_in_load_elf_phdrs_age=#cpu=#pid= | 0 | 3 | |
| INFO:Allocated_in_do_brk_age=#cpu=#pid= | 0 | 1 | |
| INFO:Allocated_in_anon_vma_fork_age=#cpu=#pid= | 0 | 9 | |
| BUG:KASAN:use-after-free_in__anon_vma_interval_tree_compute_subtree_last_at_addr | 0 | 6 | |
| BUG:KASAN:use-after-free_in__anon_vma_interval_tree_augment_rotate_at_addr | 0 | 4 | |
| BUG:KASAN:use-after-free_in__rb_rotate_set_parents_at_addr | 0 | 7 | |
| BUG:KASAN:use-after-free_in_anon_vma_interval_tree_remove_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in__anon_vma_interval_tree_augment_propagate_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_anon_vma_interval_tree_insert_at_addr | 0 | 4 | |
| INFO:Slab#objects=#used=#fp=#flags= | 0 | 3 | |
| BUG_names_cache(Tainted:G_B):Poison_overwritten | 0 | 4 | |
| backtrace:SyS_mount | 0 | 1 | |
| backtrace:SyS_symlink | 0 | 3 | |
| BUG_skbuff_head_cache(Tainted:G_B):Poison_overwritten | 0 | 2 | |
| backtrace:SyS_sendto | 0 | 1 | |
| BUG:KASAN:use-after-free_in_vma_interval_tree_augment_rotate_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_vma_last_pgoff_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_vma_interval_tree_augment_propagate_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_vma_interval_tree_insert_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_unmap_vmas_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_print_bad_pte_at_addr | 0 | 1 | |
| backtrace:vm_mmap_pgoff | 0 | 1 | |
| BUG:KASAN:use-after-free_in_copy_process_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_anon_vma_fork_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_copy_page_range_at_addr | 0 | 1 | |
| backtrace:___slab_alloc | 0 | 3 | |
| RIP:__wake_up_common | 0 | 1 | 1 |
| backtrace:fd_timer_workfn | 0 | 1 | 1 |
| INFO:Allocated_in__install_special_mapping_age=#cpu=#pid= | 0 | 1 | |
| BUG:KASAN:use-after-free_in_locks_remove_posix_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in___sys_sendmsg_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_sock_sendmsg_nosec_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_netlink_sendmsg_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in__sys_sendmsg_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_sock_poll_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_datagram_poll_at_addr | 0 | 1 | |
| backtrace:SyS_pipe | 0 | 1 | |
| backtrace:__close_fd | 0 | 1 | |
| backtrace:SyS_close | 0 | 1 | |
| backtrace:SYSC_socket | 0 | 1 | |
| backtrace:SyS_socket | 0 | 2 | |
| backtrace:SyS_sendmsg | 0 | 3 | |
| backtrace:__sys_sendmsg | 0 | 1 | |
| backtrace:SyS_ppoll | 0 | 1 | |
| BUG_files_cache(Not_tainted):Poison_overwritten | 0 | 1 | |
| INFO:Allocated_in_dup_fd_age=#cpu=#pid= | 0 | 1 | |
| INFO:Allocated_in_uevent_show_age=#cpu=#pid= | 0 | 1 | |
| backtrace:SyS_munmap | 0 | 1 | |
| BUG:KASAN:use-after-free_in_anon_vma_clone_at_addr | 0 | 2 | |
| RIP:anon_vma_clone | 0 | 2 | |
| INFO:Allocated_in_getname_kernel_age=#cpu=#pid= | 0 | 2 | |
| INFO:Allocated_in__split_vma_age=#cpu=#pid= | 0 | 2 | |
| BUG:KASAN:use-after-free_in_rcu_process_callbacks_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_unlink_file_vma_at_addr | 0 | 2 | |
| BUG:KASAN:use-after-free_in_remove_vma_at_addr | 0 | 2 | |
| backtrace:SYSC_newstat | 0 | 1 | |
| BUG_fs_cache(Tainted:G_B):Poison_overwritten | 0 | 1 | |
| INFO:Allocated_in_copy_fs_struct_age=#cpu=#pid= | 0 | 1 | |
| backtrace:handle_mm_fault | 0 | 1 | |
| BUG:KASAN:use-after-free_in_unmapped_area_topdown_at_addr | 0 | 1 | |
| INFO:Allocated_in__list_lru_init_age=#cpu=#pid= | 0 | 1 | |
| BUG:KASAN:use-after-free_in__vma_link_rb_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_vma_gap_callbacks_propagate_at_addr | 0 | 1 | |
| backtrace:SyS_mknod | 0 | 1 | |
| INFO:Allocated_in_kobject_uevent_env_age=#cpu=#pid= | 0 | 1 | |
| BUG:KASAN:use-after-free_in_free_pgtables_at_addr | 0 | 1 | |
| BUG:KASAN:use-after-free_in_exit_mmap_at_addr | 0 | 1 | |
| BUG:kernel_test_oversize | 0 | 0 | 2 |
+----------------------------------------------------------------------------------+------------+------------+------------+

Here are the detailed Oops listing on this commit, with the trinity OOMs removed.

dmesg-quantal-ivb41-10:20160812160230:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 101.754306] init: Failed to create pty - disabling logging for job
[ 101.860052] init: Temporary process spawn error: No such file or directory
[ 101.939827] =============================================================================
[ 101.943713] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 101.946151] -----------------------------------------------------------------------------
[ 101.946151] [ 101.956210] Disabling lock debugging due to kernel taint
[ 101.961535] INFO: 0xffff88000922e9d5-0xffff88000922e9d7. First byte 0x1 instead of 0x6b
[ 101.968051] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=536 cpu=0 pid=253
[ 102.012093] INFO: Freed in qlist_free_all+0x33/0xac age=59 cpu=0 pid=255
[ 102.073932] INFO: Slab 0xffffea0000248b80 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 102.084787] INFO: Object 0xffff88000922e9c8 @offset=2504 fp=0xffff88000922f388
[ 102.084787] [ 102.095451] Redzone ffff88000922e9c0: bb bb bb bb bb bb bb bb ........
[ 102.103305] Object ffff88000922e9c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 40 82 kkkkkkkkkkkkk.@.
[ 102.111187] Object ffff88000922e9d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 102.119169] Object ffff88000922e9e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 102.127071] Object ffff88000922e9f8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 102.138649] Redzone ffff88000922ea08: bb bb bb bb bb bb bb bb ........
[ 102.142155] Padding ffff88000922eb54: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 102.145703] CPU: 0 PID: 255 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 102.149473] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 102.154920] 0000000000000000 ffff88000a2a79d8 ffffffff81c91ab5 ffff88000a2a7a08
[ 102.158925] ffffffff81330f07 ffff88000922e9d5 000000000000006b ffff8800110131c0
[ 102.162965] ffff88000922e9d7 ffff88000a2a7a58 ffffffff81330fac ffffffff83592f26
[ 102.166534] Call Trace:
[ 102.167926] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 102.169917] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 102.172282] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 102.174549] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 102.176815] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 102.180023] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 102.182520] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 102.184919] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 102.187331] [<ffffffff81334818>] ? kasan_unpoison_shadow+0x14/0x35
[ 102.189613] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 102.191936] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 102.194468] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 102.197302] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 102.200729] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 102.203125] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 102.205249] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 102.207331] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 102.209633] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 102.212180] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 102.214374] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 102.216708] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 102.219151] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 102.221418] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 102.223830] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 102.225997] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 102.228515] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 102.230565] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 102.232791] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 102.235308] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 102.237796] FIX anon_vma_chain: Restoring 0xffff88000922e9d5-0xffff88000922e9d7=0x6b

dmesg-quantal-ivb41-129:20160812160254:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 111.625693] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 111.625717] power_supply test_usb: prop ONLINE=1
[ 113.494934] =============================================================================
[ 113.494939] BUG kmalloc-64 (Not tainted): Poison overwritten
[ 113.494940] -----------------------------------------------------------------------------
[ 113.494940] [ 113.494941] Disabling lock debugging due to kernel taint
[ 113.494944] INFO: 0xffff88000a70b535-0xffff88000a70b537. First byte 0x1 instead of 0x6b
[ 113.494953] INFO: Allocated in kernfs_fop_open+0x6fb/0x840 age=153 cpu=0 pid=246
[ 113.494993] INFO: Freed in qlist_free_all+0x33/0xac age=86 cpu=0 pid=238
[ 113.495036] INFO: Slab 0xffffea000029c280 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 113.495039] INFO: Object 0xffff88000a70b528 @offset=5416 fp=0xffff88000a70a828
[ 113.495039] [ 113.495043] Redzone ffff88000a70b520: bb bb bb bb bb bb bb bb ........
[ 113.495046] Object ffff88000a70b528: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 a0 c9 kkkkkkkkkkkkk...
[ 113.495049] Object ffff88000a70b538: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 113.495052] Object ffff88000a70b548: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 113.495054] Object ffff88000a70b558: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 113.495057] Redzone ffff88000a70b568: bb bb bb bb bb bb bb bb ........
[ 113.495060] Padding ffff88000a70b6b4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 113.495064] CPU: 0 PID: 238 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 113.495066] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 113.495071] 0000000000000000 ffff88000adc77d8 ffffffff81c91ab5 ffff88000adc7808
[ 113.495075] ffffffff81330f07 ffff88000a70b535 000000000000006b ffff8800110036c0
[ 113.495079] ffff88000a70b537 ffff88000adc7858 ffffffff81330fac ffffffff83592f26
[ 113.495079] Call Trace:
[ 113.495084] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 113.495088] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 113.495091] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 113.495094] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 113.495098] [<ffffffff81425fc3>] ? kernfs_fop_open+0x6fb/0x840
[ 113.495101] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 113.495104] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 113.495108] [<ffffffff81334595>] ? kasan_poison_shadow+0x2f/0x31
[ 113.495111] [<ffffffff81425fc3>] ? kernfs_fop_open+0x6fb/0x840
[ 113.495116] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 113.495119] [<ffffffff81425fc3>] ? kernfs_fop_open+0x6fb/0x840
[ 113.495123] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 113.495126] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 113.495129] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 113.495133] [<ffffffff81425fc3>] kernfs_fop_open+0x6fb/0x840
[ 113.495136] [<ffffffff81342aed>] do_dentry_open+0x361/0x6fe
[ 113.495140] [<ffffffff814258c8>] ? kernfs_fop_read+0x3ab/0x3ab
[ 113.495143] [<ffffffff813442fd>] vfs_open+0x179/0x186
[ 113.495156] [<ffffffff81363618>] path_openat+0x198c/0x1c58
[ 113.495161] [<ffffffff81d05cc7>] ? depot_save_stack+0x13c/0x390
[ 113.495164] [<ffffffff813347b1>] ? save_stack+0xc4/0xce
[ 113.495167] [<ffffffff81361c8c>] ? filename_mountpoint+0x17e/0x17e

dmesg-quantal-ivb41-16:20160812160241:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 105.110247] init: Failed to create pty - disabling logging for job
[ 105.110381] init: Temporary process spawn error: No such file or directory
[ 106.640168] =============================================================================
[ 106.640172] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 106.640174] -----------------------------------------------------------------------------
[ 106.640174] [ 106.640174] Disabling lock debugging due to kernel taint
[ 106.640178] INFO: 0xffff880008d8eb75-0xffff880008d8eb77. First byte 0x1 instead of 0x6b
[ 106.640187] INFO: Allocated in anon_vma_prepare+0x6b/0x2db age=138 cpu=0 pid=415
[ 106.640223] INFO: Freed in qlist_free_all+0x33/0xac age=26 cpu=0 pid=239
[ 106.640269] INFO: Slab 0xffffea0000236380 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 106.640271] INFO: Object 0xffff880008d8eb68 @offset=2920 fp=0xffff880008d8f528
[ 106.640271] [ 106.640275] Redzone ffff880008d8eb60: bb bb bb bb bb bb bb bb ........
[ 106.640278] Object ffff880008d8eb68: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 c0 90 kkkkkkkkkkkkk...
[ 106.640281] Object ffff880008d8eb78: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 106.640284] Object ffff880008d8eb88: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 106.640287] Object ffff880008d8eb98: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 106.640289] Redzone ffff880008d8eba8: bb bb bb bb bb bb bb bb ........
[ 106.640292] Padding ffff880008d8ecf4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 106.640296] CPU: 0 PID: 398 Comm: ifup Tainted: G B 4.7.0-05999-g80a9201 #1
[ 106.640298] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 106.640304] 0000000000000000 ffff8800088bf6d8 ffffffff81c91ab5 ffff8800088bf708
[ 106.640308] ffffffff81330f07 ffff880008d8eb75 000000000000006b ffff8800110131c0
[ 106.640311] ffff880008d8eb77 ffff8800088bf758 ffffffff81330fac ffffffff83592f26
[ 106.640312] Call Trace:
[ 106.640317] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 106.640321] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 106.640324] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 106.640327] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 106.640330] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 106.640334] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 106.640338] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 106.640340] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 106.640343] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 106.640347] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 106.640350] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 106.640353] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 106.640356] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 106.640360] [<ffffffff81304113>] handle_mm_fault+0xcf6/0x11bb
[ 106.640363] [<ffffffff8130341d>] ? apply_to_page_range+0x2fb/0x2fb
[ 106.640367] [<ffffffff8130e21e>] ? SyS_munmap+0x81/0x81
[ 106.640372] [<ffffffff810e82be>] ? arch_get_unmapped_area+0x39c/0x39c

dmesg-quantal-ivb41-26:20160812160257:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 111.995978] init: Failed to create pty - disabling logging for job
[ 111.996117] init: Temporary process spawn error: No such file or directory
[ 114.698502] =============================================================================
[ 114.698515] BUG vm_area_struct (Not tainted): Poison overwritten
[ 114.698516] -----------------------------------------------------------------------------
[ 114.698516] [ 114.698517] Disabling lock debugging due to kernel taint
[ 114.698521] INFO: 0xffff880008488a8c-0xffff880008488a8f. First byte 0x6a instead of 0x6b
[ 114.698579] INFO: Allocated in copy_process+0x2323/0x424c age=107 cpu=0 pid=419
[ 114.698676] INFO: Freed in qlist_free_all+0x33/0xac age=11 cpu=0 pid=263
[ 114.698730] INFO: Slab 0xffffea0000212200 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 114.698733] INFO: Object 0xffff880008488a80 @offset=2688 fp=0xffff880008488220
[ 114.698733] [ 114.698742] Redzone ffff880008488a78: bb bb bb bb bb bb bb bb ........
[ 114.698747] Object ffff880008488a80: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6a 01 80 e4 kkkkkkkkkkkkj...
[ 114.698749] Object ffff880008488a90: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 114.698752] Object ffff880008488aa0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-quantal-ivb41-42:20160812160302:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 106.294052] init: Failed to create pty - disabling logging for job
[ 106.294199] init: Temporary process spawn error: No such file or directory
[ 107.451301] =============================================================================
[ 107.451306] BUG vm_area_struct (Not tainted): Poison overwritten
[ 107.451307] -----------------------------------------------------------------------------
[ 107.451307] [ 107.451308] Disabling lock debugging due to kernel taint
[ 107.451312] INFO: 0xffff88000914665c-0xffff88000914665f. First byte 0x6a instead of 0x6b
[ 107.451321] INFO: Allocated in copy_process+0x2323/0x424c age=140 cpu=0 pid=1
[ 107.451353] INFO: Freed in qlist_free_all+0x33/0xac age=67 cpu=0 pid=261
[ 107.451397] INFO: Slab 0xffffea0000245180 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 107.451399] INFO: Object 0xffff880009146650 @offset=1616 fp=0xffff880009147d58
[ 107.451399] [ 107.451403] Redzone ffff880009146648: bb bb bb bb bb bb bb bb ........
[ 107.451406] Object ffff880009146650: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6a 01 e0 e5 kkkkkkkkkkkkj...
[ 107.451409] Object ffff880009146660: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 107.451411] Object ffff880009146670: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-quantal-ivb41-52:20160812160241:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 106.678891] irda_setsockopt: not allowed to set MAXSDUSIZE for this socket type!
[ 106.749546] power_supply test_ac: prop ONLINE=1
[ 107.430823] =============================================================================
[ 107.434407] BUG vm_area_struct (Not tainted): Poison overwritten
[ 107.436760] -----------------------------------------------------------------------------
[ 107.436760] [ 107.449972] Disabling lock debugging due to kernel taint
[ 107.452404] INFO: 0xffff880009bd2874-0xffff880009bd2877. First byte 0x6a instead of 0x6b
[ 107.456114] INFO: Allocated in mmap_region+0x33a/0xa41 age=359 cpu=0 pid=440
[ 107.500267] INFO: Freed in qlist_free_all+0x33/0xac age=58 cpu=0 pid=264
[ 107.547459] INFO: Slab 0xffffea000026f480 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 107.551406] INFO: Object 0xffff880009bd2868 @offset=2152 fp=0xffff880009bd3928
[ 107.551406] [ 107.562146] Redzone ffff880009bd2860: bb bb bb bb bb bb bb bb ........
[ 107.565909] Object ffff880009bd2868: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6a 01 80 fc kkkkkkkkkkkkj...
[ 107.573610] Object ffff880009bd2878: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 107.576946] Object ffff880009bd2888: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-quantal-ivb41-71:20160812160239:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 103.201437] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 103.201462] power_supply test_usb: prop ONLINE=1
[ 104.201388] =============================================================================
[ 104.201393] BUG skbuff_head_cache (Not tainted): Poison overwritten
[ 104.201394] -----------------------------------------------------------------------------
[ 104.201394] [ 104.201395] Disabling lock debugging due to kernel taint
[ 104.201397] INFO: 0xffff88000a459b8c-0xffff88000a459b8f. First byte 0x6d instead of 0x6b
[ 104.201406] INFO: Allocated in __alloc_skb+0xad/0x498 age=169 cpu=0 pid=1
[ 104.201451] INFO: Freed in qlist_free_all+0x33/0xac age=13 cpu=0 pid=254
[ 104.201493] INFO: Slab 0xffffea0000291600 objects=10 used=10 fp=0x (null) flags=0x4000000000004080
[ 104.201495] INFO: Object 0xffff88000a459b80 @offset=7040 fp=0xffff88000a458980
[ 104.201495] [ 104.201500] Redzone ffff88000a459b00: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201503] Redzone ffff88000a459b10: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201506] Redzone ffff88000a459b20: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201508] Redzone ffff88000a459b30: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201511] Redzone ffff88000a459b40: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201513] Redzone ffff88000a459b50: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201516] Redzone ffff88000a459b60: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201519] Redzone ffff88000a459b70: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.201521] Object ffff88000a459b80: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6d 01 e0 af kkkkkkkkkkkkm...
[ 104.201524] Object ffff88000a459b90: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 104.201527] Object ffff88000a459ba0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-quantal-ivb41-96:20160812160242:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

udevd[310]: failed to execute '/sbin/modprobe' '/sbin/modprobe -bv pci:v00001234d00001111sv00001AF4sd00001100bc03sc00i00': No such file or directory
udevd[358]: failed to execute '/sbin/modprobe' '/sbin/modprobe -bv dmi:bvnSeaBIOS:bvrDebian-1.8.2-1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.4:cvnQEMU:ct1:cvrpc-i440fx-2.4:': No such file or directory
[ 110.688412] =============================================================================
[ 110.692354] BUG names_cache (Not tainted): Poison overwritten
[ 110.694901] -----------------------------------------------------------------------------
[ 110.694901] [ 110.699914] Disabling lock debugging due to kernel taint
[ 110.702057] INFO: 0xffff880009a4b58c-0xffff880009a4b58f. First byte 0x69 instead of 0x6b
[ 110.705346] INFO: Allocated in getname_flags+0x5a/0x35c age=85 cpu=0 pid=253
[ 110.727505] INFO: Freed in qlist_free_all+0x33/0xac age=8 cpu=0 pid=1
[ 110.766664] INFO: Slab 0xffffea0000269200 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 110.770745] INFO: Object 0xffff880009a4b580 @offset=13696 fp=0xffff880009a4c740
[ 110.770745] [ 110.777537] Redzone ffff880009a4b540: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 110.789632] Redzone ffff880009a4b550: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 110.805843] Redzone ffff880009a4b560: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 110.809851] Redzone ffff880009a4b570: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 110.813955] Object ffff880009a4b580: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 69 01 00 a7 kkkkkkkkkkkki...
[ 110.818081] Object ffff880009a4b590: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 110.825439] Object ffff880009a4b5a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-vm-ivb41-quantal-x86_64-14:20160812160512:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

udevd[350]: failed to execute '/sbin/modprobe' '/sbin/modprobe -bv input:b0011v0001p0001eAB41-e0,1,4,11,14,k71,72,73,74,75,76,77,79,7A,7B,7C,7D,7E,7F,80,8C,8E,8F,9B,9C,9D,9E,9F,A3,A4,A5,A6,AC,AD,B7,B8,B9,D9,E2,ram4,l0,1,2,sfw': No such file or directory
udevd[349]: failed to execute '/sbin/modprobe' '/sbin/modprobe -bv acpi:PNP0F13:': No such file or directory
[ 72.009404] =============================================================================
[ 72.012878] BUG kmalloc-512 (Not tainted): Poison overwritten
[ 72.015063] -----------------------------------------------------------------------------
[ 72.015063] [ 72.019443] Disabling lock debugging due to kernel taint
[ 72.021499] INFO: 0xffff880017642a35-0xffff880017642a37. First byte 0x1 instead of 0x6b
[ 72.037465] INFO: Allocated in load_elf_phdrs+0x9a/0xf4 age=169 cpu=0 pid=356
[ 72.065799] INFO: Freed in qlist_free_all+0x33/0xac age=67 cpu=0 pid=265
[ 72.121094] INFO: Slab 0xffffea00005d9080 objects=9 used=9 fp=0x (null) flags=0x4000000000004080
[ 72.125452] INFO: Object 0xffff880017642a28 @offset=2600 fp=0x (null)
[ 72.125452] [ 72.130200] Redzone ffff880017642a20: bb bb bb bb bb bb bb bb ........
[ 72.134294] Object ffff880017642a28: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 80 b1 kkkkkkkkkkkkk...
[ 72.138544] Object ffff880017642a38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 72.142802] Object ffff880017642a48: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-vm-ivb41-quantal-x86_64-1:20160812160325:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 75.545932] ipconfig: ipddp0: socket(AF_INET): Address family not supported by protocol
[ 75.551674] ipconfig: no devices to configure
[ 75.558551] /usr/share/initramfs-tools/scripts/functions: line 491: /run/net-eth0.conf: No such file or directory
!!! IP-Config: Auto-configuration of network failed !!!
[ 75.860942] !!! IP-Config: Auto-configuration of network failed !!!
error: 'rc.local' exited outside the expected code flow.
[ 75.931858] init: Failed to create pty - disabling logging for job
[ 75.933512] init: Temporary process spawn error: No such file or directory

dmesg-yocto-ivb41-105:20160812160231:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 106.928062] blk_update_request: I/O error, dev fd0, sector 0
[ 106.929740] floppy: error -5 while reading block 0
[ 107.012218] =============================================================================
[ 107.019136] BUG kmalloc-256 (Not tainted): Poison overwritten
[ 107.020787] -----------------------------------------------------------------------------
[ 107.020787] [ 107.024336] Disabling lock debugging due to kernel taint
[ 107.025926] INFO: 0xffff880008ca2e54-0xffff880008ca2e57. First byte 0x6c instead of 0x6b
[ 107.028595] INFO: Allocated in do_execveat_common+0x268/0x11d2 age=281 cpu=0 pid=352
[ 107.076371] INFO: Freed in qlist_free_all+0x33/0xac age=227 cpu=0 pid=291
[ 107.149193] INFO: Slab 0xffffea0000232880 objects=13 used=13 fp=0x (null) flags=0x4000000000004080
[ 107.167264] INFO: Object 0xffff880008ca2e48 @offset=3656 fp=0xffff880008ca3c88
[ 107.167264] [ 107.170622] Redzone ffff880008ca2e40: bb bb bb bb bb bb bb bb ........
[ 107.173376] Object ffff880008ca2e48: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 00 ae kkkkkkkkkkkkl...
[ 107.195350] Object ffff880008ca2e58: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 107.198226] Object ffff880008ca2e68: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-108:20160812160251:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 110.935770] ==================================================================
[ 110.938593] BUG: KASAN: use-after-free in vma_interval_tree_compute_subtree_last+0x5f/0xcc at addr ffff8800087f4f20
[ 110.941666] Read of size 8 by task udevd/440
[ 110.956256] CPU: 0 PID: 440 Comm: udevd Not tainted 4.7.0-05999-g80a9201 #1
[ 110.958363] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 110.961354] 0000000000000000 ffff880008bbf680 ffffffff81c91ab5 ffff880008bbf6f8
[ 110.964325] ffffffff8133576b ffffffff812f6c1b 0000000000000246 000000010013000b
[ 110.967282] 0000000000000246 0000000000000000 ffff880008bbf7e0 ffffffff812ff9dc
[ 110.970325] Call Trace:
[ 110.971562] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 110.973253] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 110.975079] [<ffffffff812f6c1b>] ? vma_interval_tree_compute_subtree_last+0x5f/0xcc
[ 110.977922] [<ffffffff812ff9dc>] ? unmap_page_range+0x4f5/0x949
[ 110.979838] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 110.981848] [<ffffffff812f6c1b>] vma_interval_tree_compute_subtree_last+0x5f/0xcc
[ 110.984734] [<ffffffff812f6cb1>] vma_interval_tree_augment_propagate+0x29/0x75
[ 110.987552] [<ffffffff812f78b3>] vma_interval_tree_remove+0x5e2/0x608
[ 110.989359] [<ffffffff81307c85>] __remove_shared_vm_struct+0x7b/0x82
[ 110.991151] [<ffffffff81309084>] unlink_file_vma+0x82/0x93
[ 110.992789] [<ffffffff812fe80c>] free_pgtables+0xf0/0x13e
[ 110.994416] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 110.995989] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 110.997715] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 110.999554] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 111.001251] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 111.002907] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 111.004747] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 111.006622] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 111.008547] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 111.010493] [<ffffffff813e11b4>] load_script+0x4b8/0x506
[ 111.012285] [<ffffffff813e0cfc>] ? compat_SyS_ioctl+0x184d/0x184d
[ 111.043190] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 111.044879] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 111.046565] [<ffffffff81351535>] ? copy_strings+0x467/0x52d
[ 111.061417] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 111.063414] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 111.065464] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 111.067347] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 111.069035] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 111.070721] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 111.072417] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 111.073977] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 111.088763] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 111.090635] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 111.092428] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 111.094213] Object at ffff8800087f4eb0, in cache vm_area_struct
[ 111.095899] Object allocated with size 184 bytes.
[ 111.097396] Allocation:
[ 111.098505] PID = 307
[ 111.099587] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 111.108858] [<ffffffff81334733>] save_stack+0x46/0xce
[ 111.110727] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 111.112645] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 111.114589] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 111.116633] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 111.118546] [<ffffffff811a9b50>] copy_process+0x2323/0x424c
[ 111.134489] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 111.136389] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 111.138219] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 111.140170] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 111.142225] Memory state around the buggy address:
[ 111.143913] ffff8800087f4e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-111:20160812160248:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

Starting udev
[ 112.488293] power_supply test_ac: uevent
** 127 printk messages dropped ** [ 112.617229] [<ffffffff811aa2f2>] copy_process+0x2ac5/0x424c
[ 112.617233] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 112.617236] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 112.617239] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
** 222 printk messages dropped ** [ 112.617893] [<ffffffff811ade96>] ? task_stopped_code+0xcb/0xcb
** 1244 printk messages dropped **
dmesg-yocto-ivb41-115:20160812160246:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 112.596067] =============================================================================
[ 112.598922] BUG names_cache (Not tainted): Poison overwritten
[ 112.600657] -----------------------------------------------------------------------------
[ 112.600657] [ 112.618436] Disabling lock debugging due to kernel taint
[ 112.620090] INFO: 0xffff880009bea3cc-0xffff880009bea3cf. First byte 0x6e instead of 0x6b
[ 112.622909] INFO: Allocated in getname_flags+0x5a/0x35c age=71 cpu=0 pid=285
[ 112.657427] INFO: Freed in qlist_free_all+0x33/0xac age=1 cpu=0 pid=452
[ 112.705095] INFO: Slab 0xffffea000026fa00 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 112.708087] INFO: Object 0xffff880009bea3c0 @offset=9152 fp=0x (null)
[ 112.708087] [ 112.724701] Redzone ffff880009bea380: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 112.756566] Redzone ffff880009bea390: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 112.759561] Redzone ffff880009bea3a0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 112.775649] Redzone ffff880009bea3b0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 112.778746] Object ffff880009bea3c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6e 01 40 d5 kkkkkkkkkkkkn.@.
[ 112.781743] Object ffff880009bea3d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 112.784844] Object ffff880009bea3e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-122:20160812160234:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 103.749230] power_supply test_battery: prop MANUFACTURER=Linux
[ 104.141979] power_supply test_battery: prop SERIAL_NUMBER=4.7.0-05999-g80a9201
[ 104.484013] =============================================================================
[ 104.484018] BUG names_cache (Not tainted): Poison overwritten
[ 104.484019] -----------------------------------------------------------------------------
[ 104.484019] [ 104.484020] Disabling lock debugging due to kernel taint
[ 104.484023] INFO: 0xffff880007f3474d-0xffff880007f3474f. First byte 0x1 instead of 0x6b
[ 104.484032] INFO: Allocated in getname_flags+0x5a/0x35c age=155 cpu=0 pid=529
[ 104.484064] INFO: Freed in qlist_free_all+0x33/0xac age=16 cpu=0 pid=592
[ 104.484104] INFO: Slab 0xffffea00001fcc00 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 104.484106] INFO: Object 0xffff880007f34740 @offset=18240 fp=0x (null)
[ 104.484106] [ 104.484111] Redzone ffff880007f34700: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.484114] Redzone ffff880007f34710: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.484117] Redzone ffff880007f34720: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.484120] Redzone ffff880007f34730: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 104.484122] Object ffff880007f34740: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 60 f7 kkkkkkkkkkkkk.`.
[ 104.484125] Object ffff880007f34750: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 104.484128] Object ffff880007f34760: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-132:20160812160253:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 112.029713] ==================================================================
[ 112.032515] BUG: KASAN: use-after-free in __rb_insert_augmented+0x343/0x59f at addr ffff8800090af768
[ 112.035635] Read of size 8 by task mount.sh/466
[ 112.037302] CPU: 0 PID: 466 Comm: mount.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 112.039950] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 112.043015] 0000000000000000 ffff88000806fb58 ffffffff81c91ab5 ffff88000806fbd0
[ 112.046337] ffffffff8133576b ffffffff81c9eeac 0000000000000246 ffff8800081d5b88
[ 112.049624] ffff88000806fbc0 ffffffff81334d14 024000c0081d44e8 0000000000000001
[ 112.055593] Call Trace:
[ 112.056850] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 112.061900] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 112.063705] [<ffffffff81c9eeac>] ? __rb_insert_augmented+0x343/0x59f
[ 112.065686] [<ffffffff81334d14>] ? kasan_kmalloc+0xb7/0xc6
[ 112.072750] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 112.074793] [<ffffffff81c9eeac>] __rb_insert_augmented+0x343/0x59f
[ 112.076784] [<ffffffff812f6cfd>] ? vma_interval_tree_augment_propagate+0x75/0x75
[ 112.079403] [<ffffffff812f7c25>] vma_interval_tree_insert_after+0x1b6/0x1c3
[ 112.081516] [<ffffffff811a9e51>] copy_process+0x2624/0x424c
[ 112.083461] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 112.085280] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 112.087025] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 112.088807] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 112.090562] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 112.092348] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 112.094270] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 112.096169] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 112.098134] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 112.099854] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 112.101750] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 112.103686] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 112.105501] Object at ffff8800090af710, in cache vm_area_struct
[ 112.107338] Object allocated with size 184 bytes.
[ 112.110479] Allocation:
[ 112.111710] PID = 458
[ 112.112890] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 112.114854] [<ffffffff81334733>] save_stack+0x46/0xce
[ 112.116744] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 112.118671] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 112.122769] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 112.124716] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 112.143510] [<ffffffff811a9b50>] copy_process+0x2323/0x424c
[ 112.145784] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 112.147724] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 112.149579] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 112.151508] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 112.153543] Memory state around the buggy address:
[ 112.155232] ffff8800090af600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-133:20160812160230:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 106.248948] ==================================================================
[ 106.251786] BUG: KASAN: use-after-free in get_page_from_freelist+0x49/0xb73 at addr ffff88000840fa40
[ 106.272766] Read of size 8 by task expr/528
[ 106.274336] page:ffffea00002103c0 count:0 mapcount:0 mapping: (null) index:0x0
[ 106.277274] flags: 0x4000000000000000()
[ 106.278619] page dumped because: kasan: bad access detected
[ 106.280250] CPU: 0 PID: 528 Comm: expr Not tainted 4.7.0-05999-g80a9201 #1
[ 106.282090] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 106.284933] 0000000000000000 ffff88000840f778 ffffffff81c91ab5 ffff88000840f7f0
[ 106.301199] ffffffff8133585b ffffffff812c89be 0000000000000246 0000000000000001
[ 106.304352] ffffffff83e63818 0000000000000000 ffffea00000fbc60 0000000000000000
[ 106.307318] Call Trace:
[ 106.308442] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 106.310001] [<ffffffff8133585b>] kasan_report+0x409/0x553
[ 106.324707] [<ffffffff812c89be>] ? get_page_from_freelist+0x49/0xb73
[ 106.326679] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 106.328639] [<ffffffff812c89be>] get_page_from_freelist+0x49/0xb73
[ 106.330529] [<ffffffff812c7e42>] ? __rmqueue+0x7f/0x32f
[ 106.332117] [<ffffffff812ca07d>] __alloc_pages_nodemask+0x2b8/0x1199
[ 106.333907] [<ffffffff812c91dd>] ? get_page_from_freelist+0x868/0xb73
[ 106.335699] [<ffffffff812c9dc5>] ? gfp_pfmemalloc_allowed+0x11/0x11
[ 106.350531] [<ffffffff8133499c>] ? kasan_alloc_pages+0x39/0x3b

dmesg-yocto-ivb41-135:20160812160229:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 105.892255] =============================================================================
[ 105.901019] BUG kmalloc-128 (Not tainted): Poison overwritten
[ 105.902922] -----------------------------------------------------------------------------
[ 105.902922] [ 105.906433] Disabling lock debugging due to kernel taint
[ 105.914324] INFO: 0xffff88000845f5b4-0xffff88000845f5b7. First byte 0x6d instead of 0x6b
[ 105.919465] INFO: Allocated in kzalloc+0xe/0x10 age=148 cpu=0 pid=268
[ 105.962987] INFO: Freed in qlist_free_all+0x33/0xac age=97 cpu=0 pid=470
[ 106.001540] INFO: Slab 0xffffea00002117c0 objects=8 used=8 fp=0x (null) flags=0x4000000000000080
[ 106.012655] INFO: Object 0xffff88000845f5a8 @offset=1448 fp=0xffff88000845f008
[ 106.012655] [ 106.016241] Redzone ffff88000845f5a0: bb bb bb bb bb bb bb bb ........
[ 106.055850] Object ffff88000845f5a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6d 01 60 e2 kkkkkkkkkkkkm.`.
[ 106.058718] Object ffff88000845f5b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 106.070047] Object ffff88000845f5c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-13:20160812160250:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 107.789093] power_supply test_ac: uevent
[ 107.879899] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 108.143440] =============================================================================
[ 108.143454] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 108.143456] -----------------------------------------------------------------------------
[ 108.143456] [ 108.143460] Disabling lock debugging due to kernel taint
[ 108.143465] INFO: 0xffff8800081d5054-0xffff8800081d5057. First byte 0x6c instead of 0x6b
[ 108.143524] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=80 cpu=0 pid=297
[ 108.143620] INFO: Freed in qlist_free_all+0x33/0xac age=23 cpu=0 pid=394
[ 108.143673] INFO: Slab 0xffffea0000207500 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 108.143675] INFO: Object 0xffff8800081d5048 @offset=4168 fp=0xffff8800081d56c8
[ 108.143675] [ 108.143680] Redzone ffff8800081d5040: bb bb bb bb bb bb bb bb ........
[ 108.143683] Object ffff8800081d5048: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 a0 88 kkkkkkkkkkkkl...
[ 108.143685] Object ffff8800081d5058: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 108.143688] Object ffff8800081d5068: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 108.143691] Object ffff8800081d5078: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 108.143693] Redzone ffff8800081d5088: bb bb bb bb bb bb bb bb ........
[ 108.143696] Padding ffff8800081d51d4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 108.143712] CPU: 0 PID: 385 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 108.143714] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 108.143734] 0000000000000000 ffff880009b2f9d8 ffffffff81c91ab5 ffff880009b2fa08
[ 108.143738] ffffffff81330f07 ffff8800081d5054 000000000000006b ffff88000c4131c0
[ 108.143742] ffff8800081d5057 ffff880009b2fa58 ffffffff81330fac ffffffff83592f26
[ 108.143743] Call Trace:
[ 108.143771] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 108.143775] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 108.143779] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 108.143782] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 108.143785] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 108.143789] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 108.143793] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 108.143802] [<ffffffff812f6e90>] ? __anon_vma_interval_tree_compute_subtree_last+0x31/0xec
[ 108.143805] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 108.143809] [<ffffffff812f7027>] ? __anon_vma_interval_tree_augment_rotate+0x67/0x74
[ 108.143817] [<ffffffff81c9f0f9>] ? __rb_insert_augmented+0x590/0x59f
[ 108.143820] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 108.143824] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 108.143828] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 108.143831] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 108.143834] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 108.143837] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 108.143846] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 108.143850] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 108.143859] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 108.143870] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 108.143874] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 108.143878] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 108.143882] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 108.143897] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 108.143901] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 108.143904] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 108.143907] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 108.143918] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 108.143922] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 108.143925] FIX anon_vma_chain: Restoring 0xffff8800081d5054-0xffff8800081d5057=0x6b
[ 108.143925] [ 108.143927] FIX anon_vma_chain: Marking all objects used
[ 109.387815] =============================================================================
[ 109.387821] BUG anon_vma_chain (Tainted: G B ): Poison overwritten
[ 109.387822] -----------------------------------------------------------------------------
[ 109.387822] [ 109.387825] INFO: 0xffff8800083a1534-0xffff8800083a1537. First byte 0x6c instead of 0x6b
[ 109.387834] INFO: Allocated in anon_vma_fork+0xfa/0x3f9 age=225 cpu=0 pid=475
[ 109.387869] INFO: Freed in qlist_free_all+0x33/0xac age=76 cpu=0 pid=499
[ 109.400946] INFO: Slab 0xffffea000020e800 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 109.400949] INFO: Object 0xffff8800083a1528 @offset=5416 fp=0xffff8800083a0008
[ 109.400949] [ 109.400953] Redzone ffff8800083a1520: bb bb bb bb bb bb bb bb ........
[ 109.400956] Object ffff8800083a1528: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 00 8a kkkkkkkkkkkkl...
[ 109.400958] Object ffff8800083a1538: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 109.400961] Object ffff8800083a1548: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 109.400964] Object ffff8800083a1558: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 109.400966] Redzone ffff8800083a1568: bb bb bb bb bb bb bb bb ........
[ 109.400969] Padding ffff8800083a16b4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 109.400975] CPU: 0 PID: 377 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 109.400977] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 109.400984] 0000000000000000 ffff8800082bf9d8 ffffffff81c91ab5 ffff8800082bfa08
[ 109.400987] ffffffff81330f07 ffff8800083a1534 000000000000006b ffff88000c4131c0
[ 109.400990] ffff8800083a1537 ffff8800082bfa58 ffffffff81330fac ffffffff83592f26
[ 109.400991] Call Trace:
[ 109.401001] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 109.401020] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 109.401025] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 109.401029] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 109.401033] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 109.401036] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 109.401041] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 109.401044] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 109.401055] [<ffffffff81ccf700>] ? debug_smp_processor_id+0x17/0x19
[ 109.401059] [<ffffffff8133006c>] ? set_track+0xad/0xef
[ 109.401062] [<ffffffff81330693>] ? init_object+0x6f/0x76
[ 109.401065] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 109.401070] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 109.401073] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 109.401076] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 109.401078] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 109.401080] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 109.401085] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 109.401088] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 109.401091] [<ffffffff813345bf>] ? kasan_poison_slab_free+0x28/0x2a
[ 109.401095] [<ffffffff81334c54>] ? kasan_slab_free+0xa4/0xad
[ 109.401099] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 109.401102] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 109.401108] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 109.401113] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 109.401116] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 109.401119] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 109.401122] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 109.401125] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 109.401129] FIX anon_vma_chain: Restoring 0xffff8800083a1534-0xffff8800083a1537=0x6b
[ 109.401129] [ 109.401131] FIX anon_vma_chain: Marking all objects used
[ 109.696571] =============================================================================
[ 109.696585] BUG kmalloc-128 (Tainted: G B ): Poison overwritten
[ 109.696586] -----------------------------------------------------------------------------
[ 109.696586] [ 109.696589] INFO: 0xffff880007a353d4-0xffff880007a353d7. First byte 0x6d instead of 0x6b
[ 109.696616] INFO: Allocated in kernfs_fop_open+0x24e/0x840 age=114 cpu=0 pid=268
[ 109.696659] INFO: Freed in qlist_free_all+0x33/0xac age=9 cpu=0 pid=556
[ 109.696712] INFO: Slab 0xffffea00001e8d40 objects=8 used=8 fp=0x (null) flags=0x4000000000000080
[ 109.696714] INFO: Object 0xffff880007a353c8 @offset=968 fp=0xffff880007a35968
[ 109.696714] [ 109.696719] Redzone ffff880007a353c0: bb bb bb bb bb bb bb bb ........
[ 109.696726] Object ffff880007a353c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6d 01 60 e2 kkkkkkkkkkkkm.`.
[ 109.696730] Object ffff880007a353d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 109.696732] Object ffff880007a353e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-140:20160812160234:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 99.025341] ==================================================================
[ 99.029234] BUG: KASAN: use-after-free in __rb_erase_color+0x39c/0x750 at addr ffff880008503548
[ 99.032221] Read of size 8 by task udevd/441
[ 99.033747] CPU: 0 PID: 441 Comm: udevd Not tainted 4.7.0-05999-g80a9201 #1
[ 99.035882] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 99.039123] 0000000000000000 ffff8800098a7680 ffffffff81c91ab5 ffff8800098a76f8
[ 99.042648] ffffffff8133576b ffffffff81c9d5e0 0000000000000246 ffff8800087fb6c8
[ 99.046157] ffff8800087fb6c8 ffff8800098a76d8 ffffffff812f6e90 ffff8800087fb6e8
[ 99.049462] Call Trace:
[ 99.050651] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 99.052412] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 99.054182] [<ffffffff81c9d5e0>] ? __rb_erase_color+0x39c/0x750
[ 99.056060] [<ffffffff812f6e90>] ? __anon_vma_interval_tree_compute_subtree_last+0x31/0xec
[ 99.059638] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 99.062541] [<ffffffff81c9d5e0>] __rb_erase_color+0x39c/0x750
[ 99.064497] [<ffffffff812f6fc0>] ? __anon_vma_interval_tree_augment_propagate+0x75/0x75
[ 99.067659] [<ffffffff812f8400>] anon_vma_interval_tree_remove+0x5f9/0x608
[ 99.084915] [<ffffffff81332d11>] ? kmem_cache_free+0x4b/0xbc
[ 99.088206] [<ffffffff8131573e>] unlink_anon_vmas+0xe4/0x3cd
[ 99.092209] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 99.096645] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 99.101090] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 99.103404] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 99.107695] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 99.111594] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 99.114877] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 99.119251] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 99.121693] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 99.126625] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 99.130151] [<ffffffff813e11b4>] load_script+0x4b8/0x506
[ 99.134540] [<ffffffff813e0cfc>] ? compat_SyS_ioctl+0x184d/0x184d
[ 99.138134] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 99.178921] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 99.181706] [<ffffffff81351535>] ? copy_strings+0x467/0x52d
[ 99.185112] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 99.187117] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 99.189272] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 99.191293] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 99.193225] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 99.195226] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 99.197383] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 99.199357] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 99.201253] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 99.203163] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 99.205052] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 99.207171] Object at ffff880008503528, in cache anon_vma_chain
[ 99.209207] Object allocated with size 64 bytes.
[ 99.210957] Allocation:
[ 99.212242] PID = 346
[ 99.213542] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 99.215575] [<ffffffff81334733>] save_stack+0x46/0xce
[ 99.217407] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 99.219304] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 99.221219] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 99.223271] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 99.225461] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 99.231484] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 99.233584] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 99.235765] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 99.239723] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 99.243423] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 99.245166] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 99.247008] Memory state around the buggy address:
[ 99.248530] ffff880008503400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-141:20160812160252:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 112.521858] power_supply test_battery: prop CHARGE_FULL=100
[ 112.523800] power_supply test_battery: prop CHARGE_NOW=50
** 417 printk messages dropped ** [ 112.555457] [<ffffffff811a71bd>] __mmput+0x58/0x181
** 1037 printk messages dropped ** [ 112.560606] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 112.560609] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 112.560612] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 112.560616] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 112.560620] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 112.560623] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 112.560626] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 112.560630] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 112.560634] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 112.560636] Object at ffff880008284b68, in cache anon_vma_chain
[ 112.560637] Object allocated with size 64 bytes.
[ 112.560637] Allocation:
[ 112.560638] PID = 324
[ 112.560643] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 112.560647] [<ffffffff81334733>] save_stack+0x46/0xce
[ 112.560650] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 112.560654] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 112.560658] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 112.560662] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 112.560665] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 112.560674] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 112.560679] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 112.560683] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 112.560687] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 112.560690] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 112.560694] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 112.560695] Memory state around the buggy address:
[ 112.560698] ffff880008284a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-25:20160812160245:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 112.333339] blk_update_request: I/O error, dev fd0, sector 0
[ 112.333343] floppy: error -5 while reading block 0
[ 112.335668] =============================================================================
[ 112.335673] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 112.335674] -----------------------------------------------------------------------------
[ 112.335674] [ 112.335675] Disabling lock debugging due to kernel taint
[ 112.335678] INFO: 0xffff880007ba3a14-0xffff880007ba3a17. First byte 0x6c instead of 0x6b
[ 112.335686] INFO: Allocated in anon_vma_fork+0xfa/0x3f9 age=254 cpu=0 pid=621
[ 112.335720] INFO: Freed in qlist_free_all+0x33/0xac age=78 cpu=0 pid=681
[ 112.335764] INFO: Slab 0xffffea00001ee880 objects=19 used=0 fp=0xffff880007ba3388 flags=0x4000000000004080
[ 112.335767] INFO: Object 0xffff880007ba3a08 @offset=6664 fp=0xffff880007ba2348
[ 112.335767] [ 112.335771] Redzone ffff880007ba3a00: bb bb bb bb bb bb bb bb ........
[ 112.335774] Object ffff880007ba3a08: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 20 87 kkkkkkkkkkkkl. .
[ 112.335777] Object ffff880007ba3a18: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 112.335780] Object ffff880007ba3a28: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 112.335782] Object ffff880007ba3a38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 112.335785] Redzone ffff880007ba3a48: bb bb bb bb bb bb bb bb ........
[ 112.335788] Padding ffff880007ba3b94: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 112.335793] CPU: 0 PID: 268 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 112.335794] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 112.335800] 0000000000000000 ffff880008f87508 ffffffff81c91ab5 ffff880008f87538
[ 112.335804] ffffffff81330f07 ffff880007ba3a14 000000000000006b ffff88000c4131c0
[ 112.335808] ffff880007ba3a17 ffff880008f87588 ffffffff81330fac ffffffff83592f26
[ 112.335809] Call Trace:
[ 112.335814] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 112.335817] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 112.335821] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 112.335824] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 112.335827] [<ffffffff81331b46>] __free_slab+0x12d/0x14d
[ 112.335831] [<ffffffff81331ba1>] discard_slab+0x3b/0x3d
[ 112.335834] [<ffffffff81332a9c>] __slab_free+0x268/0x27d
[ 112.335837] [<ffffffff81332cc3>] ___cache_free+0x69/0x6c
[ 112.335840] [<ffffffff81332cc3>] ? ___cache_free+0x69/0x6c
[ 112.335844] [<ffffffff81335bf5>] qlist_free_all+0x75/0xac
[ 112.335847] [<ffffffff81335f69>] quarantine_reduce+0x136/0x13d
[ 112.335851] [<ffffffff81334c85>] kasan_kmalloc+0x28/0xc6
[ 112.335854] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 112.335857] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 112.335860] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 112.335863] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 112.335866] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 112.335870] [<ffffffff81303aa0>] handle_mm_fault+0x683/0x11bb
[ 112.335873] [<ffffffff8133495c>] ? memcpy+0x45/0x4c
[ 112.335876] [<ffffffff8130341d>] ? apply_to_page_range+0x2fb/0x2fb
[ 112.335880] [<ffffffff81ca8d58>] ? num_to_str+0x198/0x198
[ 112.335884] [<ffffffff81332213>] ? ___slab_alloc+0x284/0x31e
[ 112.335887] [<ffffffff813348c4>] ? memset+0x31/0x38
[ 112.335890] [<ffffffff8130b86e>] ? find_vma+0xe1/0xef
[ 112.335894] [<ffffffff8111cf2b>] __do_page_fault+0x33e/0x624
[ 112.335898] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 112.335901] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 112.335905] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 112.335909] [<ffffffff81cac165>] ? copy_user_enhanced_fast_string+0x5/0x10
[ 112.335912] [<ffffffff8138d32a>] ? seq_read+0xb1b/0xced
[ 112.335916] [<ffffffff8138c80f>] ? seq_open+0x162/0x162
[ 112.335919] [<ffffffff8130ac2e>] ? vma_set_page_prot+0x7d/0xcd
[ 112.335923] [<ffffffff8130ea36>] ? mmap_region+0x818/0xa41
[ 112.335928] [<ffffffff814255e9>] kernfs_fop_read+0xcc/0x3ab
[ 112.335931] [<ffffffff8130e21e>] ? SyS_munmap+0x81/0x81
[ 112.335935] [<ffffffff8134702f>] __vfs_read+0xf6/0x279
[ 112.335939] [<ffffffff81346f39>] ? do_sendfile+0x57d/0x57d
[ 112.335942] [<ffffffff8130b76b>] ? get_unmapped_area+0x24b/0x26d
[ 112.335946] [<ffffffff8130f24e>] ? do_mmap+0x5ef/0x66a
[ 112.335949] [<ffffffff8137fb67>] ? __fget_light+0x80/0xe3
[ 112.335953] [<ffffffff813472a3>] vfs_read+0xf1/0x177
[ 112.335956] [<ffffffff8134799c>] SyS_read+0xce/0x138
[ 112.335960] [<ffffffff813478ce>] ? vfs_write+0x187/0x187
[ 112.335963] [<ffffffff8130a8ff>] ? SyS_mmap_pgoff+0xee/0x119

dmesg-yocto-ivb41-27:20160812160241:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 112.251266] (mount,616,0):ocfs2_fill_super:1218 ERROR: status = -22
[ 112.251726] gfs2: gfs2 mount does not exist
[ 112.361473] ==================================================================
[ 112.361484] BUG: KASAN: use-after-free in unlink_anon_vmas+0x63/0x3cd at addr ffff880008fe3a18
[ 112.361487] Read of size 8 by task network.sh/644
[ 112.361492] CPU: 0 PID: 644 Comm: network.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 112.361494] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 112.361500] 0000000000000000 ffff8800075c7b70 ffffffff81c91ab5 ffff8800075c7be8
[ 112.361504] ffffffff8133576b ffffffff813156bd 0000000000000246 ffff880007f5ddb0
[ 112.361507] ffff880007f5ddb0 ffff88000c0e15e0 ffff8800075c7bf8 ffffffff812f78b3
[ 112.361508] Call Trace:
[ 112.361514] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 112.361520] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 112.361523] [<ffffffff813156bd>] ? unlink_anon_vmas+0x63/0x3cd
[ 112.361528] [<ffffffff812f78b3>] ? vma_interval_tree_remove+0x5e2/0x608
[ 112.361532] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 112.361535] [<ffffffff813156bd>] unlink_anon_vmas+0x63/0x3cd
[ 112.361538] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 112.361542] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 112.361545] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 112.361550] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 112.361554] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 112.361557] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 112.361561] [<ffffffff811b1a0f>] do_exit+0x94f/0x19e0
[ 112.361565] [<ffffffff811b10c0>] ? is_current_pgrp_orphaned+0x96/0x96
[ 112.361570] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 112.361574] [<ffffffff811b2bc7>] do_group_exit+0xe8/0x227
[ 112.361578] [<ffffffff811b2d1e>] SyS_exit_group+0x18/0x18
[ 112.361582] [<ffffffff82c80673>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[ 112.361584] Object at ffff880008fe3a08, in cache anon_vma_chain
[ 112.361585] Object allocated with size 64 bytes.
[ 112.361586] Allocation:
[ 112.361587] PID = 631
[ 112.361593] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 112.361597] [<ffffffff81334733>] save_stack+0x46/0xce
[ 112.361601] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 112.361604] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 112.361608] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 112.361612] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 112.361615] [<ffffffff81315e96>] anon_vma_fork+0xfa/0x3f9
[ 112.361627] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 112.361631] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 112.361635] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 112.361639] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 112.361642] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 112.361643] Memory state around the buggy address:
[ 112.361647] ffff880008fe3900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-39:20160812160255:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 110.770817] =============================================================================
[ 110.774948] BUG vm_area_struct (Not tainted): Poison overwritten
[ 110.776817] -----------------------------------------------------------------------------
[ 110.776817] [ 110.780810] Disabling lock debugging due to kernel taint
[ 110.782629] INFO: 0xffff880009b1fd64-0xffff880009b1fd67. First byte 0x6c instead of 0x6b
[ 110.785756] INFO: Allocated in copy_process+0x2323/0x424c age=32 cpu=0 pid=298
[ 110.805227] INFO: Freed in qlist_free_all+0x33/0xac age=2 cpu=0 pid=275
[ 110.826923] INFO: Slab 0xffffea000026c780 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 110.830290] INFO: Object 0xffff880009b1fd58 @offset=7512 fp=0xffff880009b1eeb0
[ 110.830290] [ 110.834146] Redzone ffff880009b1fd50: bb bb bb bb bb bb bb bb ........
[ 110.838695] Object ffff880009b1fd58: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 40 8b kkkkkkkkkkkkl.@.
[ 110.841959] Object ffff880009b1fd68: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 110.852019] Object ffff880009b1fd78: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-40:20160812160237:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

** 125 printk messages dropped ** [ 104.030368] 0000000000000000 ffff8800082e7a78 ffffffff81c91ab5 ffff8800082e7af0
** 261 printk messages dropped ** [ 104.031083] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 104.031086] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 104.031089] [<ffffffff811b1a0f>] do_exit+0x94f/0x19e0
[ 104.031093] [<ffffffff811b10c0>] ? is_current_pgrp_orphaned+0x96/0x96
[ 104.031096] [<ffffffff813450ad>] ? fdput_pos+0x22/0x26
[ 104.031100] [<ffffffff81347b11>] ? SyS_write+0x10b/0x138
[ 104.031103] [<ffffffff811b2bc7>] do_group_exit+0xe8/0x227
[ 104.031107] [<ffffffff811b2d1e>] SyS_exit_group+0x18/0x18
[ 104.031110] [<ffffffff82c80673>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[ 104.031111] Memory state around the buggy address:

dmesg-yocto-ivb41-41:20160812160252:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 110.992029] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 110.992055] power_supply test_ac: prop ONLINE=1
[ 111.045537] =============================================================================
[ 111.045548] BUG vm_area_struct (Not tainted): Poison overwritten
[ 111.045550] -----------------------------------------------------------------------------
[ 111.045550] [ 111.045551] Disabling lock debugging due to kernel taint
[ 111.045555] INFO: 0xffff880008b66ca4-0xffff880008b66ca7. First byte 0x6c instead of 0x6b
[ 111.045628] INFO: Allocated in copy_process+0x2323/0x424c age=170 cpu=0 pid=511
[ 111.045723] INFO: Freed in qlist_free_all+0x33/0xac age=44 cpu=0 pid=644
[ 111.045784] INFO: Slab 0xffffea000022d980 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 111.045786] INFO: Object 0xffff880008b66c98 @offset=3224 fp=0xffff880008b66438
[ 111.045786] [ 111.045791] Redzone ffff880008b66c90: bb bb bb bb bb bb bb bb ........
[ 111.045793] Object ffff880008b66c98: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 40 8b kkkkkkkkkkkkl.@.
[ 111.045796] Object ffff880008b66ca8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 111.045799] Object ffff880008b66cb8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-46:20160812160250:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 112.503276] power_supply test_battery: prop TIME_TO_FULL_NOW=3600
[ 112.505277] power_supply test_battery: prop MODEL_NAME=Test battery
[ 112.673774] =============================================================================
[ 112.673787] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 112.673788] -----------------------------------------------------------------------------
[ 112.673788] [ 112.673789] Disabling lock debugging due to kernel taint
[ 112.673793] INFO: 0xffff880009a27bb5-0xffff880009a27bb7. First byte 0x1 instead of 0x6b
[ 112.673850] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=155 cpu=0 pid=462
[ 112.673944] INFO: Freed in qlist_free_all+0x33/0xac age=83 cpu=0 pid=581
[ 112.674006] INFO: Slab 0xffffea0000268980 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 112.674008] INFO: Object 0xffff880009a27ba8 @offset=7080 fp=0x (null)
[ 112.674008] [ 112.674013] Redzone ffff880009a27ba0: bb bb bb bb bb bb bb bb ........
[ 112.674016] Object ffff880009a27ba8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 20 db kkkkkkkkkkkkk. .
[ 112.674019] Object ffff880009a27bb8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 112.674022] Object ffff880009a27bc8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 112.674024] Object ffff880009a27bd8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 112.674027] Redzone ffff880009a27be8: bb bb bb bb bb bb bb bb ........
[ 112.674034] Padding ffff880009a27d34: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 112.674048] CPU: 0 PID: 509 Comm: network.sh Tainted: G B 4.7.0-05999-g80a9201 #1
[ 112.674050] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 112.674069] 0000000000000000 ffff880007857af8 ffffffff81c91ab5 ffff880007857b28
[ 112.674073] ffffffff81330f07 ffff880009a27bb5 000000000000006b ffff88000c4131c0
[ 112.674077] ffff880009a27bb7 ffff880007857b78 ffffffff81330fac ffffffff83592f26
[ 112.674078] Call Trace:
[ 112.674105] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 112.674110] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 112.674113] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 112.674117] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 112.674120] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 112.674124] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 112.674128] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 112.674131] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 112.674134] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 112.674138] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 112.674141] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 112.674144] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 112.674147] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 112.674151] [<ffffffff81303aa0>] handle_mm_fault+0x683/0x11bb
[ 112.674155] [<ffffffff8130341d>] ? apply_to_page_range+0x2fb/0x2fb
[ 112.674158] [<ffffffff8130f24e>] ? do_mmap+0x5ef/0x66a
[ 112.674162] [<ffffffff8130b86e>] ? find_vma+0xe1/0xef
[ 112.674174] [<ffffffff8111cf2b>] __do_page_fault+0x33e/0x624
[ 112.674178] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 112.674187] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 112.674191] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 112.674194] FIX anon_vma_chain: Restoring 0xffff880009a27bb5-0xffff880009a27bb7=0x6b
[ 112.674194] [ 112.674196] FIX anon_vma_chain: Marking all objects used
[ 112.811791] ==================================================================
[ 112.811809] BUG: KASAN: use-after-free in __rb_insert_augmented+0xaf/0x59f at addr ffff880007ab5988
[ 112.811812] Read of size 8 by task udevd/617
[ 112.811817] CPU: 0 PID: 617 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 112.811819] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 112.811825] 0000000000000000 ffff880007287b58 ffffffff81c91ab5 ffff880007287bd0
[ 112.811829] ffffffff8133576b ffffffff81c9ec18 0000000000000246 ffffffff81332213
[ 112.811833] ffff880007287c20 ffffffff81332213 ffffffff812f6bcd ffffffff81334595
[ 112.811833] Call Trace:
[ 112.811839] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 112.811845] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 112.811849] [<ffffffff81c9ec18>] ? __rb_insert_augmented+0xaf/0x59f
[ 112.811853] [<ffffffff81332213>] ? ___slab_alloc+0x284/0x31e
[ 112.811857] [<ffffffff81332213>] ? ___slab_alloc+0x284/0x31e
[ 112.811861] [<ffffffff812f6bcd>] ? vma_interval_tree_compute_subtree_last+0x11/0xcc
[ 112.811865] [<ffffffff81334595>] ? kasan_poison_shadow+0x2f/0x31
[ 112.811869] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 112.811871] [<ffffffff81c9ec18>] __rb_insert_augmented+0xaf/0x59f
[ 112.811875] [<ffffffff812f6cfd>] ? vma_interval_tree_augment_propagate+0x75/0x75
[ 112.811879] [<ffffffff812f7c25>] vma_interval_tree_insert_after+0x1b6/0x1c3
[ 112.811884] [<ffffffff811a9e51>] copy_process+0x2624/0x424c
[ 112.811888] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 112.811903] [<ffffffff81350326>] ? vfs_fstatat+0xa1/0xfd
[ 112.811906] [<ffffffff81350285>] ? SYSC_newfstat+0xa6/0xa6
[ 112.811910] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 112.811921] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 112.811927] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 112.811932] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 112.811935] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 112.811938] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 112.811942] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 112.811945] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 112.811948] Object at ffff880007ab5928, in cache vm_area_struct
[ 112.811949] Object allocated with size 184 bytes.
[ 112.811950] Allocation:
[ 112.811951] PID = 269
[ 112.811958] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 112.811961] [<ffffffff81334733>] save_stack+0x46/0xce
[ 112.811965] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 112.811968] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 112.811972] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 112.811975] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 112.811980] [<ffffffff811a9b50>] copy_process+0x2323/0x424c
[ 112.811983] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 112.811987] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 112.811990] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 112.811993] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 112.811994] Memory state around the buggy address:
[ 112.811998] ffff880007ab5880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-52:20160812160310:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 106.196555] ==================================================================
[ 106.199340] BUG: KASAN: use-after-free in find_vma+0x72/0xef at addr ffff880007c0cca0
[ 106.202126] Read of size 8 by task mount.sh/568
[ 106.203669] CPU: 0 PID: 568 Comm: mount.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 106.206351] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 106.209296] 0000000000000000 ffff88000805fde0 ffffffff81c91ab5 ffff88000805fe58
[ 106.212413] ffffffff8133576b ffffffff8130b7ff 0000000000000246 ffff880008150d40
[ 106.215519] 0000000800000000 0000000000000003 ffff880008ec3b40 0000000000000246
[ 106.218638] Call Trace:
[ 106.219821] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 106.221477] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 106.223167] [<ffffffff8130b7ff>] ? find_vma+0x72/0xef
[ 106.224995] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 106.226891] [<ffffffff8130b7ff>] find_vma+0x72/0xef
[ 106.228546] [<ffffffff8111ce9d>] __do_page_fault+0x2b0/0x624
[ 106.230290] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 106.231979] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 106.233762] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 106.235502] Object at ffff880007c0cc98, in cache vm_area_struct
[ 106.237272] Object allocated with size 184 bytes.
[ 106.238841] Allocation:
[ 106.240007] PID = 451
[ 106.241147] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 106.242997] [<ffffffff81334733>] save_stack+0x46/0xce
[ 106.244750] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 106.246537] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 106.248403] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 106.250302] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 106.252138] [<ffffffff811a9b50>] copy_process+0x2323/0x424c
[ 106.254113] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 106.255858] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 106.257584] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 106.269620] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 106.270857] Memory state around the buggy address:
[ 106.271833] ffff880007c0cb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-53:20160812160248:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 109.853372] ==================================================================
[ 109.857137] BUG: KASAN: use-after-free in copy_process+0x21b8/0x424c at addr ffff880008820270
[ 109.860224] Read of size 8 by task mount.sh/385
[ 109.861852] CPU: 0 PID: 385 Comm: mount.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 109.864512] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 109.881612] 0000000000000000 ffff8800089f7bf8 ffffffff81c91ab5 ffff8800089f7c70
[ 109.884787] ffffffff8133576b ffffffff811a99e5 0000000000000246 0000000000000000
[ 109.887916] 0000000000000000 ffff880008b6ad40 ffff88000ae9d730 ffff88000ae9d520
[ 109.891113] Call Trace:
[ 109.908384] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 109.910142] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 109.911918] [<ffffffff811a99e5>] ? copy_process+0x21b8/0x424c
[ 109.913940] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 109.915858] [<ffffffff811a99e5>] copy_process+0x21b8/0x424c
[ 109.917723] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 109.919516] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 109.921249] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 109.936095] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 109.937767] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 109.939571] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 109.941440] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 109.943324] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 109.945290] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 109.946990] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 109.961891] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 109.963636] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 109.965518] Object at ffff880008820220, in cache vm_area_struct
[ 109.967300] Object allocated with size 184 bytes.
[ 109.968873] Allocation:
[ 109.970107] PID = 385
[ 109.971315] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 109.973262] [<ffffffff81334733>] save_stack+0x46/0xce
[ 109.988168] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 110.019502] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 110.034516] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 110.036541] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 110.038499] [<ffffffff8130f85c>] __install_special_mapping+0x61/0x2a3
[ 110.040607] [<ffffffff8130faae>] _install_special_mapping+0x10/0x12
[ 110.042686] [<ffffffff81002d22>] map_vdso+0x105/0x16f
[ 110.044633] [<ffffffff81002e7b>] arch_setup_additional_pages+0x19/0x1e
[ 110.046659] [<ffffffff813e679d>] load_elf_binary+0x1b53/0x357c
[ 110.061624] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 110.063608] [<ffffffff813e11b4>] load_script+0x4b8/0x506
[ 110.065412] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 110.067489] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 110.069620] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 110.071452] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 110.073280] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 110.088200] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 110.090197] Memory state around the buggy address:
[ 110.091865] ffff880008820100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-61:20160812160220:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 96.984949] power_supply test_battery: prop TECHNOLOGY=Li-ion
[ 97.060941] =============================================================================
** 1583 printk messages dropped ** [ 97.599815] [<ffffffff812f7d0e>] anon_vma_interval_tree_insert+0xdc/0x1d5
[ 97.599817] [<ffffffff81315c32>] anon_vma_clone+0x20b/0x375
[ 97.599820] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 97.599824] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 97.599828] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 97.599832] [<ffffffff813345bf>] ? kasan_poison_slab_free+0x28/0x2a
[ 97.599835] [<ffffffff81334c54>] ? kasan_slab_free+0xa4/0xad
[ 97.599839] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 97.599842] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 97.599846] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 97.599849] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 97.599853] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 97.599855] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 97.599859] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 97.599862] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 97.599864] Object at ffff880007e036c8, in cache anon_vma_chain
[ 97.599865] Object allocated with size 64 bytes.
[ 97.599866] Allocation:
[ 97.599867] PID = 349
[ 97.599875] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 97.599879] [<ffffffff81334733>] save_stack+0x46/0xce
[ 97.599883] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 97.599886] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 97.599890] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 97.599893] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 97.599897] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 97.599900] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 97.599903] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 97.599907] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 97.599910] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 97.599914] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 97.599917] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 97.599918] Memory state around the buggy address:
[ 97.599921] ffff880007e03580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-ivb41-74:20160812160249:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 113.319464] =============================================================================
[ 113.326763] BUG vm_area_struct (Not tainted): Poison overwritten
[ 113.328648] -----------------------------------------------------------------------------
[ 113.328648] [ 113.340859] Disabling lock debugging due to kernel taint
[ 113.342639] INFO: 0xffff88000823822c-0xffff88000823822f. First byte 0x6c instead of 0x6b
[ 113.345668] INFO: Allocated in copy_process+0x2323/0x424c age=92 cpu=0 pid=513
[ 113.377733] INFO: Freed in qlist_free_all+0x33/0xac age=28 cpu=0 pid=395
[ 113.426982] INFO: Slab 0xffffea0000208e00 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 113.438537] INFO: Object 0xffff880008238220 @offset=544 fp=0xffff8800082394f8
[ 113.438537] [ 113.441619] Redzone ffff880008238218: bb bb bb bb bb bb bb bb ........
[ 113.452999] Object ffff880008238220: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 20 8c kkkkkkkkkkkkl. .
[ 113.489973] Object ffff880008238230: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 113.501486] Object ffff880008238240: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-78:20160812160240:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 114.438452] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 114.438477] power_supply test_ac: prop ONLINE=1
[ 114.452787] =============================================================================
[ 114.452791] BUG names_cache (Not tainted): Poison overwritten
[ 114.452792] -----------------------------------------------------------------------------
[ 114.452792] [ 114.452794] Disabling lock debugging due to kernel taint
[ 114.452797] INFO: 0xffff880008ea358c-0xffff880008ea358f. First byte 0x7e instead of 0x6b
[ 114.452806] INFO: Allocated in getname_flags+0x5a/0x35c age=74 cpu=0 pid=503
[ 114.452842] INFO: Freed in qlist_free_all+0x33/0xac age=7 cpu=0 pid=382
[ 114.452881] INFO: Slab 0xffffea000023a800 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 114.452883] INFO: Object 0xffff880008ea3580 @offset=13696 fp=0xffff880008ea23c0
[ 114.452883] [ 114.452887] Redzone ffff880008ea3540: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 114.452890] Redzone ffff880008ea3550: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 114.452893] Redzone ffff880008ea3560: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 114.452896] Redzone ffff880008ea3570: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 114.452899] Object ffff880008ea3580: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 80 88 kkkkkkkkkkkk~...
[ 114.452902] Object ffff880008ea3590: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 114.452905] Object ffff880008ea35a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-7:20160812160302:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 115.327567] floppy: error -5 while reading block 0
[ 115.599208] power_supply test_ac: uevent
[ 115.625389] =============================================================================
[ 115.625405] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 115.625411] -----------------------------------------------------------------------------
[ 115.625411] [ 115.625413] Disabling lock debugging due to kernel taint
[ 115.625416] INFO: 0xffff880008ac31f4-0xffff880008ac31f7. First byte 0x7e instead of 0x6b
[ 115.625483] INFO: Allocated in anon_vma_prepare+0x6b/0x2db age=94 cpu=0 pid=517
[ 115.625597] INFO: Freed in qlist_free_all+0x33/0xac age=9 cpu=0 pid=306
[ 115.625649] INFO: Slab 0xffffea000022b080 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 115.625651] INFO: Object 0xffff880008ac31e8 @offset=4584 fp=0x (null)
[ 115.625651] [ 115.625656] Redzone ffff880008ac31e0: bb bb bb bb bb bb bb bb ........
[ 115.625659] Object ffff880008ac31e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 80 bb kkkkkkkkkkkk~...
[ 115.625662] Object ffff880008ac31f8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 115.625664] Object ffff880008ac3208: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 115.625667] Object ffff880008ac3218: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 115.625669] Redzone ffff880008ac3228: bb bb bb bb bb bb bb bb ........
[ 115.625672] Padding ffff880008ac3374: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 115.625688] CPU: 0 PID: 305 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 115.625690] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 115.625712] 0000000000000000 ffff880008dc79d8 ffffffff81c91ab5 ffff880008dc7a08
[ 115.625715] ffffffff81330f07 ffff880008ac31f4 000000000000006b ffff88000c4131c0
[ 115.625719] ffff880008ac31f7 ffff880008dc7a58 ffffffff81330fac ffffffff83592f26
[ 115.625720] Call Trace:
[ 115.625753] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 115.625758] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 115.625762] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 115.625765] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 115.625768] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 115.625772] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 115.625775] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 115.625778] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 115.625787] [<ffffffff81ccf700>] ? debug_smp_processor_id+0x17/0x19
[ 115.625791] [<ffffffff8133006c>] ? set_track+0xad/0xef
[ 115.625794] [<ffffffff81330693>] ? init_object+0x6f/0x76
[ 115.625797] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 115.625801] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 115.625804] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 115.625808] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 115.625811] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 115.625814] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 115.625830] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 115.625835] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 115.625843] [<ffffffff81350326>] ? vfs_fstatat+0xa1/0xfd
[ 115.625848] [<ffffffff81350285>] ? SYSC_newfstat+0xa6/0xa6
[ 115.625851] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 115.625855] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 115.625858] [<ffffffff8134f46b>] ? cp_old_stat+0x40b/0x40b
[ 115.625862] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 115.625865] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 115.625878] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 115.625883] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 115.625886] FIX anon_vma_chain: Restoring 0xffff880008ac31f4-0xffff880008ac31f7=0x6b
[ 115.625886]
dmesg-yocto-ivb41-81:20160812160254:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 111.964236] =============================================================================
[ 111.967640] BUG kmalloc-512 (Not tainted): Poison overwritten
[ 111.969620] -----------------------------------------------------------------------------
[ 111.969620] [ 111.977896] Disabling lock debugging due to kernel taint
[ 111.983861] INFO: 0xffff880008ee9454-0xffff880008ee9457. First byte 0x6c instead of 0x6b
[ 111.987140] INFO: Allocated in load_elf_phdrs+0x9a/0xf4 age=104 cpu=0 pid=522
[ 112.030330] INFO: Freed in qlist_free_all+0x33/0xac age=36 cpu=0 pid=540
[ 112.128426] INFO: Slab 0xffffea000023ba00 objects=9 used=9 fp=0x (null) flags=0x4000000000004080
[ 112.131995] INFO: Object 0xffff880008ee9448 @offset=5192 fp=0x (null)
[ 112.131995] [ 112.135841] Redzone ffff880008ee9440: bb bb bb bb bb bb bb bb ........
[ 112.138987] Object ffff880008ee9448: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 00 a3 kkkkkkkkkkkkl...
[ 112.155009] Object ffff880008ee9458: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 112.158297] Object ffff880008ee9468: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-ivb41-94:20160812160301:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 113.979327] power_supply test_battery: prop CHARGE_FULL=100
[ 113.981097] power_supply test_battery: prop CHARGE_NOW=50
** 94972 printk messages dropped ** [ 115.011238] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
** 90 printk messages dropped ** [ 115.011513] [<ffffffff8133576b>] kasan_report+0x319/0x553
** 112 printk messages dropped ** [ 115.011876] ffff8800080a9080: fc fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb
** 129 printk messages dropped ** [ 115.012311] ffff8800080a9080: fc fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb
** 144 printk messages dropped ** [ 115.012751] [<ffffffff8133576b>] kasan_report+0x319/0x553
** 168 printk messages dropped ** [ 115.013289] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
** 183 printk messages dropped ** [ 115.013878] [<ffffffff82c80fe2>] retint_user+0x8/0x10
** 205 printk messages dropped ** [ 115.014522] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
** 219 printk messages dropped ** [ 115.025745] [<ffffffff812ff949>] unmap_page_range+0x462/0x949
** 243 printk messages dropped ** [ 115.026525] ==================================================================
** 259 printk messages dropped **
dmesg-yocto-ivb41-95:20160812160231:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 105.566563] power_supply test_battery: prop CHARGE_NOW=50
[ 105.623433] power_supply test_battery: prop CAPACITY=50
[ 105.628181] =============================================================================
[ 105.628184] BUG vm_area_struct (Not tainted): Poison overwritten
[ 105.628185] -----------------------------------------------------------------------------
[ 105.628185] [ 105.628186] Disabling lock debugging due to kernel taint
[ 105.628190] INFO: 0xffff88000805fd64-0xffff88000805fd67. First byte 0x7e instead of 0x6b
[ 105.628199] INFO: Allocated in copy_process+0x2323/0x424c age=139 cpu=0 pid=278
** 650 printk messages dropped ** [ 106.440612] ffffffff8133576b ffffffff8130763f 0000000000000246 fcfcfcfc0840a808
[ 106.440616] fcfcfcfcfcfcfcfc 66666620fcfcfcfc 3038303030383866 00203a3030613765
** 92236 printk messages dropped ** [ 107.342524] [<ffffffff811ac105>] SyS_clone+0x14/0x16
** 88 printk messages dropped ** [ 107.342776] [<ffffffff813001ac>] unmap_vmas+0xa7/0xc4
** 108 printk messages dropped ** [ 107.343092] Read of size 8 by task udevd/507
** 125 printk messages dropped **
dmesg-yocto-kbuild-10:20160812160326:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 151.982550] power_supply test_ac: uevent
[ 152.341030] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 152.414342] =============================================================================
[ 152.414347] BUG vm_area_struct (Not tainted): Poison overwritten
[ 152.414348] -----------------------------------------------------------------------------
[ 152.414348] [ 152.414350] Disabling lock debugging due to kernel taint
[ 152.414353] INFO: 0xffff88000b45d0d4-0xffff88000b45d0d7. First byte 0x7e instead of 0x6b
[ 152.414362] INFO: Allocated in copy_process+0x2323/0x424c age=115 cpu=0 pid=279
[ 152.414569] INFO: Freed in qlist_free_all+0x33/0xac age=24 cpu=0 pid=285
[ 152.414615] INFO: Slab 0xffffea00002d1700 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 152.414617] INFO: Object 0xffff88000b45d0c8 @offset=4296 fp=0xffff88000b45db40
[ 152.414617] [ 152.414621] Redzone ffff88000b45d0c0: bb bb bb bb bb bb bb bb ........
[ 152.414624] Object ffff88000b45d0c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 60 b1 kkkkkkkkkkkk~.`.
[ 152.414627] Object ffff88000b45d0d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 152.414630] Object ffff88000b45d0e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-11:20160812160327:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 152.387725] power_supply test_battery: POWER_SUPPLY_NAME=test_battery
[ 152.427546] ==================================================================
** 3609 printk messages dropped ** [ 152.463783] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 152.463787] [<ffffffff812f6bf1>] vma_interval_tree_compute_subtree_last+0x35/0xcc
[ 152.463791] [<ffffffff812f6cb1>] vma_interval_tree_augment_propagate+0x29/0x75
[ 152.463795] [<ffffffff812f78b3>] vma_interval_tree_remove+0x5e2/0x608
[ 152.463798] [<ffffffff81309a25>] vma_adjust+0x71e/0xaae
[ 152.463802] [<ffffffff81ccf700>] ? debug_smp_processor_id+0x17/0x19
[ 152.463805] [<ffffffff81309307>] ? vma_link+0xf7/0xf7
[ 152.463809] [<ffffffff81334595>] ? kasan_poison_shadow+0x2f/0x31

dmesg-yocto-kbuild-13:20160812160326:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 144.681428] power_supply test_battery: prop CAPACITY_LEVEL=Normal
[ 144.683430] power_supply test_battery: prop TIME_TO_EMPTY_AVG=3600
[ 144.905297] =============================================================================
[ 144.905306] BUG vm_area_struct (Not tainted): Poison overwritten
[ 144.905307] -----------------------------------------------------------------------------
[ 144.905307] [ 144.905308] Disabling lock debugging due to kernel taint
[ 144.905311] INFO: 0xffff88000986a22c-0xffff88000986a22f. First byte 0x7e instead of 0x6b
[ 144.905364] INFO: Allocated in __install_special_mapping+0x61/0x2a3 age=99 cpu=0 pid=505
[ 144.905476] INFO: Freed in qlist_free_all+0x33/0xac age=14 cpu=0 pid=538
[ 144.905514] INFO: Slab 0xffffea0000261a80 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 144.905517] INFO: Object 0xffff88000986a220 @offset=544 fp=0x (null)
[ 144.905517] [ 144.905521] Redzone ffff88000986a218: bb bb bb bb bb bb bb bb ........
[ 144.905523] Object ffff88000986a220: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 60 a7 kkkkkkkkkkkk~.`.
[ 144.905526] Object ffff88000986a230: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 144.905529] Object ffff88000986a240: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-14:20160812160322:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

** 76213 printk messages dropped ** [ 145.858424] [<ffffffff812ff4e7>] ? do_wp_page+0x9b4/0x9b4
** 92 printk messages dropped ** [ 145.858679] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
** 109 printk messages dropped ** [ 145.859010] [<ffffffff8133576b>] kasan_report+0x319/0x553
** 130 printk messages dropped ** [ 145.859391] [<ffffffff811a9b50>] copy_process+0x2323/0x424c
** 144 printk messages dropped ** [ 145.859796] Object at ffff88000b193b40, in cache vm_area_struct
** 167 printk messages dropped **
dmesg-yocto-kbuild-15:20160812160328:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 150.868081] power_supply test_battery: prop CHARGE_NOW=50
[ 150.924163] power_supply test_battery: prop CAPACITY=50
[ 151.508936] =============================================================================
[ 151.508941] BUG kmalloc-1024 (Not tainted): Poison overwritten
[ 151.508942] -----------------------------------------------------------------------------
[ 151.508942] [ 151.508943] Disabling lock debugging due to kernel taint
[ 151.508945] INFO: 0xffff88000c824b54-0xffff88000c824b57. First byte 0x6e instead of 0x6b
[ 151.508953] INFO: Allocated in __alloc_skb+0xdb/0x498 age=274 cpu=0 pid=342
[ 151.508990] INFO: Freed in qlist_free_all+0x33/0xac age=177 cpu=0 pid=466
[ 151.509026] INFO: Slab 0xffffea0000320800 objects=23 used=23 fp=0x (null) flags=0x4000000000004080
[ 151.509028] INFO: Object 0xffff88000c824b48 @offset=19272 fp=0xffff88000c822b08
[ 151.509028] [ 151.509032] Redzone ffff88000c824b40: bb bb bb bb bb bb bb bb ........
[ 151.509034] Object ffff88000c824b48: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6e 01 e0 ad kkkkkkkkkkkkn...
[ 151.509037] Object ffff88000c824b58: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 151.509039] Object ffff88000c824b68: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-16:20160812160324:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 146.795611] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 146.795639] power_supply test_usb: prop ONLINE=1
[ 146.872838] =============================================================================
[ 146.872843] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 146.872844] -----------------------------------------------------------------------------
[ 146.872844] [ 146.872846] Disabling lock debugging due to kernel taint
[ 146.872849] INFO: 0xffff88000a3adbb4-0xffff88000a3adbb7. First byte 0x6c instead of 0x6b
[ 146.872857] INFO: Allocated in anon_vma_fork+0xfa/0x3f9 age=177 cpu=0 pid=461
[ 146.872891] INFO: Freed in qlist_free_all+0x33/0xac age=11 cpu=0 pid=543
[ 146.872928] INFO: Slab 0xffffea000028eb00 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 146.872930] INFO: Object 0xffff88000a3adba8 @offset=7080 fp=0xffff88000a3ac828
[ 146.872930] [ 146.872934] Redzone ffff88000a3adba0: bb bb bb bb bb bb bb bb ........
[ 146.872938] Object ffff88000a3adba8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 00 8a kkkkkkkkkkkkl...
[ 146.872940] Object ffff88000a3adbb8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 146.872943] Object ffff88000a3adbc8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 146.872946] Object ffff88000a3adbd8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 146.872949] Redzone ffff88000a3adbe8: bb bb bb bb bb bb bb bb ........
[ 146.872951] Padding ffff88000a3add34: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 146.872956] CPU: 0 PID: 268 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 146.872958] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 146.872964] 0000000000000000 ffff88000b86f9d8 ffffffff81c91ab5 ffff88000b86fa08
[ 146.872967] ffffffff81330f07 ffff88000a3adbb4 000000000000006b ffff88000e8131c0
[ 146.872971] ffff88000a3adbb7 ffff88000b86fa58 ffffffff81330fac ffffffff83592f26
[ 146.872972] Call Trace:
[ 146.872978] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 146.872981] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 146.872985] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 146.872988] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 146.872991] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 146.872995] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 146.872999] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 146.873002] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 146.873006] [<ffffffff81ccf700>] ? debug_smp_processor_id+0x17/0x19
[ 146.873009] [<ffffffff8133006c>] ? set_track+0xad/0xef
[ 146.873012] [<ffffffff81330693>] ? init_object+0x6f/0x76
[ 146.873015] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 146.873019] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 146.873022] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 146.873026] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 146.873028] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 146.873031] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 146.873035] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 146.873039] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 146.873043] [<ffffffff8137fb67>] ? __fget_light+0x80/0xe3
[ 146.873046] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 146.873050] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 146.873054] [<ffffffff829a0101>] ? SYSC_recvfrom+0x27e/0x27e
[ 146.873057] [<ffffffff829a3896>] ? SYSC_socket+0xbd/0x102
[ 146.873060] [<ffffffff829a37d9>] ? sock_create+0x8e/0x8e
[ 146.873063] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 146.873067] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 146.873069] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 146.873073] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 146.873076] FIX anon_vma_chain: Restoring 0xffff88000a3adbb4-0xffff88000a3adbb7=0x6b
[ 146.873076]
dmesg-yocto-kbuild-17:20160812160326:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 154.213657] gfs2: gfs2 mount does not exist
[ 154.236652] floppy: error -5 while reading block 0
[ 154.259065] =============================================================================
[ 154.259071] BUG files_cache (Not tainted): Poison overwritten
[ 154.259072] -----------------------------------------------------------------------------
[ 154.259072] [ 154.259073] Disabling lock debugging due to kernel taint
[ 154.259076] INFO: 0xffff88000ba7114c-0xffff88000ba7114f. First byte 0x7e instead of 0x6b
[ 154.259086] INFO: Allocated in dup_fd+0x88/0x5b0 age=424 cpu=0 pid=275
[ 154.259122] INFO: Freed in qlist_free_all+0x33/0xac age=56 cpu=0 pid=648
[ 154.259171] INFO: Slab 0xffffea00002e9c00 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 154.259174] INFO: Object 0xffff88000ba71140 @offset=4416 fp=0x (null)
[ 154.259174] [ 154.259178] Redzone ffff88000ba71100: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 154.259181] Redzone ffff88000ba71110: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 154.259183] Redzone ffff88000ba71120: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 154.259186] Redzone ffff88000ba71130: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 154.259189] Object ffff88000ba71140: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 60 ab kkkkkkkkkkkk~.`.
[ 154.259191] Object ffff88000ba71150: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 154.259194] Object ffff88000ba71160: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-1:20160812160328:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 149.752961] power_supply test_ac: prop ONLINE=1
[ 149.888829] power_supply test_battery: uevent
[ 149.892978] =============================================================================
[ 149.892982] BUG kmalloc-4096 (Not tainted): Poison overwritten
[ 149.892983] -----------------------------------------------------------------------------
[ 149.892983] [ 149.892984] Disabling lock debugging due to kernel taint
[ 149.892987] INFO: 0xffff880009f54594-0xffff880009f54597. First byte 0x6e instead of 0x6b
[ 149.892996] INFO: Allocated in uevent_show+0x11c/0x25a age=116 cpu=0 pid=281
[ 149.893039] INFO: Freed in qlist_free_all+0x33/0xac age=17 cpu=0 pid=347
[ 149.893082] INFO: Slab 0xffffea000027d400 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 149.893084] INFO: Object 0xffff880009f54588 @offset=17800 fp=0x (null)
[ 149.893084] [ 149.893088] Redzone ffff880009f54580: bb bb bb bb bb bb bb bb ........
[ 149.893091] Object ffff880009f54588: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6e 01 60 ae kkkkkkkkkkkkn.`.
[ 149.893094] Object ffff880009f54598: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.893096] Object ffff880009f545a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-21:20160812160316:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 143.977111] =============================================================================
[ 143.986656] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 143.988717] -----------------------------------------------------------------------------
[ 143.988717] [ 144.011421] Disabling lock debugging due to kernel taint
[ 144.012983] INFO: 0xffff88000a2bd874-0xffff88000a2bd877. First byte 0x6c instead of 0x6b
[ 144.015577] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=175 cpu=0 pid=454
[ 144.043674] INFO: Freed in qlist_free_all+0x33/0xac age=48 cpu=0 pid=511
[ 144.064238] INFO: Slab 0xffffea000028af00 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 144.085285] INFO: Object 0xffff88000a2bd868 @offset=6248 fp=0xffff88000a2bd6c8
[ 144.085285] [ 144.088822] Redzone ffff88000a2bd860: bb bb bb bb bb bb bb bb ........
[ 144.092079] Object ffff88000a2bd868: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 c0 85 kkkkkkkkkkkkl...
[ 144.094964] Object ffff88000a2bd878: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 144.097816] Object ffff88000a2bd888: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 144.100622] Object ffff88000a2bd898: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 144.104041] Redzone ffff88000a2bd8a8: bb bb bb bb bb bb bb bb ........
[ 144.114182] Padding ffff88000a2bd9f4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 144.119997] CPU: 0 PID: 462 Comm: mount.sh Tainted: G B 4.7.0-05999-g80a9201 #1
[ 144.127309] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 144.132809] 0000000000000000 ffff880009dc7a48 ffffffff81c91ab5 ffff880009dc7a78
[ 144.136036] ffffffff81330f07 ffff88000a2bd874 000000000000006b ffff88000e8131c0
[ 144.142830] ffff88000a2bd877 ffff880009dc7ac8 ffffffff81330fac ffffffff83592f26
[ 144.145765] Call Trace:
[ 144.146865] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 144.148398] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 144.152768] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 144.154710] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 144.157211] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 144.158952] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 144.160735] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 144.162894] [<ffffffff81334818>] ? kasan_unpoison_shadow+0x14/0x35
[ 144.171589] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 144.179279] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 144.180914] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 144.182697] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 144.184558] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 144.187115] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 144.188737] [<ffffffff81315e96>] anon_vma_fork+0xfa/0x3f9
[ 144.191092] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 144.192825] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 144.194558] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 144.204038] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 144.205888] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 144.207479] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 144.209173] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 144.211032] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 144.213616] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 144.215440] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 144.216949] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 144.218663] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 144.220382] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 144.222214] FIX anon_vma_chain: Restoring 0xffff88000a2bd874-0xffff88000a2bd877=0x6b

dmesg-yocto-kbuild-24:20160812160323:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 146.525186] power_supply test_battery: prop HEALTH=Good
[ 146.527021] power_supply test_battery: prop PRESENT=1
[ 146.729387] ==================================================================
[ 146.729398] BUG: KASAN: use-after-free in unlink_anon_vmas+0x63/0x3cd at addr ffff88000c3acb78
[ 146.729401] Read of size 8 by task udevd/486
[ 146.729406] CPU: 0 PID: 486 Comm: udevd Not tainted 4.7.0-05999-g80a9201 #1
[ 146.729407] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 146.729414] 0000000000000000 ffff88000c0d7728 ffffffff81c91ab5 ffff88000c0d77a0
[ 146.729418] ffffffff8133576b ffffffff813156bd 0000000000000246 ffff88000c036ad8
[ 146.729421] ffff88000e4e4170 ffff88000c036a01 ffff88000c0d77b0 ffffffff812f78ca
[ 146.729422] Call Trace:
[ 146.729428] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 146.729433] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 146.729436] [<ffffffff813156bd>] ? unlink_anon_vmas+0x63/0x3cd
[ 146.729441] [<ffffffff812f78ca>] ? vma_interval_tree_remove+0x5f9/0x608
[ 146.729445] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 146.729448] [<ffffffff813156bd>] unlink_anon_vmas+0x63/0x3cd
[ 146.729452] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 146.729455] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 146.729459] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 146.729463] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 146.729468] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 146.729471] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 146.729475] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 146.729480] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 146.729483] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 146.729487] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 146.729490] [<ffffffff813e11b4>] load_script+0x4b8/0x506
[ 146.729493] [<ffffffff813e0cfc>] ? compat_SyS_ioctl+0x184d/0x184d
[ 146.729497] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 146.729500] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 146.729504] [<ffffffff81351535>] ? copy_strings+0x467/0x52d
[ 146.729507] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 146.729511] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 146.729515] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 146.729518] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 146.729521] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 146.729525] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 146.729529] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 146.729532] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 146.729536] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 146.729540] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 146.729543] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 146.729545] Object at ffff88000c3acb68, in cache anon_vma_chain
[ 146.729547] Object allocated with size 64 bytes.
[ 146.729547] Allocation:
[ 146.729548] PID = 416
[ 146.729553] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 146.729557] [<ffffffff81334733>] save_stack+0x46/0xce
[ 146.729561] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 146.729564] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 146.729568] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 146.729571] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 146.729574] [<ffffffff81315e96>] anon_vma_fork+0xfa/0x3f9
[ 146.729578] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 146.729582] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 146.729585] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 146.729588] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 146.729592] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 146.729593] Memory state around the buggy address:
[ 146.729596] ffff88000c3aca00: fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-27:20160812160323:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 138.649303] ==================================================================
[ 138.652465] BUG: KASAN: use-after-free in unlink_anon_vmas+0x205/0x3cd at addr ffff88000a87a4f8
[ 138.655767] Read of size 8 by task mount.sh/508
[ 138.657376] CPU: 0 PID: 508 Comm: mount.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 138.660158] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 138.676644] 0000000000000000 ffff88000bb97918 ffffffff81c91ab5 ffff88000bb97990
[ 138.680279] ffffffff8133576b ffffffff8131585f 0000000000000246 0000000000000000
[ 138.683701] 0000000000000000 ffff88000aadf0c8 ffff88000bb979a0 ffffffff812f83e9
[ 138.699900] Call Trace:
[ 138.700987] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 138.702852] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 138.704845] [<ffffffff8131585f>] ? unlink_anon_vmas+0x205/0x3cd
[ 138.706945] [<ffffffff812f83e9>] ? anon_vma_interval_tree_remove+0x5e2/0x608
[ 138.709281] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 138.724386] [<ffffffff8131585f>] unlink_anon_vmas+0x205/0x3cd
[ 138.726323] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 138.728157] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 138.730089] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 138.732029] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 138.734070] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 138.735955] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 138.750858] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 138.752989] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 138.755066] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 138.756933] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 138.758800] [<ffffffff81350002>] ? vfs_getattr_nosec+0xc/0xef
[ 138.778543] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 138.780170] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 138.781852] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 138.783615] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 138.785324] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 138.801094] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 138.802715] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 138.804327] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 138.805803] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 138.807301] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 138.808862] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 138.861681] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 138.881504] Object at ffff88000a87a4e8, in cache anon_vma_chain
[ 138.883603] Object allocated with size 64 bytes.
[ 138.885414] Allocation:
[ 138.886787] PID = 451
[ 138.888124] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 138.890285] [<ffffffff81334733>] save_stack+0x46/0xce
[ 138.892330] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 138.907384] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 138.909325] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 138.911342] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 138.913504] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 138.915637] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 138.917758] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 138.920046] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 138.934948] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 138.936859] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 138.938995] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 138.941237] Memory state around the buggy address:
[ 138.943082] ffff88000a87a380: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-2:20160812160317:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 143.707755] =============================================================================
[ 143.710507] BUG vm_area_struct (Not tainted): Poison overwritten
[ 143.712229] -----------------------------------------------------------------------------
[ 143.712229] [ 143.733816] Disabling lock debugging due to kernel taint
[ 143.735429] INFO: 0xffff88000c24e014-0xffff88000c24e017. First byte 0x7e instead of 0x6b
[ 143.738114] INFO: Allocated in mmap_region+0x33a/0xa41 age=173 cpu=0 pid=306
[ 143.805767] INFO: Freed in qlist_free_all+0x33/0xac age=7 cpu=0 pid=277
[ 143.869482] INFO: Slab 0xffffea0000309380 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 143.885467] INFO: Object 0xffff88000c24e008 @offset=8 fp=0x (null)
[ 143.885467] [ 143.888216] Redzone ffff88000c24e000: bb bb bb bb bb bb bb bb ........
[ 143.890996] Object ffff88000c24e008: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 60 af kkkkkkkkkkkk~.`.
[ 143.893893] Object ffff88000c24e018: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 143.896765] Object ffff88000c24e028: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-32:20160812160319:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 156.499540] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 156.518958] power_supply test_usb: prop ONLINE=1
[ 157.183231] =============================================================================
[ 157.188521] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 157.190512] -----------------------------------------------------------------------------
[ 157.190512] [ 157.195775] Disabling lock debugging due to kernel taint
[ 157.197875] INFO: 0xffff88000bd59054-0xffff88000bd59057. First byte 0x6c instead of 0x6b
[ 157.201365] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=174 cpu=0 pid=313
[ 157.237422] INFO: Freed in qlist_free_all+0x33/0xac age=13 cpu=0 pid=328
[ 157.280019] INFO: Slab 0xffffea00002f5600 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 157.283175] INFO: Object 0xffff88000bd59048 @offset=4168 fp=0xffff88000bd59d48
[ 157.283175] [ 157.286534] Redzone ffff88000bd59040: bb bb bb bb bb bb bb bb ........
[ 157.302668] Object ffff88000bd59048: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 a0 86 kkkkkkkkkkkkl...
[ 157.305906] Object ffff88000bd59058: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 157.327316] Object ffff88000bd59068: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 157.330613] Object ffff88000bd59078: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 157.333824] Redzone ffff88000bd59088: bb bb bb bb bb bb bb bb ........
[ 157.354987] Padding ffff88000bd591d4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 157.358162] CPU: 0 PID: 349 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 157.361127] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 157.382340] 0000000000000000 ffff88000a44f9d8 ffffffff81c91ab5 ffff88000a44fa08
[ 157.385619] ffffffff81330f07 ffff88000bd59054 000000000000006b ffff88000e8131c0
[ 157.388936] ffff88000bd59057 ffff88000a44fa58 ffffffff81330fac ffffffff83592f26
[ 157.410400] Call Trace:
[ 157.411652] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 157.413329] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 157.415094] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 157.439008] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 157.440642] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 157.442309] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 157.444056] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 157.445868] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 157.447518] [<ffffffff81ccf700>] ? debug_smp_processor_id+0x17/0x19
[ 157.449434] [<ffffffff8133006c>] ? set_track+0xad/0xef
[ 157.451207] [<ffffffff81330693>] ? init_object+0x6f/0x76
[ 157.465940] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 157.467587] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 157.469470] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 157.471996] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 157.473634] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 157.475624] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 157.477460] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 157.492327] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 157.494104] [<ffffffff813345bf>] ? kasan_poison_slab_free+0x28/0x2a
[ 157.495862] [<ffffffff81334c54>] ? kasan_slab_free+0xa4/0xad
[ 157.497694] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 157.499482] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 157.501238] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 157.503129] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 157.505140] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 157.507071] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 157.509097] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 157.511120] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 157.513249] FIX anon_vma_chain: Restoring 0xffff88000bd59054-0xffff88000bd59057=0x6b

dmesg-yocto-kbuild-33:20160812160331:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 149.771714] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 149.771741] power_supply test_ac: prop ONLINE=1
[ 150.360016] ==================================================================
[ 150.360026] BUG: KASAN: use-after-free in anon_vma_clone+0xfb/0x375 at addr ffff880009be8b70
[ 150.360029] Read of size 8 by task network.sh/574
[ 150.360034] CPU: 0 PID: 574 Comm: network.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 150.360037] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 150.360043] 0000000000000000 ffff88000a0bfb50 ffffffff81c91ab5 ffff88000a0bfbc8
[ 150.360047] ffffffff8133576b ffffffff81315b22 0000000000000246 ffffffff81330102
[ 150.360051] ffff8800098c0d40 0000000002000200 ffffffff81315ac6 ffff88000e8131c0
[ 150.360052] Call Trace:
[ 150.360057] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 150.360063] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 150.360066] [<ffffffff81315b22>] ? anon_vma_clone+0xfb/0x375
[ 150.360077] [<ffffffff81330102>] ? slab_post_alloc_hook+0x38/0x45
[ 150.360080] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 150.360085] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 150.360088] [<ffffffff81315b22>] anon_vma_clone+0xfb/0x375
[ 150.360091] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 150.360096] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 150.360099] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 150.360104] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 150.360109] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 150.360112] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 150.360116] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 150.360121] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 150.360125] [<ffffffff813479d9>] ? SyS_read+0x10b/0x138
[ 150.360129] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 150.360133] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 150.360136] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 150.360140] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 150.360143] Object at ffff880009be8b68, in cache anon_vma_chain
[ 150.360145] Object allocated with size 64 bytes.
[ 150.360145] Allocation:
[ 150.360146] PID = 574
[ 150.360153] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 150.360157] [<ffffffff81334733>] save_stack+0x46/0xce
[ 150.360161] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 150.360166] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 150.360169] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 150.360173] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 150.360176] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 150.360180] [<ffffffff81303aa0>] handle_mm_fault+0x683/0x11bb
[ 150.360187] [<ffffffff8111cf2b>] __do_page_fault+0x33e/0x624
[ 150.360191] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 150.360196] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 150.360200] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 150.360202] Memory state around the buggy address:
[ 150.360205] ffff880009be8a00: fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 150.360208] ffff880009be8a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-34:20160812160326:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 151.940151] (mount,555,0):ocfs2_fill_super:1218 ERROR: status = -22
[ 151.940611] gfs2: gfs2 mount does not exist
[ 151.982214] =============================================================================
[ 151.982220] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 151.982221] -----------------------------------------------------------------------------
[ 151.982221] [ 151.982222] Disabling lock debugging due to kernel taint
[ 151.982226] INFO: 0xffff88000aab0694-0xffff88000aab0697. First byte 0x6c instead of 0x6b
[ 151.982235] INFO: Allocated in anon_vma_fork+0xfa/0x3f9 age=416 cpu=0 pid=458
[ 151.982270] INFO: Freed in qlist_free_all+0x33/0xac age=35 cpu=0 pid=644
[ 151.982322] INFO: Slab 0xffffea00002aac00 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 151.982325] INFO: Object 0xffff88000aab0688 @offset=1672 fp=0x (null)
[ 151.982325] [ 151.982329] Redzone ffff88000aab0680: bb bb bb bb bb bb bb bb ........
[ 151.982332] Object ffff88000aab0688: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 00 8a kkkkkkkkkkkkl...
[ 151.982335] Object ffff88000aab0698: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 151.982337] Object ffff88000aab06a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 151.982340] Object ffff88000aab06b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 151.982342] Redzone ffff88000aab06c8: bb bb bb bb bb bb bb bb ........
[ 151.982345] Padding ffff88000aab0814: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 151.982350] CPU: 0 PID: 688 Comm: network.sh Tainted: G B 4.7.0-05999-g80a9201 #1
[ 151.982351] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 151.982357] 0000000000000000 ffff88000a307978 ffffffff81c91ab5 ffff88000a3079a8
[ 151.982361] ffffffff81330f07 ffff88000aab0694 000000000000006b ffff88000e8131c0
[ 151.982364] ffff88000aab0697 ffff88000a3079f8 ffffffff81330fac ffffffff83592f26
[ 151.982365] Call Trace:
[ 151.982370] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 151.982373] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 151.982377] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 151.982380] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 151.982383] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 151.982386] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 151.982390] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 151.982393] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 151.982397] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 151.982400] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 151.982403] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 151.982407] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 151.982410] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 151.982412] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 151.982415] [<ffffffff812fd786>] wp_page_copy+0xa1/0x644
[ 151.982417] [<ffffffff812ff4aa>] do_wp_page+0x977/0x9b4
[ 151.982420] [<ffffffff812feb33>] ? vm_normal_page+0x128/0x128
[ 151.982424] [<ffffffff812bd1f4>] ? unlock_page+0x28/0x28
[ 151.982426] [<ffffffff81301862>] ? __pmd_alloc+0x115/0x12f
[ 151.982429] [<ffffffff81304537>] handle_mm_fault+0x111a/0x11bb
[ 151.982432] [<ffffffff811eb8bc>] ? preempt_count_add+0xc0/0xc3
[ 151.982435] [<ffffffff8130341d>] ? apply_to_page_range+0x2fb/0x2fb
[ 151.982438] [<ffffffff811eb8bc>] ? preempt_count_add+0xc0/0xc3
[ 151.982441] [<ffffffff81387556>] ? mntput+0x5f/0x64
[ 151.982443] [<ffffffff8134a18c>] ? __fput+0x488/0x4ac
[ 151.982446] [<ffffffff8130b7a5>] ? find_vma+0x18/0xef
[ 151.982452] [<ffffffff8111cf2b>] __do_page_fault+0x33e/0x624
[ 151.982455] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 151.982460] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 151.982471] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 151.982475] FIX anon_vma_chain: Restoring 0xffff88000aab0694-0xffff88000aab0697=0x6b
[ 151.982475] [ 151.982477] FIX anon_vma_chain: Marking all objects used

dmesg-yocto-kbuild-35:20160812160323:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 138.702116] power_supply test_battery: prop SERIAL_NUMBER=4.7.0-05999-g80a9201
[ 138.792659] power_supply test_battery: prop TEMP=26
[ 138.973078] ==================================================================
[ 138.973116] BUG: KASAN: use-after-free in __rb_insert_augmented+0x343/0x59f at addr ffff88000b12aec8
[ 138.973118] Read of size 8 by task udevd/271
[ 138.973123] CPU: 0 PID: 271 Comm: udevd Not tainted 4.7.0-05999-g80a9201 #1
[ 138.973125] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 138.973131] 0000000000000000 ffff88000c5bfaa8 ffffffff81c91ab5 ffff88000c5bfb20
[ 138.973135] ffffffff8133576b ffffffff81c9eeac 0000000000000246 ffffffff81332213
[ 138.973139] ffff88000c5bfb70 ffffffff81332213 0000000f00000001 ffff88000e843e48
[ 138.973140] Call Trace:
[ 138.973145] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 138.973156] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 138.973160] [<ffffffff81c9eeac>] ? __rb_insert_augmented+0x343/0x59f
[ 138.973164] [<ffffffff81332213>] ? ___slab_alloc+0x284/0x31e
[ 138.973167] [<ffffffff81332213>] ? ___slab_alloc+0x284/0x31e
[ 138.973171] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 138.973174] [<ffffffff81c9eeac>] __rb_insert_augmented+0x343/0x59f
[ 138.973179] [<ffffffff812f6fc0>] ? __anon_vma_interval_tree_augment_propagate+0x75/0x75
[ 138.973183] [<ffffffff812f7df8>] anon_vma_interval_tree_insert+0x1c6/0x1d5
[ 138.973187] [<ffffffff81315c32>] anon_vma_clone+0x20b/0x375
[ 138.973190] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 138.973198] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 138.973202] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 138.973205] [<ffffffff811b0dd3>] ? do_wait+0x4c4/0x4d6
[ 138.973208] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 138.973212] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 138.973217] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 138.973228] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 138.973232] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 138.973235] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 138.973239] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 138.973242] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 138.973244] Object at ffff88000b12aea8, in cache anon_vma_chain
[ 138.973246] Object allocated with size 64 bytes.
[ 138.973246] Allocation:
[ 138.973247] PID = 318
[ 138.973256] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 138.973260] [<ffffffff81334733>] save_stack+0x46/0xce
[ 138.973264] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 138.973268] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 138.973271] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 138.973275] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 138.973278] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 138.973281] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 138.973285] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 138.973288] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 138.973292] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 138.973295] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 138.973299] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 138.973300] Memory state around the buggy address:
[ 138.973304] ffff88000b12ad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-37:20160812160328:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 150.392689] ufs: ufs was compiled with read-only support, can't be mounted as read-write
[ 150.394683] UDF-fs: warning (device nullb1): udf_fill_super: No partition found (2)
[ 150.601160] =============================================================================
[ 150.601164] BUG names_cache (Not tainted): Poison overwritten
[ 150.601165] -----------------------------------------------------------------------------
[ 150.601165] [ 150.601166] Disabling lock debugging due to kernel taint
[ 150.601169] INFO: 0xffff88000963eacc-0xffff88000963eacf. First byte 0x70 instead of 0x6b
[ 150.601178] INFO: Allocated in getname_kernel+0x51/0x253 age=62 cpu=0 pid=737
[ 150.601225] INFO: Freed in qlist_free_all+0x33/0xac age=25 cpu=0 pid=290
[ 150.601272] INFO: Slab 0xffffea0000258e00 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 150.601274] INFO: Object 0xffff88000963eac0 @offset=27328 fp=0xffff880009638040
[ 150.601274] [ 150.601279] Redzone ffff88000963ea80: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 150.601282] Redzone ffff88000963ea90: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 150.601284] Redzone ffff88000963eaa0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 150.601287] Redzone ffff88000963eab0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 150.601290] Object ffff88000963eac0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 70 01 e0 c0 kkkkkkkkkkkkp...
[ 150.601293] Object ffff88000963ead0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 150.601295] Object ffff88000963eae0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-38:20160812160316:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 149.396812] =============================================================================
[ 149.399771] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 149.401496] -----------------------------------------------------------------------------
[ 149.401496] [ 149.405307] Disabling lock debugging due to kernel taint
[ 149.406960] INFO: 0xffff88000be1a4f5-0xffff88000be1a4f7. First byte 0x1 instead of 0x6b
[ 149.409925] INFO: Allocated in anon_vma_fork+0xfa/0x3f9 age=201 cpu=0 pid=305
[ 149.424986] INFO: Freed in qlist_free_all+0x33/0xac age=27 cpu=0 pid=485
[ 149.445337] INFO: Slab 0xffffea00002f8680 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 149.448362] INFO: Object 0xffff88000be1a4e8 @offset=1256 fp=0xffff88000be1a828
[ 149.448362] [ 149.452019] Redzone ffff88000be1a4e0: bb bb bb bb bb bb bb bb ........
[ 149.454912] Object ffff88000be1a4e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 a0 dc kkkkkkkkkkkkk...
[ 149.474607] Object ffff88000be1a4f8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.477749] Object ffff88000be1a508: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.480855] Object ffff88000be1a518: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 149.483825] Redzone ffff88000be1a528: bb bb bb bb bb bb bb bb ........
[ 149.486720] Padding ffff88000be1a674: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 149.489633] CPU: 0 PID: 469 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 149.492360] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 149.495379] 0000000000000000 ffff88000a78f9d8 ffffffff81c91ab5 ffff88000a78fa08
[ 149.498414] ffffffff81330f07 ffff88000be1a4f5 000000000000006b ffff88000e8131c0
[ 149.501575] ffff88000be1a4f7 ffff88000a78fa58 ffffffff81330fac ffffffff83592f26
[ 149.504577] Call Trace:
[ 149.505800] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 149.507531] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 149.509255] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 149.511107] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 149.512793] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 149.514481] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 149.516453] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 149.518454] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 149.520140] [<ffffffff81334818>] ? kasan_unpoison_shadow+0x14/0x35
[ 149.522062] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 149.523856] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 149.525536] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 149.527496] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 149.530189] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 149.531859] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 149.533564] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 149.535326] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 149.537149] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 149.538877] [<ffffffff813345bf>] ? kasan_poison_slab_free+0x28/0x2a
[ 149.540837] [<ffffffff81334c54>] ? kasan_slab_free+0xa4/0xad
[ 149.542632] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 149.544224] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 149.545962] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 149.547845] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 149.549648] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 149.551239] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 149.553013] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 149.554867] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 149.556665] FIX anon_vma_chain: Restoring 0xffff88000be1a4f5-0xffff88000be1a4f7=0x6b
[ 149.556665] [ 149.560164] FIX anon_vma_chain: Marking all objects used
[ 149.728404] =============================================================================
[ 149.731308] BUG kmalloc-128 (Tainted: G B ): Poison overwritten
[ 149.733199] -----------------------------------------------------------------------------
[ 149.733199] [ 149.736785] INFO: 0xffff88000c30dd34-0xffff88000c30dd37. First byte 0x6d instead of 0x6b
[ 149.739487] INFO: Allocated in kzalloc+0xe/0x10 age=148 cpu=0 pid=271
[ 149.760918] INFO: Freed in qlist_free_all+0x33/0xac age=12 cpu=0 pid=276
[ 149.784054] INFO: Slab 0xffffea000030c340 objects=8 used=8 fp=0x (null) flags=0x4000000000000080
[ 149.787183] INFO: Object 0xffff88000c30dd28 @offset=3368 fp=0xffff88000c30d5a8
[ 149.787183] [ 149.790608] Redzone ffff88000c30dd20: bb bb bb bb bb bb bb bb ........
[ 149.793409] Object ffff88000c30dd28: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6d 01 40 e0 kkkkkkkkkkkkm.@.
[ 149.796318] Object ffff88000c30dd38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.799219] Object ffff88000c30dd48: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-40:20160812160327:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 153.410984] power_supply test_battery: prop MODEL_NAME=Test battery
[ 153.413162] power_supply test_battery: prop MANUFACTURER=Linux
[ 153.563927] ==================================================================
[ 153.563939] BUG: KASAN: use-after-free in unlink_anon_vmas+0x63/0x3cd at addr ffff88000a6d5bb8
[ 153.563942] Read of size 8 by task mount.sh/487
[ 153.563947] CPU: 0 PID: 487 Comm: mount.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 153.563948] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 153.563955] 0000000000000000 ffff88000a4bf918 ffffffff81c91ab5 ffff88000a4bf990
[ 153.563959] ffffffff8133576b ffffffff813156bd 0000000000000246 ffff88000b6ca6a8
[ 153.563962] ffff88000b6ca6a8 ffff88000e4fa4d8 ffff88000a4bf9a0 ffffffff812f78b3
[ 153.563963] Call Trace:
[ 153.563970] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 153.563975] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 153.563979] [<ffffffff813156bd>] ? unlink_anon_vmas+0x63/0x3cd
[ 153.563984] [<ffffffff812f78b3>] ? vma_interval_tree_remove+0x5e2/0x608
[ 153.563988] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 153.563991] [<ffffffff813156bd>] unlink_anon_vmas+0x63/0x3cd
[ 153.563995] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 153.563999] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 153.564003] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 153.564008] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 153.564012] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 153.564016] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 153.564021] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 153.564025] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 153.564029] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 153.564033] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 153.564036] [<ffffffff81350002>] ? vfs_getattr_nosec+0xc/0xef
[ 153.564039] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 153.564044] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 153.564048] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 153.564051] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 153.564055] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 153.564058] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 153.564063] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 153.564066] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 153.564069] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 153.564073] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 153.564078] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 153.564082] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 153.564085] Object at ffff88000a6d5ba8, in cache anon_vma_chain
[ 153.564086] Object allocated with size 64 bytes.
[ 153.564087] Allocation:
[ 153.564088] PID = 454
[ 153.564095] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 153.564099] [<ffffffff81334733>] save_stack+0x46/0xce
[ 153.564102] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 153.564107] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 153.564110] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 153.564114] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 153.564117] [<ffffffff81315e96>] anon_vma_fork+0xfa/0x3f9
[ 153.564121] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 153.564124] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 153.564128] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 153.564132] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 153.564136] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 153.564136] Memory state around the buggy address:
[ 153.564140] ffff88000a6d5a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-41:20160812160327:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 150.583689] power_supply test_ac: uevent
[ 150.698497] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 150.839580] =============================================================================
[ 150.839587] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 150.839588] -----------------------------------------------------------------------------
[ 150.839588] [ 150.839589] Disabling lock debugging due to kernel taint
[ 150.839593] INFO: 0xffff88000a522695-0xffff88000a522697. First byte 0x1 instead of 0x6b
[ 150.839602] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=116 cpu=0 pid=366
[ 150.839640] INFO: Freed in qlist_free_all+0x33/0xac age=15 cpu=0 pid=566
[ 150.839687] INFO: Slab 0xffffea0000294880 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 150.839689] INFO: Object 0xffff88000a522688 @offset=1672 fp=0xffff88000a522d08
[ 150.839689] [ 150.839693] Redzone ffff88000a522680: bb bb bb bb bb bb bb bb ........
[ 150.839697] Object ffff88000a522688: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 40 d9 kkkkkkkkkkkkk.@.
[ 150.839700] Object ffff88000a522698: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 150.839703] Object ffff88000a5226a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 150.839706] Object ffff88000a5226b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 150.839708] Redzone ffff88000a5226c8: bb bb bb bb bb bb bb bb ........
[ 150.839711] Padding ffff88000a522814: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 150.839716] CPU: 0 PID: 374 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 150.839718] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 150.839724] 0000000000000000 ffff88000af479d8 ffffffff81c91ab5 ffff88000af47a08
[ 150.839728] ffffffff81330f07 ffff88000a522695 000000000000006b ffff88000e8131c0
[ 150.839733] ffff88000a522697 ffff88000af47a58 ffffffff81330fac ffffffff83592f26
[ 150.839734] Call Trace:
[ 150.839739] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 150.839743] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 150.839747] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 150.839750] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 150.839753] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 150.839757] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 150.839761] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 150.839764] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 150.839769] [<ffffffff81ccf700>] ? debug_smp_processor_id+0x17/0x19
[ 150.839772] [<ffffffff8133006c>] ? set_track+0xad/0xef
[ 150.839775] [<ffffffff81330693>] ? init_object+0x6f/0x76
[ 150.839778] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 150.839782] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 150.839786] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 150.839789] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 150.839792] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 150.839796] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 150.839800] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 150.839804] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 150.839807] [<ffffffff81350326>] ? vfs_fstatat+0xa1/0xfd
[ 150.839811] [<ffffffff81350285>] ? SYSC_newfstat+0xa6/0xa6
[ 150.839814] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 150.839818] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 150.839821] [<ffffffff8134f46b>] ? cp_old_stat+0x40b/0x40b
[ 150.839825] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 150.839828] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 150.839831] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 150.839835] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 150.839839] FIX anon_vma_chain: Restoring 0xffff88000a522695-0xffff88000a522697=0x6b
[ 150.839839]
dmesg-yocto-kbuild-43:20160812160324:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 145.868056] =============================================================================
[ 145.870789] BUG kmalloc-256 (Not tainted): Poison overwritten
[ 145.872451] -----------------------------------------------------------------------------
[ 145.872451] [ 145.875960] Disabling lock debugging due to kernel taint
[ 145.877559] INFO: 0xffff88000ad83314-0xffff88000ad83317. First byte 0x6c instead of 0x6b
[ 145.880219] INFO: Allocated in do_execveat_common+0x268/0x11d2 age=171 cpu=0 pid=327
[ 145.920333] INFO: Freed in qlist_free_all+0x33/0xac age=65 cpu=0 pid=271
[ 145.952457] INFO: Slab 0xffffea00002b6080 objects=13 used=13 fp=0x (null) flags=0x4000000000004080
[ 145.955401] INFO: Object 0xffff88000ad83308 @offset=4872 fp=0xffff88000ad83c88
[ 145.955401] [ 146.000400] Redzone ffff88000ad83300: bb bb bb bb bb bb bb bb ........
[ 146.003176] Object ffff88000ad83308: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 00 ae kkkkkkkkkkkkl...
[ 146.006036] Object ffff88000ad83318: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 146.008916] Object ffff88000ad83328: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-44:20160812160326:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 146.197098] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 146.355165] power_supply test_usb: prop ONLINE=1
[ 146.609170] =============================================================================
[ 146.612154] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 146.614120] -----------------------------------------------------------------------------
[ 146.614120] [ 146.618076] Disabling lock debugging due to kernel taint
[ 146.632911] INFO: 0xffff88000a3ab055-0xffff88000a3ab057. First byte 0x1 instead of 0x6b
[ 146.636033] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=227 cpu=0 pid=344
[ 146.701951] INFO: Freed in qlist_free_all+0x33/0xac age=24 cpu=0 pid=532
[ 146.749173] INFO: Slab 0xffffea000028ea80 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 146.752414] INFO: Object 0xffff88000a3ab048 @offset=4168 fp=0xffff88000a3aab68
[ 146.752414] [ 146.756153] Redzone ffff88000a3ab040: bb bb bb bb bb bb bb bb ........
[ 146.772205] Object ffff88000a3ab048: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 20 db kkkkkkkkkkkkk. .
[ 146.775379] Object ffff88000a3ab058: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 146.778565] Object ffff88000a3ab068: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 146.781749] Object ffff88000a3ab078: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 146.797983] Redzone ffff88000a3ab088: bb bb bb bb bb bb bb bb ........
[ 146.801127] Padding ffff88000a3ab1d4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 146.804209] CPU: 0 PID: 490 Comm: mount.sh Tainted: G B 4.7.0-05999-g80a9201 #1
[ 146.807101] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 146.810263] 0000000000000000 ffff88000ba4f4e8 ffffffff81c91ab5 ffff88000ba4f518
[ 146.813604] ffffffff81330f07 ffff88000a3ab055 000000000000006b ffff88000e8131c0
[ 146.816960] ffff88000a3ab057 ffff88000ba4f568 ffffffff81330fac ffffffff83592f26
[ 146.820301] Call Trace:
[ 146.821528] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 146.823260] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 146.824988] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 146.826934] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 146.828726] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 146.830503] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 146.832370] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 146.834372] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 146.836288] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 146.838214] [<ffffffff813e5e8e>] ? load_elf_binary+0x1244/0x357c
[ 146.840183] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 146.842117] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 146.844273] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 146.847121] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 146.848886] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 146.850652] [<ffffffff81304113>] handle_mm_fault+0xcf6/0x11bb
[ 146.852431] [<ffffffff81330693>] ? init_object+0x6f/0x76
[ 146.854215] [<ffffffff8130341d>] ? apply_to_page_range+0x2fb/0x2fb
[ 146.856132] [<ffffffff812b1ba3>] ? perf_event_comm+0x15a/0x15a
[ 146.857960] [<ffffffff81334595>] ? kasan_poison_shadow+0x2f/0x31
[ 146.859829] [<ffffffff8130779a>] ? vma_gap_callbacks_propagate+0x75/0x75
[ 146.861937] [<ffffffff8130b86e>] ? find_vma+0xe1/0xef
[ 146.863708] [<ffffffff8111cf2b>] __do_page_fault+0x33e/0x624
[ 146.865604] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 146.867446] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 146.869365] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 146.871254] [<ffffffff81cb01da>] ? __clear_user+0x3d/0x62
[ 146.873063] [<ffffffff81cb025a>] clear_user+0x5b/0x68
[ 146.874765] [<ffffffff813e138b>] padzero+0x1b/0x30
[ 146.876436] [<ffffffff813e5ebf>] load_elf_binary+0x1275/0x357c
[ 146.878331] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 146.880199] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 146.882157] [<ffffffff813e11b4>] load_script+0x4b8/0x506
[ 146.883941] [<ffffffff813e0cfc>] ? compat_SyS_ioctl+0x184d/0x184d
[ 146.885819] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 146.887717] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 146.889615] [<ffffffff81351535>] ? copy_strings+0x467/0x52d
[ 146.891638] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 146.893638] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 146.895733] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 146.897771] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 146.899576] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 146.901342] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 146.903125] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 146.904840] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 146.906576] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 146.908406] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 146.910162] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 146.912145] FIX anon_vma_chain: Restoring 0xffff88000a3ab055-0xffff88000a3ab057=0x6b
[ 146.912145] [ 146.916061] FIX anon_vma_chain: Marking all objects used
[ 147.008226] =============================================================================
[ 147.011248] BUG kmalloc-256 (Tainted: G B ): Poison overwritten
[ 147.013423] -----------------------------------------------------------------------------
[ 147.013423] [ 147.017336] INFO: 0xffff88000a27c015-0xffff88000a27c017. First byte 0x1 instead of 0x6b
[ 147.020266] INFO: Allocated in do_execveat_common+0x268/0x11d2 age=287 cpu=0 pid=488
[ 147.035728] INFO: Freed in qlist_free_all+0x33/0xac age=169 cpu=0 pid=544
[ 147.071802] INFO: Slab 0xffffea0000289f00 objects=13 used=13 fp=0x (null) flags=0x4000000000004080
[ 147.075039] INFO: Object 0xffff88000a27c008 @offset=8 fp=0xffff88000a27c268
[ 147.075039] [ 147.078067] Redzone ffff88000a27c000: bb bb bb bb bb bb bb bb ........
[ 147.094157] Object ffff88000a27c008: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 40 f9 kkkkkkkkkkkkk.@.
[ 147.097355] Object ffff88000a27c018: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 147.100531] Object ffff88000a27c028: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-45:20160812160323:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 150.912791] (mount,482,0):ocfs2_fill_super:1218 ERROR: status = -22
[ 150.913222] gfs2: gfs2 mount does not exist
[ 151.305620] ==================================================================
[ 151.305630] BUG: KASAN: use-after-free in anon_vma_clone+0xfb/0x375 at addr ffff880009d6aeb0
[ 151.305633] Read of size 8 by task network.sh/672
[ 151.305637] CPU: 0 PID: 672 Comm: network.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 151.305639] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 151.305645] 0000000000000000 ffff88000bdafb50 ffffffff81c91ab5 ffff88000bdafbc8
[ 151.305649] ffffffff8133576b ffffffff81315b22 0000000000000246 ffffffff81330102
[ 151.305653] ffff88000baec140 0000000002000200 ffffffff81315ac6 ffff88000e8131c0
[ 151.305653] Call Trace:
[ 151.305659] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 151.323691] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 151.323699] [<ffffffff81315b22>] ? anon_vma_clone+0xfb/0x375
[ 151.323703] [<ffffffff81330102>] ? slab_post_alloc_hook+0x38/0x45
[ 151.323706] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 151.323711] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 151.323714] [<ffffffff81315b22>] anon_vma_clone+0xfb/0x375
[ 151.323716] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 151.323721] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 151.323726] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 151.323730] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 151.323734] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 151.323738] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 151.323741] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 151.323746] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 151.323751] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 151.323755] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 151.323759] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 151.323763] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 151.323766] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 151.323769] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 151.323773] Object at ffff880009d6aea8, in cache anon_vma_chain
[ 151.323775] Object allocated with size 64 bytes.
[ 151.323776] Allocation:
[ 151.323777] PID = 672
[ 151.323783] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 151.323787] [<ffffffff81334733>] save_stack+0x46/0xce
[ 151.323791] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 151.323794] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 151.323798] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 151.323801] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 151.323805] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 151.323809] [<ffffffff812fd786>] wp_page_copy+0xa1/0x644
[ 151.323812] [<ffffffff812ff4aa>] do_wp_page+0x977/0x9b4
[ 151.323816] [<ffffffff81304537>] handle_mm_fault+0x111a/0x11bb
[ 151.323819] [<ffffffff8111cf2b>] __do_page_fault+0x33e/0x624
[ 151.323823] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 151.323828] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 151.323831] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 151.323832] Memory state around the buggy address:
[ 151.323836] ffff880009d6ad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 151.323839] ffff880009d6ae00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-46:20160812160324:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 153.755290] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 153.827240] power_supply test_usb: prop ONLINE=1
[ 154.032733] ==================================================================
[ 154.035803] BUG: KASAN: use-after-free in unlink_anon_vmas+0x205/0x3cd at addr ffff88000a3531f8
[ 154.039047] Read of size 8 by task udevd/567
[ 154.040709] CPU: 0 PID: 567 Comm: udevd Not tainted 4.7.0-05999-g80a9201 #1
[ 154.055980] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 154.059274] 0000000000000000 ffff880009827728 ffffffff81c91ab5 ffff8800098277a0
[ 154.062734] ffffffff8133576b ffffffff8131585f 0000000000000246 0000000000000000
[ 154.066238] 0000000000000000 ffff880009f38a28 ffff8800098277b0 ffffffff812f83e9
[ 154.105075] Call Trace:
[ 154.106445] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 154.108206] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 154.110110] [<ffffffff8131585f>] ? unlink_anon_vmas+0x205/0x3cd
[ 154.125230] [<ffffffff812f83e9>] ? anon_vma_interval_tree_remove+0x5e2/0x608
[ 154.133569] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 154.135719] [<ffffffff8131585f>] unlink_anon_vmas+0x205/0x3cd
[ 154.140746] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 154.142767] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 154.150654] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 154.158597] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 154.172574] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 154.174378] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 154.176150] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 154.178175] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 154.180164] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 154.200218] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 154.202298] [<ffffffff813e11b4>] load_script+0x4b8/0x506
[ 154.204167] [<ffffffff813e0cfc>] ? compat_SyS_ioctl+0x184d/0x184d
[ 154.206221] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 154.226238] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 154.228228] [<ffffffff81351535>] ? copy_strings+0x467/0x52d
[ 154.230159] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 154.231888] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 154.233713] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 154.235476] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 154.237142] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 154.238785] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 154.253735] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 154.255582] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 154.257444] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 154.259189] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 154.260811] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 154.262572] Object at ffff88000a3531e8, in cache anon_vma_chain
[ 154.264245] Object allocated with size 64 bytes.
[ 154.278853] Allocation:
[ 154.280203] PID = 456
[ 154.281488] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 154.283529] [<ffffffff81334733>] save_stack+0x46/0xce
[ 154.285501] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 154.287210] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 154.288932] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 154.290719] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 154.305750] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 154.307822] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 154.309846] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 154.312065] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 154.313914] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 154.315549] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 154.330331] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 154.332514] Memory state around the buggy address:
[ 154.334306] ffff88000a353080: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-48:20160812160324:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 159.942048] power_supply test_battery: prop TIME_TO_FULL_NOW=3600
[ 159.944028] power_supply test_battery: prop MODEL_NAME=Test battery
[ 159.947815] =============================================================================
[ 159.947820] BUG skbuff_head_cache (Not tainted): Poison overwritten
[ 159.947821] -----------------------------------------------------------------------------
[ 159.947821] [ 159.947822] Disabling lock debugging due to kernel taint
[ 159.947825] INFO: 0xffff88000bc3accc-0xffff88000bc3accf. First byte 0x6e instead of 0x6b
[ 159.947834] INFO: Allocated in __alloc_skb+0xad/0x498 age=64 cpu=0 pid=282
[ 159.947874] INFO: Freed in qlist_free_all+0x33/0xac age=18 cpu=0 pid=293
[ 159.947917] INFO: Slab 0xffffea00002f0e80 objects=12 used=0 fp=0xffff88000bc3b440 flags=0x4000000000004080
[ 159.947920] INFO: Object 0xffff88000bc3acc0 @offset=3264 fp=0xffff88000bc3aa40
[ 159.947920] [ 159.947924] Redzone ffff88000bc3ac80: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 159.947927] Redzone ffff88000bc3ac90: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 159.947929] Redzone ffff88000bc3aca0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 159.947932] Redzone ffff88000bc3acb0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 159.947935] Object ffff88000bc3acc0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6e 01 40 ad kkkkkkkkkkkkn.@.
[ 159.947938] Object ffff88000bc3acd0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 159.947940] Object ffff88000bc3ace0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-4:20160812160333:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 148.893414] gfs2: gfs2 mount does not exist
[ 148.918637] floppy: error -5 while reading block 0
[ 148.992652] =============================================================================
[ 148.992658] BUG kmalloc-32 (Not tainted): Poison overwritten
[ 148.992659] -----------------------------------------------------------------------------
[ 148.992659] [ 148.992661] Disabling lock debugging due to kernel taint
[ 148.992664] INFO: 0xffff88000ac5a314-0xffff88000ac5a317. First byte 0x75 instead of 0x6b
[ 148.992676] INFO: Allocated in __list_lru_init+0x43/0xff age=216 cpu=0 pid=551
[ 148.992725] INFO: Freed in qlist_free_all+0x33/0xac age=74 cpu=0 pid=665
[ 148.992773] INFO: Slab 0xffffea00002b1680 objects=10 used=10 fp=0x (null) flags=0x4000000000000080
[ 148.992776] INFO: Object 0xffff88000ac5a308 @offset=776 fp=0xffff88000ac5ad88
[ 148.992776] [ 148.992781] Redzone ffff88000ac5a300: bb bb bb bb bb bb bb bb ........
[ 148.992784] Object ffff88000ac5a308: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 75 01 a0 c9 kkkkkkkkkkkku...
[ 148.992787] Object ffff88000ac5a318: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 148.992789] Redzone ffff88000ac5a328: bb bb bb bb bb bb bb bb ........
[ 148.992791] Padding ffff88000ac5a474: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 148.992797] CPU: 0 PID: 289 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 148.992799] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 148.992806] 0000000000000000 ffff88000b0dfb78 ffffffff81c91ab5 ffff88000b0dfba8
[ 148.992810] ffffffff81330f07 ffff88000ac5a314 000000000000006b ffff88000e802540
[ 148.992814] ffff88000ac5a317 ffff88000b0dfbf8 ffffffff81330fac ffffffff83592f26
[ 148.992815] Call Trace:
[ 148.992821] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 148.992825] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 148.992828] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 148.992831] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 148.992834] [<ffffffff812e617c>] ? shmem_symlink+0x122/0x378
[ 148.992838] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 148.992841] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 148.992844] [<ffffffff812e617c>] ? shmem_symlink+0x122/0x378
[ 148.992850] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 148.992853] [<ffffffff812e617c>] ? shmem_symlink+0x122/0x378
[ 148.992857] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 148.992860] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 148.992864] [<ffffffff813343df>] __kmalloc_track_caller+0x84/0xea
[ 148.992867] [<ffffffff812e94c7>] kmemdup+0x1b/0x3c
[ 148.992870] [<ffffffff812e617c>] shmem_symlink+0x122/0x378
[ 148.992873] [<ffffffff812e605a>] ? shmem_file_read_iter+0x4d6/0x4d6
[ 148.992877] [<ffffffff8135c6b7>] ? __inode_permission+0x148/0x1d3
[ 148.992880] [<ffffffff8135c7ff>] ? inode_permission+0xbd/0xc4
[ 148.992884] [<ffffffff8136632b>] vfs_symlink+0x79/0x98
[ 148.992888] [<ffffffff81366453>] SYSC_symlinkat+0x109/0x16f
[ 148.992891] [<ffffffff8136634a>] ? vfs_symlink+0x98/0x98
[ 148.992895] [<ffffffff813664d5>] SyS_symlink+0x11/0x13

dmesg-yocto-kbuild-50:20160812160327:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found
Starting udev
[ 145.360617] =============================================================================
[ 145.363600] BUG kmalloc-64 (Not tainted): Poison overwritten
[ 145.365347] -----------------------------------------------------------------------------
[ 145.365347] [ 145.369153] Disabling lock debugging due to kernel taint
[ 145.370952] INFO: 0xffff88000b7a5d54-0xffff88000b7a5d57. First byte 0x6d instead of 0x6b
[ 145.373899] INFO: Allocated in kernfs_fop_open+0x6fb/0x840 age=250 cpu=0 pid=271
[ 145.393698] INFO: Freed in qlist_free_all+0x33/0xac age=132 cpu=0 pid=321
[ 145.419234] INFO: Slab 0xffffea00002de900 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 145.441005] INFO: Object 0xffff88000b7a5d48 @offset=7496 fp=0xffff88000b7a4b68
[ 145.441005] [ 145.444790] Redzone ffff88000b7a5d40: bb bb bb bb bb bb bb bb ........
[ 145.447896] Object ffff88000b7a5d48: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6d 01 20 db kkkkkkkkkkkkm. .
[ 145.451037] Object ffff88000b7a5d58: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 145.454072] Object ffff88000b7a5d68: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 145.457184] Object ffff88000b7a5d78: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 145.460342] Redzone ffff88000b7a5d88: bb bb bb bb bb bb bb bb ........
[ 145.463352] Padding ffff88000b7a5ed4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 145.466504] CPU: 0 PID: 534 Comm: logger Tainted: G B 4.7.0-05999-g80a9201 #1
[ 145.469520] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 145.472651] 0000000000000000 ffff880009d67b98 ffffffff81c91ab5 ffff880009d67bc8
[ 145.475977] ffffffff81330f07 ffff88000b7a5d54 000000000000006b ffff88000e8036c0
[ 145.479161] ffff88000b7a5d57 ffff880009d67c18 ffffffff81330fac ffffffff83592f26
[ 145.482460] Call Trace:
[ 145.483718] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 145.485474] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 145.487310] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 145.489299] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 145.491090] [<ffffffff8299f639>] ? sock_alloc_inode+0x5f/0x1f5
[ 145.492975] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 145.494898] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 145.496938] [<ffffffff81330156>] ? slab_free_freelist_hook+0x47/0x50
[ 145.498827] [<ffffffff8299f639>] ? sock_alloc_inode+0x5f/0x1f5
[ 145.500618] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 145.502369] [<ffffffff8299f639>] ? sock_alloc_inode+0x5f/0x1f5
[ 145.504167] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 145.506196] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 145.509023] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 145.510892] [<ffffffff8299f639>] sock_alloc_inode+0x5f/0x1f5
[ 145.512747] [<ffffffff81379312>] alloc_inode+0x5b/0x122
[ 145.514469] [<ffffffff8137aefc>] new_inode_pseudo+0xc/0xc8
[ 145.516208] [<ffffffff829a22fd>] sock_alloc+0x3c/0x1f1
[ 145.517876] [<ffffffff829a3607>] __sock_create+0x85/0x1c9
[ 145.519671] [<ffffffff829a37ce>] sock_create+0x83/0x8e
[ 145.521409] [<ffffffff829a3853>] SYSC_socket+0x7a/0x102
[ 145.536221] [<ffffffff829a37d9>] ? sock_create+0x8e/0x8e
[ 145.538043] [<ffffffff810027d4>] ? prepare_exit_to_usermode+0x139/0x16d

dmesg-yocto-kbuild-52:20160812160315:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 150.636351] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 150.636354] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 150.636359] [<ffffffff81351535>] ? copy_strings+0x467/0x52d
[ 150.636363] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 150.636367] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 150.636371] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 150.636375] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 150.636378] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 150.636382] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 150.636385] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 150.636389] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 150.636392] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 150.636395] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 150.636399] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 150.636401] Object at ffff88000b397b40, in cache vm_area_struct
[ 150.636402] Object allocated with size 184 bytes.
[ 150.636403] Allocation:
[ 150.636404] PID = 486
[ 150.636408] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 150.636412] [<ffffffff81334733>] save_stack+0x46/0xce
[ 150.636416] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 150.636420] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 150.636424] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 150.636428] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 150.636432] [<ffffffff8130e558>] mmap_region+0x33a/0xa41
[ 150.636435] [<ffffffff8130f24e>] do_mmap+0x5ef/0x66a
[ 150.636439] [<ffffffff812e992d>] vm_mmap_pgoff+0x122/0x174
[ 150.636442] [<ffffffff812e99af>] vm_mmap+0x30/0x32
[ 150.636446] [<ffffffff813e1b67>] elf_map+0x179/0x18c
[ 150.636449] [<ffffffff813e5a54>] load_elf_binary+0xe0a/0x357c
[ 150.636453] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 150.636456] [<ffffffff813e11b4>] load_script+0x4b8/0x506
[ 150.636460] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 150.636465] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 150.636468] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 150.636472] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 150.636476] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 150.636479] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 150.636480] Memory state around the buggy address:
[ 150.636483] ffff88000b397a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-53:20160812160332:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 147.829833] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 147.829858] power_supply test_usb: prop ONLINE=1
[ 149.112220] =============================================================================
[ 149.112225] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 149.112226] -----------------------------------------------------------------------------
[ 149.112226] [ 149.112227] Disabling lock debugging due to kernel taint
[ 149.112230] INFO: 0xffff88000a4efa14-0xffff88000a4efa17. First byte 0x7e instead of 0x6b
[ 149.112238] INFO: Allocated in anon_vma_prepare+0x6b/0x2db age=155 cpu=0 pid=687
[ 149.112297] INFO: Freed in qlist_free_all+0x33/0xac age=90 cpu=0 pid=498
[ 149.112342] INFO: Slab 0xffffea0000293b80 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 149.112344] INFO: Object 0xffff88000a4efa08 @offset=6664 fp=0xffff88000a4ef868
[ 149.112344] [ 149.112348] Redzone ffff88000a4efa00: bb bb bb bb bb bb bb bb ........
[ 149.112351] Object ffff88000a4efa08: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 a0 bd kkkkkkkkkkkk~...
[ 149.112354] Object ffff88000a4efa18: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.112357] Object ffff88000a4efa28: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.112360] Object ffff88000a4efa38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 149.112363] Redzone ffff88000a4efa48: bb bb bb bb bb bb bb bb ........
[ 149.112366] Padding ffff88000a4efb94: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 149.112371] CPU: 0 PID: 597 Comm: mount.sh Tainted: G B 4.7.0-05999-g80a9201 #1
[ 149.112373] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 149.112379] 0000000000000000 ffff88000bdbfa48 ffffffff81c91ab5 ffff88000bdbfa78
[ 149.112383] ffffffff81330f07 ffff88000a4efa14 000000000000006b ffff88000e8131c0
[ 149.112387] ffff88000a4efa17 ffff88000bdbfac8 ffffffff81330fac ffffffff83592f26
[ 149.112388] Call Trace:
[ 149.112393] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 149.112396] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 149.112400] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 149.112403] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 149.112407] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 149.112410] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 149.112414] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 149.112417] [<ffffffff81334818>] ? kasan_unpoison_shadow+0x14/0x35
[ 149.112420] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 149.112425] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 149.112428] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 149.112431] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 149.112435] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 149.112438] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 149.112441] [<ffffffff81315e96>] anon_vma_fork+0xfa/0x3f9
[ 149.112446] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 149.112449] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 149.112453] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 149.112456] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 149.112460] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 149.112463] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 149.112467] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 149.112470] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 149.112474] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 149.112478] FIX anon_vma_chain: Restoring 0xffff88000a4efa14-0xffff88000a4efa17=0x6b

dmesg-yocto-kbuild-54:20160812160325:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 144.320302] blk_update_request: I/O error, dev fd0, sector 0
[ 144.320306] floppy: error -5 while reading block 0
[ 144.342545] =============================================================================
[ 144.342551] BUG vm_area_struct (Not tainted): Poison overwritten
[ 144.342552] -----------------------------------------------------------------------------
[ 144.342552] [ 144.342553] Disabling lock debugging due to kernel taint
[ 144.342557] INFO: 0xffff8800098f2444-0xffff8800098f2447. First byte 0x7e instead of 0x6b
[ 144.342566] INFO: Allocated in __split_vma+0x5b/0x48f age=220 cpu=0 pid=640
[ 144.342597] INFO: Freed in qlist_free_all+0x33/0xac age=138 cpu=0 pid=681
[ 144.342635] INFO: Slab 0xffffea0000263c80 objects=15 used=15 fp=0x (null) flags=0x4000000000004080
[ 144.342637] INFO: Object 0xffff8800098f2438 @offset=1080 fp=0xffff8800098f2c98
[ 144.342637] [ 144.342641] Redzone ffff8800098f2430: bb bb bb bb bb bb bb bb ........
[ 144.342644] Object ffff8800098f2438: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 a0 95 kkkkkkkkkkkk~...
[ 144.342647] Object ffff8800098f2448: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 144.342649] Object ffff8800098f2458: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-55:20160812160312:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 147.996187] power_supply test_ac: uevent
[ 147.997594] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 148.018547] =============================================================================
[ 148.018551] BUG kmalloc-256 (Not tainted): Poison overwritten
[ 148.018552] -----------------------------------------------------------------------------
[ 148.018552] [ 148.018553] Disabling lock debugging due to kernel taint
[ 148.018557] INFO: 0xffff880009cdf7d5-0xffff880009cdf7d7. First byte 0x1 instead of 0x6b
[ 148.018568] INFO: Allocated in do_execveat_common+0x268/0x11d2 age=167 cpu=0 pid=454
[ 148.018598] INFO: Freed in qlist_free_all+0x33/0xac age=72 cpu=0 pid=268
[ 148.018648] INFO: Slab 0xffffea0000273780 objects=13 used=13 fp=0x (null) flags=0x4000000000004080
[ 148.018651] INFO: Object 0xffff880009cdf7c8 @offset=6088 fp=0xffff880009cdebe8
[ 148.018651] [ 148.018655] Redzone ffff880009cdf7c0: bb bb bb bb bb bb bb bb ........
[ 148.018665] Object ffff880009cdf7c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 80 f6 kkkkkkkkkkkkk...
[ 148.018668] Object ffff880009cdf7d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 148.018671] Object ffff880009cdf7e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-57:20160812160319:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 134.994218] power_supply test_battery: prop CAPACITY_LEVEL=Normal
[ 134.996365] power_supply test_battery: prop TIME_TO_EMPTY_AVG=3600
[ 135.050884] =============================================================================
[ 135.050898] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 135.050899] -----------------------------------------------------------------------------
[ 135.050899] [ 135.050901] Disabling lock debugging due to kernel taint
[ 135.050904] INFO: 0xffff880009d001b5-0xffff880009d001b7. First byte 0x1 instead of 0x6b
[ 135.050963] INFO: Allocated in anon_vma_clone+0x9f/0x375 age=287 cpu=0 pid=363
[ 135.051063] INFO: Freed in qlist_free_all+0x33/0xac age=15 cpu=0 pid=479
[ 135.051115] INFO: Slab 0xffffea0000274000 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 135.051117] INFO: Object 0xffff880009d001a8 @offset=424 fp=0xffff880009d01ba8
[ 135.051117] [ 135.051122] Redzone ffff880009d001a0: bb bb bb bb bb bb bb bb ........
[ 135.051125] Object ffff880009d001a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 01 c0 ca kkkkkkkkkkkkk...
[ 135.051128] Object ffff880009d001b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 135.051130] Object ffff880009d001c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 135.051133] Object ffff880009d001d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 135.051135] Redzone ffff880009d001e8: bb bb bb bb bb bb bb bb ........
[ 135.051138] Padding ffff880009d00334: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 135.051153] CPU: 0 PID: 350 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 135.051159] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 135.051179] 0000000000000000 ffff88000ba0f9d8 ffffffff81c91ab5 ffff88000ba0fa08
[ 135.051183] ffffffff81330f07 ffff880009d001b5 000000000000006b ffff88000e8131c0
[ 135.051187] ffff880009d001b7 ffff88000ba0fa58 ffffffff81330fac ffffffff83592f26
[ 135.051188] Call Trace:
[ 135.051215] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 135.051219] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 135.051222] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 135.051226] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 135.051229] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 135.051233] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 135.051236] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 135.051245] [<ffffffff812f6e90>] ? __anon_vma_interval_tree_compute_subtree_last+0x31/0xec
[ 135.051248] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 135.051252] [<ffffffff812f7027>] ? __anon_vma_interval_tree_augment_rotate+0x67/0x74
[ 135.051261] [<ffffffff81c9f0f9>] ? __rb_insert_augmented+0x590/0x59f
[ 135.051265] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 135.051269] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 135.051273] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 135.051276] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 135.051279] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 135.051282] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 135.051286] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 135.051290] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 135.051294] [<ffffffff811b0dd3>] ? do_wait+0x4c4/0x4d6
[ 135.051298] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 135.051307] [<ffffffff811b0eee>] ? SYSC_wait4+0x109/0x140
[ 135.051311] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 135.051315] [<ffffffff811b0de5>] ? do_wait+0x4d6/0x4d6
[ 135.051319] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 135.051323] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 135.051326] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 135.051330] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 135.051335] FIX anon_vma_chain: Restoring 0xffff880009d001b5-0xffff880009d001b7=0x6b
[ 135.051335] [ 135.051337] FIX anon_vma_chain: Marking all objects used
[ 135.930883] ==================================================================
[ 135.930894] BUG: KASAN: use-after-free in __rb_erase_color+0x4d8/0x750 at addr ffff88000a824d28
[ 135.930896] Read of size 8 by task udevd/566
[ 135.930901] CPU: 0 PID: 566 Comm: udevd Tainted: G B 4.7.0-05999-g80a9201 #1
[ 135.930903] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 135.930909] 0000000000000000 ffff880009547870 ffffffff81c91ab5 ffff8800095478e8
[ 135.930912] ffffffff8133576b ffffffff81c9d71c 0000000000000246 0000000100130012
[ 135.930916] ffff88000b353ba8 ffff8800095478c8 ffffffff812f6e90 ffff88000b353bc8
[ 135.930917] Call Trace:
[ 135.930922] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 135.930927] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 135.930930] [<ffffffff81c9d71c>] ? __rb_erase_color+0x4d8/0x750
[ 135.930935] [<ffffffff812f6e90>] ? __anon_vma_interval_tree_compute_subtree_last+0x31/0xec
[ 135.930939] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 135.930942] [<ffffffff81c9d71c>] __rb_erase_color+0x4d8/0x750
[ 135.930946] [<ffffffff812f6fc0>] ? __anon_vma_interval_tree_augment_propagate+0x75/0x75
[ 135.930949] [<ffffffff812f8400>] anon_vma_interval_tree_remove+0x5f9/0x608
[ 135.930953] [<ffffffff8131573e>] unlink_anon_vmas+0xe4/0x3cd
[ 135.930956] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 135.930959] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 135.930962] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 135.930975] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 135.930993] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 135.930997] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 135.931002] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 135.931012] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 135.931016] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 135.931019] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 135.931023] [<ffffffff81350002>] ? vfs_getattr_nosec+0xc/0xef
[ 135.931026] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 135.931029] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 135.931033] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 135.931036] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 135.931040] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 135.931043] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 135.931047] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 135.931050] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 135.931053] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 135.931057] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 135.931069] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 135.931073] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 135.931075] Object at ffff88000a824d08, in cache anon_vma_chain
[ 135.931076] Object allocated with size 64 bytes.
[ 135.931077] Allocation:
[ 135.931078] PID = 268
[ 135.931090] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 135.931094] [<ffffffff81334733>] save_stack+0x46/0xce
[ 135.931098] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 135.931101] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 135.931105] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 135.931108] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 135.931111] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 135.931114] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 135.931118] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 135.931121] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 135.931124] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 135.931127] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 135.931131] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 135.931132] Memory state around the buggy address:
[ 135.931135] ffff88000a824c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-58:20160812160314:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 152.431919] gfs2: gfs2 mount does not exist
[ 152.459680] floppy: error -5 while reading block 0
[ 152.606162] =============================================================================
[ 152.606166] BUG names_cache (Not tainted): Poison overwritten
[ 152.606167] -----------------------------------------------------------------------------
[ 152.606167] [ 152.606168] Disabling lock debugging due to kernel taint
[ 152.606171] INFO: 0xffff880009ce590c-0xffff880009ce590f. First byte 0x6e instead of 0x6b
[ 152.606180] INFO: Allocated in getname_flags+0x5a/0x35c age=44 cpu=0 pid=283
[ 152.606210] INFO: Freed in qlist_free_all+0x33/0xac age=1 cpu=0 pid=268
[ 152.606247] INFO: Slab 0xffffea0000273800 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 152.606249] INFO: Object 0xffff880009ce5900 @offset=22784 fp=0x (null)
[ 152.606249] [ 152.606254] Redzone ffff880009ce58c0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 152.606256] Redzone ffff880009ce58d0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 152.606259] Redzone ffff880009ce58e0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 152.606262] Redzone ffff880009ce58f0: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
[ 152.606264] Object ffff880009ce5900: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6e 01 a0 87 kkkkkkkkkkkkn...
[ 152.606267] Object ffff880009ce5910: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 152.606270] Object ffff880009ce5920: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-59:20160812160317:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 148.755267] power_supply test_battery: prop CHARGE_TYPE=Fast
[ 149.008506] power_supply test_battery: prop HEALTH=Good
** 77806 printk messages dropped ** [ 149.468068] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
** 89 printk messages dropped ** [ 149.468329] [<ffffffff811a71bd>] __mmput+0x58/0x181
** 109 printk messages dropped ** [ 149.468646] [<ffffffff811b10c0>] ? is_current_pgrp_orphaned+0x96/0x96
** 130 printk messages dropped **
dmesg-yocto-kbuild-5:20160812160332:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 144.711527] power_supply test_battery: prop SERIAL_NUMBER=4.7.0-05999-g80a9201
[ 144.713298] floppy: error -5 while reading block 0
[ 144.713953] =============================================================================
[ 144.713955] BUG kmalloc-4096 (Not tainted): Poison overwritten
[ 144.713956] -----------------------------------------------------------------------------
[ 144.713956] [ 144.713957] Disabling lock debugging due to kernel taint
[ 144.713959] INFO: 0xffff88000a1fe854-0xffff88000a1fe857. First byte 0x6e instead of 0x6b
[ 144.713967] INFO: Allocated in kobject_uevent_env+0x1b1/0x8d4 age=19 cpu=0 pid=271
[ 144.713998] INFO: Freed in qlist_free_all+0x33/0xac age=5 cpu=0 pid=292
[ 144.714021] INFO: Slab 0xffffea0000287e00 objects=7 used=7 fp=0x (null) flags=0x4000000000004080
[ 144.714022] INFO: Object 0xffff88000a1fe848 @offset=26696 fp=0xffff88000a1f8008
[ 144.714022] [ 144.714025] Redzone ffff88000a1fe840: bb bb bb bb bb bb bb bb ........
[ 144.714027] Object ffff88000a1fe848: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6e 01 00 98 kkkkkkkkkkkkn...
[ 144.714028] Object ffff88000a1fe858: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 144.714030] Object ffff88000a1fe868: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

dmesg-yocto-kbuild-60:20160812160329:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 150.802074] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 150.802100] power_supply test_ac: prop ONLINE=1
[ 151.086177] =============================================================================
[ 151.086182] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 151.086183] -----------------------------------------------------------------------------
[ 151.086183] [ 151.086184] Disabling lock debugging due to kernel taint
[ 151.086187] INFO: 0xffff88000adafa14-0xffff88000adafa17. First byte 0x6c instead of 0x6b
[ 151.086196] INFO: Allocated in anon_vma_fork+0xfa/0x3f9 age=139 cpu=0 pid=477
[ 151.086229] INFO: Freed in qlist_free_all+0x33/0xac age=14 cpu=0 pid=638
[ 151.086268] INFO: Slab 0xffffea00002b6b80 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 151.086270] INFO: Object 0xffff88000adafa08 @offset=6664 fp=0xffff88000adaed08
[ 151.086270] [ 151.086274] Redzone ffff88000adafa00: bb bb bb bb bb bb bb bb ........
[ 151.086277] Object ffff88000adafa08: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6c 01 20 87 kkkkkkkkkkkkl. .
[ 151.086280] Object ffff88000adafa18: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 151.086283] Object ffff88000adafa28: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 151.086285] Object ffff88000adafa38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 151.086288] Redzone ffff88000adafa48: bb bb bb bb bb bb bb bb ........
[ 151.086291] Padding ffff88000adafb94: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 151.086295] CPU: 0 PID: 608 Comm: network.sh Tainted: G B 4.7.0-05999-g80a9201 #1
[ 151.086297] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 151.086303] 0000000000000000 ffff88000b3ff9d8 ffffffff81c91ab5 ffff88000b3ffa08
[ 151.086307] ffffffff81330f07 ffff88000adafa14 000000000000006b ffff88000e8131c0
[ 151.086311] ffff88000adafa17 ffff88000b3ffa58 ffffffff81330fac ffffffff83592f26
[ 151.086312] Call Trace:
[ 151.086317] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 151.086321] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 151.086324] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 151.086328] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 151.086331] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 151.086334] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 151.086338] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 151.086341] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 151.086345] [<ffffffff81ccf700>] ? debug_smp_processor_id+0x17/0x19
[ 151.086348] [<ffffffff8133006c>] ? set_track+0xad/0xef
[ 151.086351] [<ffffffff81330693>] ? init_object+0x6f/0x76
[ 151.086354] [<ffffffff81315ac6>] ? anon_vma_clone+0x9f/0x375
[ 151.086358] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 151.086361] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 151.086365] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 151.086367] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 151.086370] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 151.086374] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 151.086378] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 151.086381] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 151.086386] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 151.086390] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 151.086393] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 151.086398] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 151.086403] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 151.086407] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 151.086409] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 151.086413] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 151.086416] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 151.086420] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 151.086423] FIX anon_vma_chain: Restoring 0xffff88000adafa14-0xffff88000adafa17=0x6b

dmesg-yocto-kbuild-61:20160812160317:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 148.176815] (mount,609,0):ocfs2_fill_super:1218 ERROR: status = -22
[ 148.177281] gfs2: gfs2 mount does not exist
[ 148.198474] ==================================================================
[ 148.198485] BUG: KASAN: use-after-free in free_pgtables+0x9a/0x13e at addr ffff880009a9f710
[ 148.198488] Read of size 8 by task network.sh/668
[ 148.198493] CPU: 0 PID: 668 Comm: network.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 148.198495] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 148.198501] 0000000000000000 ffff88000a73f970 ffffffff81c91ab5 ffff88000a73f9e8
[ 148.198505] ffffffff8133576b ffffffff812fe7b6 0000000000000246 ffffffff81313438
[ 148.198509] ffff88000a73f700 1ffff1000136ccd7 ffff88000e446ba8 ffff88000e446bb0
[ 148.198510] Call Trace:
[ 148.198516] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 148.198521] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 148.198525] [<ffffffff812fe7b6>] ? free_pgtables+0x9a/0x13e
[ 148.198529] [<ffffffff81313438>] ? anon_vma_chain_free+0x13/0x15
[ 148.198533] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 148.198537] [<ffffffff812fe7b6>] free_pgtables+0x9a/0x13e
[ 148.198541] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 148.198544] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 148.198549] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 148.198553] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 148.198556] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 148.198561] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 148.198565] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 148.198568] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 148.198572] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 148.198576] [<ffffffff81350002>] ? vfs_getattr_nosec+0xc/0xef
[ 148.198579] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 148.198583] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 148.198587] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 148.198591] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 148.198595] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 148.198598] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 148.198601] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 148.198605] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 148.198608] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 148.198620] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 148.198625] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 148.198629] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 148.198631] Object at ffff880009a9f710, in cache vm_area_struct
[ 148.198632] Object allocated with size 184 bytes.
[ 148.198632] Allocation:
[ 148.198634] PID = 622
[ 148.198639] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 148.198642] [<ffffffff81334733>] save_stack+0x46/0xce
[ 148.198645] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 148.198649] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 148.198652] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 148.198655] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 148.198659] [<ffffffff811a9b50>] copy_process+0x2323/0x424c
[ 148.198662] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 148.198665] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 148.198668] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 148.198671] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 148.198672] Memory state around the buggy address:
[ 148.198675] ffff880009a9f600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-63:20160812160323:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 143.103669] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 143.216075] power_supply test_ac: prop ONLINE=1
[ 143.428482] ==================================================================
[ 143.428514] BUG: KASAN: use-after-free in unlink_anon_vmas+0x205/0x3cd at addr ffff88000b63c1b8
[ 143.428517] Read of size 8 by task mount.sh/564
[ 143.428522] CPU: 0 PID: 564 Comm: mount.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 143.428524] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 143.428530] 0000000000000000 ffff88000a39f918 ffffffff81c91ab5 ffff88000a39f990
[ 143.428534] ffffffff8133576b ffffffff8131585f 0000000000000246 0000000000000000
[ 143.428538] 0000000000000000 ffff88000aae9e08 ffff88000a39f9a0 ffffffff812f83e9
[ 143.428539] Call Trace:
[ 143.428551] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 143.428556] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 143.428560] [<ffffffff8131585f>] ? unlink_anon_vmas+0x205/0x3cd
[ 143.428565] [<ffffffff812f83e9>] ? anon_vma_interval_tree_remove+0x5e2/0x608
[ 143.428569] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 143.428572] [<ffffffff8131585f>] unlink_anon_vmas+0x205/0x3cd
[ 143.428575] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 143.428579] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 143.428582] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 143.428591] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 143.428599] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 143.428602] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 143.428607] [<ffffffff81353b6c>] flush_old_exec+0x1102/0x124a
[ 143.428616] [<ffffffff813e53c0>] load_elf_binary+0x776/0x357c
[ 143.428619] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 143.428623] [<ffffffff811f144c>] ? __might_sleep+0x156/0x162
[ 143.428627] [<ffffffff81350002>] ? vfs_getattr_nosec+0xc/0xef
[ 143.428630] [<ffffffff813e4c4a>] ? elf_core_dump+0x30d0/0x30d0
[ 143.428634] [<ffffffff813549eb>] search_binary_handler+0x100/0x1fb
[ 143.428638] [<ffffffff81355912>] do_execveat_common+0xe2c/0x11d2
[ 143.428641] [<ffffffff81354ae6>] ? search_binary_handler+0x1fb/0x1fb
[ 143.428645] [<ffffffff81332bab>] ? kmem_cache_alloc+0xa8/0xb6
[ 143.428648] [<ffffffff8135c29a>] ? getname_flags+0x337/0x35c
[ 143.428662] [<ffffffff82c80830>] ? ptregs_sys_vfork+0x10/0x10
[ 143.428666] [<ffffffff81355cd6>] do_execve+0x1e/0x20
[ 143.428669] [<ffffffff813564b5>] SyS_execve+0x25/0x29
[ 143.428673] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 143.428678] [<ffffffff8111d254>] ? do_page_fault+0x22/0x27
[ 143.428681] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 143.428683] Object at ffff88000b63c1a8, in cache anon_vma_chain
[ 143.428685] Object allocated with size 64 bytes.
[ 143.428686] Allocation:
[ 143.428687] PID = 444
[ 143.428698] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 143.428702] [<ffffffff81334733>] save_stack+0x46/0xce
[ 143.428706] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 143.428710] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 143.428714] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 143.428717] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 143.428720] [<ffffffff81315ac6>] anon_vma_clone+0x9f/0x375
[ 143.428723] [<ffffffff81315e34>] anon_vma_fork+0x98/0x3f9
[ 143.428728] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 143.428731] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 143.428734] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 143.428738] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 143.428741] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 143.428742] Memory state around the buggy address:
[ 143.428746] ffff88000b63c080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-64:20160812160322:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 143.636301] power_supply test_ac: prop ONLINE=1
[ 143.968996] ufs: ufs was compiled with read-only support, can't be mounted as read-write
[ 144.029482] ==================================================================
[ 144.029493] BUG: KASAN: use-after-free in unlink_anon_vmas+0x63/0x3cd at addr ffff88000b224d18
[ 144.029496] Read of size 8 by task network.sh/696
[ 144.029501] CPU: 0 PID: 696 Comm: network.sh Not tainted 4.7.0-05999-g80a9201 #1
[ 144.029503] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 144.029509] 0000000000000000 ffff88000ade7b70 ffffffff81c91ab5 ffff88000ade7be8
[ 144.029514] ffffffff8133576b ffffffff813156bd 0000000000000246 ffff88000ad468c0
[ 144.029517] ffff88000a826490 ffff88000e446ba8 ffff88000ade7bf8 ffffffff812f78b3
[ 144.029518] Call Trace:
[ 144.029524] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 144.029530] [<ffffffff8133576b>] kasan_report+0x319/0x553
[ 144.029533] [<ffffffff813156bd>] ? unlink_anon_vmas+0x63/0x3cd
[ 144.029538] [<ffffffff812f78b3>] ? vma_interval_tree_remove+0x5e2/0x608
[ 144.029542] [<ffffffff813359fb>] __asan_report_load8_noabort+0x14/0x16
[ 144.029545] [<ffffffff813156bd>] unlink_anon_vmas+0x63/0x3cd
[ 144.029549] [<ffffffff812fe804>] free_pgtables+0xe8/0x13e
[ 144.029553] [<ffffffff8130bb3a>] exit_mmap+0x13e/0x2b2
[ 144.029556] [<ffffffff8130b9fc>] ? split_vma+0x96/0x96
[ 144.029561] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 144.029565] [<ffffffff811a71bd>] __mmput+0x58/0x181
[ 144.029569] [<ffffffff811a730e>] mmput+0x28/0x2b
[ 144.029572] [<ffffffff811b1a0f>] do_exit+0x94f/0x19e0
[ 144.029576] [<ffffffff811b10c0>] ? is_current_pgrp_orphaned+0x96/0x96
[ 144.029581] [<ffffffff8111d106>] ? __do_page_fault+0x519/0x624
[ 144.029584] [<ffffffff811b2bc7>] do_group_exit+0xe8/0x227
[ 144.029588] [<ffffffff811b2d1e>] SyS_exit_group+0x18/0x18
[ 144.029592] [<ffffffff82c80673>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[ 144.029594] Object at ffff88000b224d08, in cache anon_vma_chain
[ 144.029596] Object allocated with size 64 bytes.
[ 144.029597] Allocation:
[ 144.029598] PID = 694
[ 144.029604] [<ffffffff810f473d>] save_stack_trace+0x25/0x40
[ 144.029608] [<ffffffff81334733>] save_stack+0x46/0xce
[ 144.029611] [<ffffffff81334d14>] kasan_kmalloc+0xb7/0xc6
[ 144.029615] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
[ 144.029619] [<ffffffff81330102>] slab_post_alloc_hook+0x38/0x45
[ 144.029623] [<ffffffff81332bab>] kmem_cache_alloc+0xa8/0xb6
[ 144.029626] [<ffffffff81315e96>] anon_vma_fork+0xfa/0x3f9
[ 144.029630] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 144.029634] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 144.029637] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 144.029641] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 144.029645] [<ffffffff82c80722>] return_from_SYSCALL_64+0x0/0x6a
[ 144.029646] Memory state around the buggy address:
[ 144.029650] ffff88000b224c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

dmesg-yocto-kbuild-7:20160812160334:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 149.605230] (mount,662,0):ocfs2_fill_super:1218 ERROR: status = -22
[ 149.605667] gfs2: gfs2 mount does not exist
[ 149.630718] =============================================================================
[ 149.630723] BUG anon_vma_chain (Not tainted): Poison overwritten
[ 149.630724] -----------------------------------------------------------------------------
[ 149.630724] [ 149.630725] Disabling lock debugging due to kernel taint
[ 149.630729] INFO: 0xffff88000ab98694-0xffff88000ab98697. First byte 0x7e instead of 0x6b
[ 149.630738] INFO: Allocated in anon_vma_prepare+0x6b/0x2db age=177 cpu=0 pid=648
[ 149.630773] INFO: Freed in qlist_free_all+0x33/0xac age=63 cpu=0 pid=518
[ 149.630824] INFO: Slab 0xffffea00002ae600 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 149.630827] INFO: Object 0xffff88000ab98688 @offset=1672 fp=0xffff88000ab98d08
[ 149.630827] [ 149.630831] Redzone ffff88000ab98680: bb bb bb bb bb bb bb bb ........
[ 149.630834] Object ffff88000ab98688: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 80 c5 kkkkkkkkkkkk~...
[ 149.630837] Object ffff88000ab98698: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.630839] Object ffff88000ab986a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.630842] Object ffff88000ab986b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 149.630844] Redzone ffff88000ab986c8: bb bb bb bb bb bb bb bb ........
[ 149.630847] Padding ffff88000ab98814: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 149.630852] CPU: 0 PID: 678 Comm: cat Tainted: G B 4.7.0-05999-g80a9201 #1
[ 149.630854] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 149.630859] 0000000000000000 ffff880009a0f978 ffffffff81c91ab5 ffff880009a0f9a8
[ 149.630863] ffffffff81330f07 ffff88000ab98694 000000000000006b ffff88000e8131c0
[ 149.630867] ffff88000ab98697 ffff880009a0f9f8 ffffffff81330fac ffffffff83592f26
[ 149.630868] Call Trace:
[ 149.630873] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 149.630876] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 149.630880] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 149.630883] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 149.630886] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 149.630890] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 149.630893] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 149.630896] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 149.630901] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 149.630904] [<ffffffff813153ea>] ? anon_vma_prepare+0x6b/0x2db
[ 149.630908] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 149.630911] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 149.630914] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 149.630917] [<ffffffff813153ea>] anon_vma_prepare+0x6b/0x2db
[ 149.630920] [<ffffffff812fd786>] wp_page_copy+0xa1/0x644
[ 149.630923] [<ffffffff812ff4aa>] do_wp_page+0x977/0x9b4
[ 149.630927] [<ffffffff812feb33>] ? vm_normal_page+0x128/0x128
[ 149.630931] [<ffffffff812bd1f4>] ? unlock_page+0x28/0x28
[ 149.630935] [<ffffffff812d5f0b>] ? lru_cache_add_active_or_unevictable+0x52/0xb0
[ 149.630938] [<ffffffff813015fe>] ? alloc_set_pte+0x5e4/0x5f7
[ 149.630942] [<ffffffff81304537>] handle_mm_fault+0x111a/0x11bb
[ 149.630945] [<ffffffff8130341d>] ? apply_to_page_range+0x2fb/0x2fb
[ 149.630948] [<ffffffff8130f24e>] ? do_mmap+0x5ef/0x66a
[ 149.630952] [<ffffffff8130b7a5>] ? find_vma+0x18/0xef
[ 149.630955] [<ffffffff8111cf2b>] __do_page_fault+0x33e/0x624
[ 149.630959] [<ffffffff8111d254>] do_page_fault+0x22/0x27
[ 149.630963] [<ffffffff8111718c>] do_async_page_fault+0x2c/0x5e
[ 149.630966] [<ffffffff82c81918>] async_page_fault+0x28/0x30
[ 149.630969] FIX anon_vma_chain: Restoring 0xffff88000ab98694-0xffff88000ab98697=0x6b
[ 149.630969] [ 149.630971] FIX anon_vma_chain: Marking all objects used
[ 149.658122] =============================================================================
[ 149.658127] BUG anon_vma_chain (Tainted: G B ): Poison overwritten
[ 149.658128] -----------------------------------------------------------------------------
[ 149.658128] [ 149.658131] INFO: 0xffff88000aa61a14-0xffff88000aa61a17. First byte 0x7e instead of 0x6b
[ 149.671160] INFO: Allocated in anon_vma_prepare+0x6b/0x2db age=181 cpu=0 pid=628
[ 149.671201] INFO: Freed in qlist_free_all+0x33/0xac age=71 cpu=0 pid=518
[ 149.671248] INFO: Slab 0xffffea00002a9800 objects=19 used=19 fp=0x (null) flags=0x4000000000004080
[ 149.671251] INFO: Object 0xffff88000aa61a08 @offset=6664 fp=0xffff88000aa61868
[ 149.671251] [ 149.671255] Redzone ffff88000aa61a00: bb bb bb bb bb bb bb bb ........
[ 149.671257] Object ffff88000aa61a08: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 7e 00 80 c5 kkkkkkkkkkkk~...
[ 149.671260] Object ffff88000aa61a18: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.671263] Object ffff88000aa61a28: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 149.671266] Object ffff88000aa61a38: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 149.671268] Redzone ffff88000aa61a48: bb bb bb bb bb bb bb bb ........
[ 149.671271] Padding ffff88000aa61b94: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
[ 149.671276] CPU: 0 PID: 647 Comm: network.sh Tainted: G B 4.7.0-05999-g80a9201 #1
[ 149.671277] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 149.671283] 0000000000000000 ffff88000a257a48 ffffffff81c91ab5 ffff88000a257a78
[ 149.671287] ffffffff81330f07 ffff88000aa61a14 000000000000006b ffff88000e8131c0
[ 149.671291] ffff88000aa61a17 ffff88000a257ac8 ffffffff81330fac ffffffff83592f26
[ 149.671292] Call Trace:
[ 149.671298] [<ffffffff81c91ab5>] dump_stack+0x19/0x1b
[ 149.671301] [<ffffffff81330f07>] print_trailer+0x15b/0x164
[ 149.671305] [<ffffffff81330fac>] check_bytes_and_report+0x9c/0xef
[ 149.671308] [<ffffffff8133194d>] check_object+0x12f/0x1fb
[ 149.671311] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 149.671314] [<ffffffff81331f00>] alloc_debug_processing+0x7e/0x10d
[ 149.671318] [<ffffffff8133211b>] ___slab_alloc+0x18c/0x31e
[ 149.671321] [<ffffffff81334818>] ? kasan_unpoison_shadow+0x14/0x35
[ 149.671324] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 149.671329] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 149.671331] [<ffffffff81315e96>] ? anon_vma_fork+0xfa/0x3f9
[ 149.671335] [<ffffffff813322c3>] __slab_alloc+0x16/0x2a
[ 149.671338] [<ffffffff813322c3>] ? __slab_alloc+0x16/0x2a
[ 149.671342] [<ffffffff81332b53>] kmem_cache_alloc+0x50/0xb6
[ 149.671344] [<ffffffff81315e96>] anon_vma_fork+0xfa/0x3f9
[ 149.671349] [<ffffffff811a9c9a>] copy_process+0x246d/0x424c
[ 149.671353] [<ffffffff811a782d>] ? __cleanup_sighand+0x23/0x23
[ 149.671357] [<ffffffff81380da8>] ? put_unused_fd+0x6f/0x6f
[ 149.671361] [<ffffffff811f1079>] ? ___might_sleep+0xa4/0x321
[ 149.671364] [<ffffffff811abe13>] _do_fork+0x159/0x3d9
[ 149.671367] [<ffffffff811abcba>] ? fork_idle+0x1ed/0x1ed
[ 149.671372] [<ffffffff813596a7>] ? __do_pipe_flags+0x1aa/0x1aa
[ 149.671375] [<ffffffff813479d9>] ? SyS_read+0x10b/0x138
[ 149.671378] [<ffffffff82c80800>] ? ptregs_sys_rt_sigreturn+0x10/0x10
[ 149.671382] [<ffffffff811ac105>] SyS_clone+0x14/0x16
[ 149.671385] [<ffffffff81002ab8>] do_syscall_64+0x1be/0x1fa
[ 149.671389] [<ffffffff82c80722>] entry_SYSCALL64_slow_path+0x25/0x25
[ 149.671392] FIX anon_vma_chain: Restoring 0xffff88000aa61a14-0xffff88000aa61a17=0x6b
[ 149.671392]
dmesg-yocto-kbuild-9:20160812160304:x86_64-randconfig-s0-08040601:4.7.0-05999-g80a9201:1

[ 139.260618] befs: (nullb1): invalid magic header
[ 139.261355] (mount,579,0):ocfs2_fill_super:1024 ERROR: superblock probe failed!
** 2687 printk messages dropped ** [ 139.999781] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
** 3147 printk messages dropped ** [ 140.221781] [<ffffffff8111b37c>] ? force_sig_info_fault+0x189/0x1b5
[ 140.235843] [<ffffffff8111b1f3>] ? is_prefetch+0x264/0x264
[ 140.235851] [<ffffffff810e0f92>] ? setup_sigcontext+0x4d2/0x4d2
** 91563 printk messages dropped ** [ 141.023269] [<ffffffff81334d35>] kasan_slab_alloc+0x12/0x14
** 88 printk messages dropped ** [ 141.023521] [<ffffffff812ffbec>] ? unmap_page_range+0x705/0x949
** 110 printk messages dropped **
Thanks,
Fengguang

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