[2.6.36-rc1] List corruption when using initrd.
From: Tetsuo Handa
Date: Tue Aug 17 2010 - 01:17:50 EST
Hello.
I get list_add corruption message when booting with initrd on Debian Sarge.
Config is at http://I-love.SAKURA.ne.jp/tmp/config-2.6.36-rc1-2 .
[ 7.140845] VFS: Mounted root (cramfs filesystem) readonly on device 1:0.
[ 7.192635] mount used greatest stack depth: 2004 bytes left
[ 7.212497] linuxrc used greatest stack depth: 1572 bytes left
[ 7.214451] debug: unmapping init memory c158d000..c1751000
[ 7.218958] Write protecting the kernel text: 3648k
[ 7.220230] Write protecting the kernel read-only data: 1700k
[ 7.222770] ------------[ cut here ]------------
[ 7.223823] WARNING: at fs/inode.c:692 unlock_new_inode+0x78/0xc0()
[ 7.225249] Hardware name: VMware Virtual Platform
[ 7.228818] Modules linked in:
[ 7.229668] Pid: 1, comm: swapper Not tainted 2.6.36-rc1 #1
[ 7.230963] Call Trace:
[ 7.231535] [<c103dbe8>] ? printk+0x18/0x20
[ 7.232478] [<c10d8778>] ? unlock_new_inode+0x78/0xc0
[ 7.233668] [<c103d18c>] warn_slowpath_common+0x7c/0xa0
[ 7.234882] [<c10d8778>] ? unlock_new_inode+0x78/0xc0
[ 7.237936] [<c103d24d>] warn_slowpath_null+0x1d/0x40
[ 7.239257] [<c10d8778>] unlock_new_inode+0x78/0xc0
[ 7.240411] [<c10d8d5e>] ? iget_locked+0x2e/0x50
[ 7.241590] [<c113c219>] get_cramfs_inode+0x49/0x80
[ 7.242731] [<c113cad6>] cramfs_lookup+0x196/0x1c0
[ 7.245605] [<c10d6736>] ? d_lookup+0x26/0x50
[ 7.246633] [<c10cd017>] do_lookup+0x137/0x1b0
[ 7.247717] [<c10ce887>] do_last+0x67/0x450
[ 7.248695] [<c10cee5d>] do_filp_open+0x1ed/0x500
[ 7.249804] [<c10acc55>] ? __get_user_pages+0xe5/0x2d0
[ 7.250996] [<c10ace92>] ? get_user_pages+0x52/0x60
[ 7.252087] [<c11d39ac>] ? _copy_from_user+0x3c/0x70
[ 7.253266] [<c10c8818>] ? put_arg_page+0x8/0x10
[ 7.256494] [<c10c8be4>] ? copy_strings+0x194/0x1b0
[ 7.257644] [<c10c8f90>] open_exec+0x30/0xe0
[ 7.258665] [<c10fcce2>] load_script+0x1c2/0x220
[ 7.259757] [<c106a000>] ? trace_hardirqs_off_caller+0xf0/0x110
[ 7.261126] [<c105c8eb>] ? local_clock+0x3b/0x60
[ 7.262261] [<c1066c23>] ? lock_release_holdtime+0x73/0xb0
[ 7.265183] [<c10c9f16>] ? search_binary_handler+0xa6/0x260
[ 7.266484] [<c106c4b7>] ? __lock_release+0x47/0x70
[ 7.267607] [<c10c9f16>] ? search_binary_handler+0xa6/0x260
[ 7.268887] [<c10fcb20>] ? load_script+0x0/0x220
[ 7.270005] [<c10fcb20>] ? load_script+0x0/0x220
[ 7.271092] [<c10c9f1d>] search_binary_handler+0xad/0x260
[ 7.272329] [<c10ca23a>] do_execve+0x16a/0x230
[ 7.273397] [<c10cc858>] ? getname+0x38/0x80
[ 7.274410] [<c100a2c2>] sys_execve+0x42/0x60
[ 7.277201] [<c1002d43>] ptregs_execve+0x13/0x18
[ 7.278284] [<c138e0e1>] ? syscall_call+0x7/0xb
[ 7.279342] [<c100742f>] ? kernel_execve+0x1f/0x30
[ 7.280368] [<c158db70>] ? kernel_init+0x0/0xe0
[ 7.281449] [<c10012c7>] ? run_init_process+0x17/0x20
[ 7.282658] [<c100131c>] ? init_post+0x4c/0xb0
[ 7.285440] [<c158dc25>] ? kernel_init+0xb5/0xe0
[ 7.286524] [<c10031fa>] ? kernel_thread_helper+0x6/0x1c
[ 7.287778] ---[ end trace 13753716ad16dd15 ]---
[ 7.289098] ------------[ cut here ]------------
[ 7.290163] WARNING: at fs/inode.c:692 unlock_new_inode+0x78/0xc0()
[ 7.291538] Hardware name: VMware Virtual Platform
[ 7.292631] Modules linked in:
[ 7.295550] Pid: 1, comm: swapper Tainted: G W 2.6.36-rc1 #1
[ 7.296994] Call Trace:
[ 7.297632] [<c103dbe8>] ? printk+0x18/0x20
[ 7.298620] [<c10d8778>] ? unlock_new_inode+0x78/0xc0
[ 7.299777] [<c103d18c>] warn_slowpath_common+0x7c/0xa0
[ 7.300984] [<c10d8778>] ? unlock_new_inode+0x78/0xc0
[ 7.302191] [<c103d24d>] warn_slowpath_null+0x1d/0x40
[ 7.305155] [<c10d8778>] unlock_new_inode+0x78/0xc0
[ 7.306324] [<c10d8d5e>] ? iget_locked+0x2e/0x50
[ 7.307424] [<c113c219>] get_cramfs_inode+0x49/0x80
[ 7.308563] [<c113cad6>] cramfs_lookup+0x196/0x1c0
[ 7.309707] [<c10d6736>] ? d_lookup+0x26/0x50
[ 7.310741] [<c10cd017>] do_lookup+0x137/0x1b0
[ 7.311756] [<c10ce887>] do_last+0x67/0x450
[ 7.312743] [<c10d0a69>] ? page_getlink+0x49/0x70
[ 7.316035] [<c10ceff5>] do_filp_open+0x385/0x500
[ 7.317157] [<c11d39ac>] ? _copy_from_user+0x3c/0x70
[ 7.318340] [<c10c8818>] ? put_arg_page+0x8/0x10
[ 7.319408] [<c10c8be4>] ? copy_strings+0x194/0x1b0
[ 7.320541] [<c10c8f90>] open_exec+0x30/0xe0
[ 7.321572] [<c10fcce2>] load_script+0x1c2/0x220
[ 7.322653] [<c106a000>] ? trace_hardirqs_off_caller+0xf0/0x110
[ 7.325736] [<c105c8eb>] ? local_clock+0x3b/0x60
[ 7.326836] [<c1066c23>] ? lock_release_holdtime+0x73/0xb0
[ 7.328073] [<c10c9f16>] ? search_binary_handler+0xa6/0x260
[ 7.329388] [<c106c4b7>] ? __lock_release+0x47/0x70
[ 7.330531] [<c10c9f16>] ? search_binary_handler+0xa6/0x260
[ 7.331766] [<c10fcb20>] ? load_script+0x0/0x220
[ 7.332846] [<c10fcb20>] ? load_script+0x0/0x220
[ 7.336067] [<c10c9f1d>] search_binary_handler+0xad/0x260
[ 7.337338] [<c10ca23a>] do_execve+0x16a/0x230
[ 7.338402] [<c10cc858>] ? getname+0x38/0x80
[ 7.339409] [<c100a2c2>] sys_execve+0x42/0x60
[ 7.340424] [<c1002d43>] ptregs_execve+0x13/0x18
[ 7.341511] [<c138e0e1>] ? syscall_call+0x7/0xb
[ 7.342575] [<c100742f>] ? kernel_execve+0x1f/0x30
[ 7.345450] [<c158db70>] ? kernel_init+0x0/0xe0
[ 7.346530] [<c10012c7>] ? run_init_process+0x17/0x20
[ 7.347699] [<c100131c>] ? init_post+0x4c/0xb0
[ 7.348747] [<c158dc25>] ? kernel_init+0xb5/0xe0
[ 7.349914] [<c10031fa>] ? kernel_thread_helper+0x6/0x1c
[ 7.351128] ---[ end trace 13753716ad16dd16 ]---
[ 7.420484] pcnet32: pcnet32.c:v1.35 21.Apr.2008 tsbogend@xxxxxxxxxxxxxxxx
[ 7.422533] pcnet32 0000:02:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 7.424829] pcnet32: PCnet/PCI II 79C970A at 0x2000, 00:0c:29:9e:eb:32 assigned IRQ 18
[ 7.430623] pcnet32: eth0: registered as PCnet/PCI II 79C970A
[ 7.435459] pcnet32: 1 cards_found
[ 7.484267] ------------[ cut here ]------------
[ 7.485302] WARNING: at lib/list_debug.c:26 __list_add+0x8f/0xa0()
[ 7.486758] Hardware name: VMware Virtual Platform
[ 7.487865] list_add corruption. next->prev should be prev (c156b180), but was c1d67d08. (next=ded86fa0).
[ 7.492595] Modules linked in: pcnet32
[ 7.493633] Pid: 1146, comm: mount Tainted: G W 2.6.36-rc1 #1
[ 7.495188] Call Trace:
[ 7.495835] [<c11e1c00>] ? __list_add+0x20/0xa0
[ 7.496873] [<c11e1c6f>] ? __list_add+0x8f/0xa0
[ 7.497940] [<c103d18c>] warn_slowpath_common+0x7c/0xa0
[ 7.499579] [<c11e1c6f>] ? __list_add+0x8f/0xa0
[ 7.500652] [<c103d1e1>] warn_slowpath_fmt+0x31/0x40
[ 7.501809] [<c11e1c6f>] __list_add+0x8f/0xa0
[ 7.502929] [<c11e5425>] __percpu_counter_init+0x75/0x90
[ 7.504187] [<c10a7742>] shmem_fill_super+0xb2/0x170
[ 7.505233] [<c10c6135>] ? sget+0x165/0x1f0
[ 7.506620] [<c10c67e0>] ? set_anon_super+0x0/0xe0
[ 7.507768] [<c10c6c50>] get_sb_nodev+0x50/0x80
[ 7.508805] [<c10a78cf>] shmem_get_sb+0x1f/0x30
[ 7.509863] [<c10a7690>] ? shmem_fill_super+0x0/0x170
[ 7.511087] [<c10c6da1>] vfs_kern_mount+0x71/0x190
[ 7.512158] [<c10daef0>] ? get_fs_type+0x30/0xa0
[ 7.513175] [<c10c70e7>] do_kern_mount+0x37/0x90
[ 7.514614] [<c10dd087>] do_new_mount+0x57/0xa0
[ 7.515712] [<c10dd691>] do_mount+0x171/0x1b0
[ 7.516699] [<c10dd99c>] sys_mount+0x6c/0xa0
[ 7.517711] [<c138e0e1>] syscall_call+0x7/0xb
[ 7.518823] ---[ end trace 13753716ad16dd17 ]---
[ 7.633900] ------------[ cut here ]------------
[ 7.636734] WARNING: at lib/list_debug.c:26 __list_add+0x8f/0xa0()
[ 7.638118] Hardware name: VMware Virtual Platform
[ 7.639251] list_add corruption. next->prev should be prev (c156b180), but was (null). (next=de0a4fa0).
[ 7.641361] Modules linked in: pcnet32
[ 7.642296] Pid: 1159, comm: mount Tainted: G W 2.6.36-rc1 #1
[ 7.645946] Call Trace:
[ 7.646545] [<c11e1c00>] ? __list_add+0x20/0xa0
[ 7.647631] [<c11e1c6f>] ? __list_add+0x8f/0xa0
[ 7.648702] [<c103d18c>] warn_slowpath_common+0x7c/0xa0
[ 7.649890] [<c11e1c6f>] ? __list_add+0x8f/0xa0
[ 7.650946] [<c103d1e1>] warn_slowpath_fmt+0x31/0x40
[ 7.652114] [<c11e1c6f>] __list_add+0x8f/0xa0
[ 7.653142] [<c11e5425>] __percpu_counter_init+0x75/0x90
[ 7.656110] [<c10a7742>] shmem_fill_super+0xb2/0x170
[ 7.657266] [<c10c6135>] ? sget+0x165/0x1f0
[ 7.658226] [<c10c67e0>] ? set_anon_super+0x0/0xe0
[ 7.659341] [<c10c6c50>] get_sb_nodev+0x50/0x80
[ 7.660418] [<c10a78cf>] shmem_get_sb+0x1f/0x30
[ 7.661477] [<c10a7690>] ? shmem_fill_super+0x0/0x170
[ 7.662611] [<c10c6da1>] vfs_kern_mount+0x71/0x190
[ 7.665910] [<c10daef0>] ? get_fs_type+0x30/0xa0
[ 7.667024] [<c10c70e7>] do_kern_mount+0x37/0x90
[ 7.668122] [<c10dd087>] do_new_mount+0x57/0xa0
[ 7.669210] [<c10dd691>] do_mount+0x171/0x1b0
[ 7.670347] [<c10dd99c>] sys_mount+0x6c/0xa0
[ 7.671348] [<c138e0e1>] syscall_call+0x7/0xb
[ 7.672412] ---[ end trace 13753716ad16dd18 ]---
[ 7.698493] EXT3-fs (sda1): recovery required on readonly filesystem
[ 7.700100] EXT3-fs (sda1): write access will be enabled during recovery
[ 7.702792] EXT3-fs: barriers not enabled
[ 7.764556] scsi0: Tagged Queuing now active for Target 0
[ 7.768309] kjournald starting. Commit interval 5 seconds
[ 7.768887] EXT3-fs (sda1): recovery complete
[ 7.771507] EXT3-fs (sda1): mounted filesystem with ordered data mode
[ 7.773979] mount used greatest stack depth: 1168 bytes left
[ 10.792931] EXT3-fs (sda1): using internal journal
[ 15.186074] EXT3-fs: barriers not enabled
[ 15.219484] kjournald starting. Commit interval 5 seconds
[ 17.620661] EXT3-fs (sdb1): using internal journal
[ 17.622297] EXT3-fs (sdb1): mounted filesystem with ordered data mode
[ 25.617923] pcnet32 0000:02:00.0: eth0: link up
[ 34.921324] rcS used greatest stack depth: 988 bytes left
Also, I get RCU stall at "Unmounting local filesystems..." for both
"booted with initrd" and "booted without initrd" cases.
Maybe list corruption is happening without using initrd.
[ 465.144200] nfsd: last server has exited, flushing export cache
[ 487.051234] INFO: rcu_sched_state detected stall on CPU 0 (t=3750 jiffies)
[ 487.051234] sending NMI to all CPUs:
[ 487.051234] NMI backtrace for cpu 0
[ 487.051234] Modules linked in: ipv6 pcnet32
[ 487.051234]
[ 487.051234] Pid: 2793, comm: umount Tainted: G W 2.6.36-rc1 #1 440BX Desktop Reference Platform/VMware Virtual Platform
[ 487.051234] EIP: 0060:[<c101e839>] EFLAGS: 00000046 CPU: 0
[ 487.051234] EIP is at default_send_IPI_mask_logical+0x99/0x130
[ 487.051234] EAX: fffff000 EBX: 03000000 ECX: c101e7ce EDX: 00000c00
[ 487.051234] ESI: 00000c00 EDI: 00000046 EBP: de2e5dc0 ESP: de2e5da4
[ 487.051234] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 487.051234] Process umount (pid: 2793, ti=de2e5000 task=dab86af0 task.ti=de2e5000)
[ 487.051234] Stack:
[ 487.051234] 00000000 de2e5dc0 c1066c23 00000002 00000000 c1555a00 c1555a00 de2e5dcc
[ 487.051234] <0> c101e9e1 00000000 de2e5ddc c101f242 c1494565 c1555a00 de2e5dfc c108b8ac
[ 487.051234] <0> c14a9600 c14a2fa4 00000000 00000ea6 00000000 c1555a00 de2e5e0c c108b92f
[ 487.051234] Call Trace:
[ 487.051234] [<c1066c23>] ? lock_release_holdtime+0x73/0xb0
[ 487.051234] [<c101e9e1>] ? default_send_IPI_all+0x71/0x80
[ 487.051234] [<c101f242>] ? arch_trigger_all_cpu_backtrace+0x32/0x60
[ 487.051234] [<c108b8ac>] ? print_cpu_stall+0x4c/0x90
[ 487.051234] [<c108b92f>] ? check_cpu_stall+0x3f/0x70
[ 487.051234] [<c108c880>] ? __rcu_pending+0x20/0xe0
[ 487.051234] [<c108c969>] ? rcu_pending+0x29/0x70
[ 487.051234] [<c108c31c>] ? rcu_check_callbacks+0x6c/0xa0
[ 487.051234] [<c1048ef8>] ? update_process_times+0x38/0x60
[ 487.051234] [<c1064d95>] ? tick_periodic+0x25/0x80
[ 487.051234] [<c1064e09>] ? tick_handle_periodic+0x19/0x80
[ 487.051234] [<c1069d02>] ? mark_held_locks+0x42/0x80
[ 487.051234] [<c101d263>] ? local_apic_timer_interrupt+0x53/0x60
[ 487.051234] [<c101d29e>] ? smp_apic_timer_interrupt+0x2e/0x40
[ 487.051234] [<c138e53b>] ? apic_timer_interrupt+0x2f/0x34
[ 487.051234] [<c11e1cb9>] ? list_del+0x39/0x110
[ 487.051234] [<c11e5464>] ? percpu_counter_destroy+0x24/0x40
[ 487.051234] [<c11248fc>] ? ext3_put_super+0x9c/0x1d0
[ 487.051234] [<c10d828e>] ? invalidate_inodes+0x5e/0x70
[ 487.051234] [<c10c5fc3>] ? generic_shutdown_super+0xc3/0xd0
[ 487.051234] [<c10c6be5>] ? kill_block_super+0x25/0x40
[ 487.051234] [<c10c5db5>] ? deactivate_locked_super+0x25/0x50
[ 487.051234] [<c10c5e2f>] ? deactivate_super+0x4f/0x60
[ 487.051234] [<c10db98e>] ? mntput_no_expire+0x5e/0xa0
[ 487.051234] [<c10dc535>] ? sys_umount+0x65/0xb0
[ 487.051234] [<c10dc597>] ? sys_oldumount+0x17/0x20
[ 487.051234] [<c138e0e1>] ? syscall_call+0x7/0xb
[ 487.051234] Code: f6 c4 10 75 ed c1 e3 18 89 9a 10 c3 ff ff 8b 55 f0 a1 4c 1a 55 c1 09 f2 81 ce 00 04 00 00 83 7d f0 02 0f 44 d6 89 90 00 c3 ff ff <89> f8 c1 e8 09 83 f0 01 a8 01 74 0f 57 9d e8 d4 b7 04 00 83 c4
[ 487.051234] Call Trace:
[ 487.051234] [<c1066c23>] ? lock_release_holdtime+0x73/0xb0
[ 487.051234] [<c101e9e1>] default_send_IPI_all+0x71/0x80
[ 487.051234] [<c101f242>] arch_trigger_all_cpu_backtrace+0x32/0x60
[ 487.051234] [<c108b8ac>] print_cpu_stall+0x4c/0x90
[ 487.051234] [<c108b92f>] check_cpu_stall+0x3f/0x70
[ 487.051234] [<c108c880>] __rcu_pending+0x20/0xe0
[ 487.051234] [<c108c969>] rcu_pending+0x29/0x70
[ 487.051234] [<c108c31c>] rcu_check_callbacks+0x6c/0xa0
[ 487.051234] [<c1048ef8>] update_process_times+0x38/0x60
[ 487.051234] [<c1064d95>] tick_periodic+0x25/0x80
[ 487.051234] [<c1064e09>] tick_handle_periodic+0x19/0x80
[ 487.051234] [<c1069d02>] ? mark_held_locks+0x42/0x80
[ 487.051234] [<c101d263>] local_apic_timer_interrupt+0x53/0x60
[ 487.051234] [<c101d29e>] smp_apic_timer_interrupt+0x2e/0x40
[ 487.051234] [<c138e53b>] apic_timer_interrupt+0x2f/0x34
[ 487.051234] [<c11e1cb9>] ? list_del+0x39/0x110
[ 487.051234] [<c11e5464>] percpu_counter_destroy+0x24/0x40
[ 487.051234] [<c11248fc>] ext3_put_super+0x9c/0x1d0
[ 487.051234] [<c10d828e>] ? invalidate_inodes+0x5e/0x70
[ 487.051234] [<c10c5fc3>] generic_shutdown_super+0xc3/0xd0
[ 487.051234] [<c10c6be5>] kill_block_super+0x25/0x40
[ 487.051234] [<c10c5db5>] deactivate_locked_super+0x25/0x50
[ 487.051234] [<c10c5e2f>] deactivate_super+0x4f/0x60
[ 487.051234] [<c10db98e>] mntput_no_expire+0x5e/0xa0
[ 487.051234] [<c10dc535>] sys_umount+0x65/0xb0
[ 487.051234] [<c10dc597>] sys_oldumount+0x17/0x20
[ 487.051234] [<c138e0e1>] syscall_call+0x7/0xb
[ 487.051234] Pid: 2793, comm: umount Tainted: G W 2.6.36-rc1 #1
[ 487.051234] Call Trace:
[ 487.051234] [<c1009e12>] ? show_regs+0x22/0x30
[ 487.051234] [<c101efd9>] nmi_watchdog_tick+0x159/0x1f0
[ 487.051234] [<c1003b30>] default_do_nmi+0x90/0x1b0
[ 487.051234] [<c1003cc9>] do_nmi+0x79/0x90
[ 487.051234] [<c138e829>] nmi_stack_correct+0x28/0x2d
[ 487.051234] [<c101e7ce>] ? default_send_IPI_mask_logical+0x2e/0x130
[ 487.051234] [<c101e839>] ? default_send_IPI_mask_logical+0x99/0x130
[ 487.051234] [<c1066c23>] ? lock_release_holdtime+0x73/0xb0
[ 487.051234] [<c101e9e1>] default_send_IPI_all+0x71/0x80
[ 487.051234] [<c101f242>] arch_trigger_all_cpu_backtrace+0x32/0x60
[ 487.051234] [<c108b8ac>] print_cpu_stall+0x4c/0x90
[ 487.051234] [<c108b92f>] check_cpu_stall+0x3f/0x70
[ 487.051234] [<c108c880>] __rcu_pending+0x20/0xe0
[ 487.051234] [<c108c969>] rcu_pending+0x29/0x70
[ 487.051234] [<c108c31c>] rcu_check_callbacks+0x6c/0xa0
[ 487.051234] [<c1048ef8>] update_process_times+0x38/0x60
[ 487.051234] [<c1064d95>] tick_periodic+0x25/0x80
[ 487.051234] [<c1064e09>] tick_handle_periodic+0x19/0x80
[ 487.051234] [<c1069d02>] ? mark_held_locks+0x42/0x80
[ 487.051234] [<c101d263>] local_apic_timer_interrupt+0x53/0x60
[ 487.051234] [<c101d29e>] smp_apic_timer_interrupt+0x2e/0x40
[ 487.051234] [<c138e53b>] apic_timer_interrupt+0x2f/0x34
[ 487.051234] [<c11e1cb9>] ? list_del+0x39/0x110
[ 487.051234] [<c11e5464>] percpu_counter_destroy+0x24/0x40
[ 487.051234] [<c11248fc>] ext3_put_super+0x9c/0x1d0
[ 487.051234] [<c10d828e>] ? invalidate_inodes+0x5e/0x70
[ 487.051234] [<c10c5fc3>] generic_shutdown_super+0xc3/0xd0
[ 487.051234] [<c10c6be5>] kill_block_super+0x25/0x40
[ 487.051234] [<c10c5db5>] deactivate_locked_super+0x25/0x50
[ 487.051234] [<c10c5e2f>] deactivate_super+0x4f/0x60
[ 487.051234] [<c10db98e>] mntput_no_expire+0x5e/0xa0
[ 487.051234] [<c10dc535>] sys_umount+0x65/0xb0
[ 487.051234] [<c10dc597>] sys_oldumount+0x17/0x20
[ 487.051234] [<c138e0e1>] syscall_call+0x7/0xb
[ 487.042994] NMI backtrace for cpu 1
[ 487.042994] Modules linked in: ipv6 pcnet32
[ 487.042994]
[ 487.042994] Pid: 0, comm: kworker/0:0 Tainted: G W 2.6.36-rc1 #1 440BX Desktop Reference Platform/VMware Virtual Platform
[ 487.042994] EIP: 0060:[<c100a334>] EFLAGS: 00000202 CPU: 1
[ 487.042994] EIP is at default_idle+0x34/0x60
[ 487.042994] EAX: 00000002 EBX: 00000001 ECX: 00000001 EDX: 00000001
[ 487.042994] ESI: 00000000 EDI: 00000000 EBP: df9f5f98 ESP: df9f5f98
[ 487.042994] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 487.042994] Process kworker/0:0 (pid: 0, ti=df9f5000 task=dfa0a2b0 task.ti=df9f5000)
[ 487.042994] Stack:
[ 487.042994] df9f5fa8 c1001619 02010800 00000000 df9f5fb0 c1386a5a 00000000 00000000
[ 487.042994] <0> 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 487.042994] <0> 000000d8 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 487.042994] Call Trace:
[ 487.042994] [<c1001619>] ? cpu_idle+0x59/0xa0
[ 487.042994] [<c1386a5a>] ? start_secondary+0xca/0x100
[ 487.042994] Code: 85 d2 75 43 80 3d a5 ab 58 c1 00 74 3a 89 e0 25 00 f0 ff ff 83 60 0c fb 0f ae f0 8d 76 00 f6 40 08 08 75 15 e8 ce fb 05 00 fb f4 <89> e0 25 00 f0 ff ff 83 48 0c 04 90 5d c3 e8 b9 fb 05 00 fb eb
[ 487.042994] Call Trace:
[ 487.042994] [<c1001619>] cpu_idle+0x59/0xa0
[ 487.042994] [<c1386a5a>] start_secondary+0xca/0x100
[ 487.042994] Pid: 0, comm: kworker/0:0 Tainted: G W 2.6.36-rc1 #1
[ 487.042994] Call Trace:
[ 487.042994] [<c1009e12>] ? show_regs+0x22/0x30
[ 487.042994] [<c101efd9>] nmi_watchdog_tick+0x159/0x1f0
[ 487.042994] [<c1003b30>] default_do_nmi+0x90/0x1b0
[ 487.042994] [<c138e114>] ? restore_all_notrace+0x0/0x18
[ 487.042994] [<c1003cc9>] do_nmi+0x79/0x90
[ 487.042994] [<c138e829>] nmi_stack_correct+0x28/0x2d
[ 487.042994] [<c100a334>] ? default_idle+0x34/0x60
[ 487.042994] [<c1001619>] cpu_idle+0x59/0xa0
[ 487.042994] [<c1386a5a>] start_secondary+0xca/0x100
Regards.
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