[syzbot] WARNING in j1939_tp_txtimer

From: syzbot
Date: Fri Oct 29 2021 - 03:55:27 EST

Hello,

syzbot found the following issue on:

HEAD commit: 87066fdd2e30 Revert "mm/secretmem: use refcount_t instead ..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1305869f300000
kernel config: https://syzkaller.appspot.com/x/.config?x=59f3ef2b4077575
dashboard link: https://syzkaller.appspot.com/bug?extid=e551332be0091d437c65
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e551332be0091d437c65@xxxxxxxxxxxxxxxxxxxxxxxxx

vcan0: j1939_tp_txtimer: 0xffff888020eb8400: tx retry count reached
------------[ cut here ]------------
WARNING: CPU: 1 PID: 10368 at net/can/j1939/transport.c:1090 j1939_session_deactivate net/can/j1939/transport.c:1090 [inline]
WARNING: CPU: 1 PID: 10368 at net/can/j1939/transport.c:1090 j1939_session_deactivate_activate_next net/can/j1939/transport.c:1100 [inline]
WARNING: CPU: 1 PID: 10368 at net/can/j1939/transport.c:1090 j1939_tp_txtimer+0x25a9/0x2a80 net/can/j1939/transport.c:1169
Modules linked in:
CPU: 1 PID: 10368 Comm: syz-executor.3 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:j1939_session_deactivate net/can/j1939/transport.c:1090 [inline]
RIP: 0010:j1939_session_deactivate_activate_next net/can/j1939/transport.c:1100 [inline]
RIP: 0010:j1939_tp_txtimer+0x25a9/0x2a80 net/can/j1939/transport.c:1169
Code: 83 00 fb e9 07 ef ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 00 f0 ff ff 48 89 df e8 d1 6d bd f8 e9 f3 ef ff ff e8 a7 fe 71 f8 <0f> 0b e9 3d fa ff ff e8 9b fe 71 f8 e9 fe 01 00 00 89 d9 80 e1 07
RSP: 0018:ffffc90000dc0aa0 EFLAGS: 00010246
RAX: ffffffff8911b719 RBX: 0000000000000001 RCX: ffff88808b478000
RDX: 0000000000000302 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc90000dc0c50 R08: ffffffff8911b14f R09: ffffed10041d7086
R10: ffffed10041d7086 R11: 0000000000000000 R12: ffff888020eb8400
R13: 1ffff920001b8174 R14: ffff88807ae71070 R15: dffffc0000000000
FS: 00007f32687a1700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91a465f000 CR3: 00000000868be000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000000000000d0eb
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x1b7/0x5d0 kernel/time/hrtimer.c:1766
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
</IRQ>
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:finish_lock_switch+0x1c5/0x350 kernel/sched/core.c:4695
Code: be ff ff ff ff e8 db ca 9e 08 85 c0 74 37 4d 85 e4 75 58 0f 1f 44 00 00 4c 89 ff e8 a5 73 a1 08 e8 30 74 2e 00 fb 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 4d 85 e4 0f 85 4a ff ff ff
RSP: 0018:ffffc9000565df28 EFLAGS: 00000286
RAX: f560f1fddc198c00 RBX: 1ffff110173a6400 RCX: ffffffff8165c2f1
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880b9d32000 R08: dffffc0000000000 R09: fffffbfff1fa37ec
R10: fffffbfff1fa37ec R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b9d32298 R14: dffffc0000000000 R15: ffff8880b9d31540
finish_task_switch+0x140/0x630 kernel/sched/core.c:4812
context_switch kernel/sched/core.c:4943 [inline]
__schedule+0xb7a/0x1460 kernel/sched/core.c:6287
preempt_schedule_common kernel/sched/core.c:6459 [inline]
preempt_schedule+0x14d/0x190 kernel/sched/core.c:6484
preempt_schedule_thunk+0x16/0x18
unwind_next_frame+0x13fc/0x1fa0 arch/x86/kernel/unwind_orc.c:611
arch_stack_walk+0x112/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:121
save_stack+0xff/0x200 mm/page_owner.c:119
__set_page_owner+0x42/0x2f0 mm/page_owner.c:181
prep_new_page mm/page_alloc.c:2424 [inline]
get_page_from_freelist+0x779/0xa30 mm/page_alloc.c:4153
__alloc_pages+0x255/0x580 mm/page_alloc.c:5375
__page_cache_alloc+0x79/0x1c0 mm/filemap.c:1022
page_cache_ra_unbounded+0x2ee/0x9b0 mm/readahead.c:216
page_cache_async_readahead include/linux/pagemap.h:906 [inline]
filemap_readahead mm/filemap.c:2520 [inline]
filemap_get_pages+0x6b9/0xd90 mm/filemap.c:2561
filemap_read+0x3be/0x1060 mm/filemap.c:2628
__kernel_read+0x5d0/0xaf0 fs/read_write.c:443
integrity_kernel_read+0xac/0xf0 security/integrity/iint.c:199
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:484 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:515 [inline]
ima_calc_file_hash+0x1584/0x1b90 security/integrity/ima/ima_crypto.c:572
ima_collect_measurement+0x27d/0x510 security/integrity/ima/ima_api.c:254
process_measurement+0x101d/0x1dd0 security/integrity/ima/ima_main.c:337
ima_file_check+0xed/0x170 security/integrity/ima/ima_main.c:516
do_open fs/namei.c:3430 [inline]
path_openat+0x2917/0x3670 fs/namei.c:3561
do_filp_open+0x277/0x4f0 fs/namei.c:3588
do_sys_openat2+0x13b/0x500 fs/open.c:1200
do_sys_open fs/open.c:1216 [inline]
__do_sys_open fs/open.c:1224 [inline]
__se_sys_open fs/open.c:1220 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1220
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f326b22ba39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f32687a1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f326b32ef60 RCX: 00007f326b22ba39
RDX: 0000000000000000 RSI: 000000000014113e RDI: 0000000020000200
RBP: 00007f326b285e8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffecc05baef R14: 00007f32687a1300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: be ff ff ff ff mov $0xffffffff,%esi
5: e8 db ca 9e 08 callq 0x89ecae5
a: 85 c0 test %eax,%eax
c: 74 37 je 0x45
e: 4d 85 e4 test %r12,%r12
11: 75 58 jne 0x6b
13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
18: 4c 89 ff mov %r15,%rdi
1b: e8 a5 73 a1 08 callq 0x8a173c5
20: e8 30 74 2e 00 callq 0x2e7455
25: fb sti
26: 48 83 c4 10 add $0x10,%rsp
* 2a: 5b pop %rbx <-- trapping instruction
2b: 41 5c pop %r12
2d: 41 5d pop %r13
2f: 41 5e pop %r14
31: 41 5f pop %r15
33: 5d pop %rbp
34: c3 retq
35: 0f 0b ud2
37: 4d 85 e4 test %r12,%r12
3a: 0f 85 4a ff ff ff jne 0xffffff8a


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