BUG: unable to handle kernel paging request in expire_timers

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: bfc2776f ANDROID: usb: f_accessory: Don't drop NULL refere..
git tree: android12-5.4
console output: https://syzkaller.appspot.com/x/log.txt?x=178c50cf500000
kernel config: https://syzkaller.appspot.com/x/.config?x=1eebff2a764cf1a8
dashboard link: https://syzkaller.appspot.com/bug?extid=1b8813dbb0482e5493fb
compiler: Android (6032204 based on r370808) clang version 10.0.1 (https://android.googlesource.com/toolchain/llvm-project 6e765c10313d15c02ab29977a82938f66742c3a9)

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+1b8813...@syzkaller.appspotmail.com

BUG: unable to handle page fault for address: ffffffff83dabc61
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 540f067 P4D 540f067 PUD 5410063 PMD 3c001e1
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 138 Comm: systemd-journal Not tainted 5.4.86-syzkaller-00012-gbfc2776fd9c4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__hlist_del include/linux/list.h:764 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers+0x292/0x470 kernel/time/timer.c:1450
Code: 74 36 e8 21 04 0f 00 49 83 c7 08 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 1e bf 3d 00 <4d> 89 27 eb 0e 66 0f 1f 84 00 00 00 00 00 e8 eb 03 0f 00 48 bb 00
RSP: 0018:ffff8881f7109c30 EFLAGS: 00010046
RAX: 1ffffffff07b578c RBX: ffff8881f7123788 RCX: dffffc0000000000
RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f7109ba0
RBP: 1ffff1103d2b1639 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed103ee21375 R11: 0000000000000004 R12: ffff8881f7109d60
R13: ffff8881e958b1c0 R14: ffff8881e958b1c8 R15: ffffffff83dabc61
FS: 00007f5a6e8598c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff83dabc61 CR3: 00000001ee8b4000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
__run_timers+0x652/0x7a0 kernel/time/timer.c:1785
run_timer_softirq+0x46/0x80 kernel/time/timer.c:1798
__do_softirq+0x30f/0x769 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x1b4/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:547 [inline]
smp_apic_timer_interrupt+0x2d1/0x460 arch/x86/kernel/apic/apic.c:1146
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
</IRQ>
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:186
Code: 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 98 b3 f7 03 48 89 de 5b e9 67 0a 2e 00 90 90 90 90 90 90 90 48 8b 04 24 <65> 48 8b 0c 25 80 ed 01 00 65 8b 15 18 29 9d 7e f7 c2 00 01 1f 00
RSP: 0018:ffff8881eedbf758 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13
RAX: ffffffff819b63c9 RBX: ffff8881eedbf940 RCX: 1ffff1103ddb7f00
RDX: ffff8881eedbf940 RSI: ffff8881eedbf920 RDI: ffff8881eedbfbc0
RBP: ffff8881eedbf890 R08: ffffffff819b4588 R09: ffff8881eedbf920
R10: ffffed103ddb7f26 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8881eedbf920 R14: ffff8881eedbfbc0 R15: 1ffff1103ddb7f2c
lookup_fast+0x89/0xfd0 fs/namei.c:1634
walk_component+0x145/0x960 fs/namei.c:1881
link_path_walk+0x6eb/0x14e0 fs/namei.c:2210
path_parentat fs/namei.c:2441 [inline]
filename_parentat+0x229/0x860 fs/namei.c:2463
filename_create+0xfc/0x740 fs/namei.c:3696
user_path_create fs/namei.c:3771 [inline]
do_mkdirat+0xbc/0x330 fs/namei.c:3909
do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f5a6db15687
Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc05078618 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffc05079230 RCX: 00007f5a6db15687
RDX: 00007f5a6e586a00 RSI: 00000000000001ed RDI: 000056057827e8c0
RBP: 00007ffc05078650 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000012f30 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffc05079230 R15: 0000560578288b20
Modules linked in:
CR2: ffffffff83dabc61
---[ end trace 87afb6f464779322 ]---
RIP: 0010:__hlist_del include/linux/list.h:764 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers+0x292/0x470 kernel/time/timer.c:1450
Code: 74 36 e8 21 04 0f 00 49 83 c7 08 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 1e bf 3d 00 <4d> 89 27 eb 0e 66 0f 1f 84 00 00 00 00 00 e8 eb 03 0f 00 48 bb 00
RSP: 0018:ffff8881f7109c30 EFLAGS: 00010046
RAX: 1ffffffff07b578c RBX: ffff8881f7123788 RCX: dffffc0000000000
RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f7109ba0
RBP: 1ffff1103d2b1639 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed103ee21375 R11: 0000000000000004 R12: ffff8881f7109d60
R13: ffff8881e958b1c0 R14: ffff8881e958b1c8 R15: ffffffff83dabc61
FS: 00007f5a6e8598c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff83dabc61 CR3: 00000001ee8b4000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.