syzbot


BUG: unable to handle kernel paging request in expire_timers

Status: auto-closed as invalid on 2021/08/07 04:23
Reported-by: syzbot+1b8813dbb0482e5493fb@syzkaller.appspotmail.com
First crash: 1265d, last: 1173d
Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 BUG: unable to handle kernel paging request in expire_timers (2) 6 520d 771d 0/2 auto-obsoleted due to no activity on 2023/05/22 09:21
upstream KASAN: slab-use-after-free Write in expire_timers mm acpi batman 7 417d 418d 0/27 auto-obsoleted due to no activity on 2023/08/23 09:02
upstream KASAN: use-after-free Write in expire_timers arm 1 583d 581d 0/27 auto-obsoleted due to no activity on 2023/03/20 12:09
upstream KMSAN: uninit-value in expire_timers (2) kernel 2 1185d 1221d 0/27 auto-closed as invalid on 2021/06/26 09:57
upstream KMSAN: uninit-value in expire_timers (3) ext4 1 1087d 1087d 0/27 auto-closed as invalid on 2021/10/02 12:28
upstream KMSAN: uninit-value in expire_timers (4) kernel 1 958d 958d 0/27 auto-closed as invalid on 2022/02/08 07:20
android-54 general protection fault in expire_timers 1 1180d 1180d 0/2 auto-closed as invalid on 2021/07/30 19:44

Sample crash report:
BUG: unable to handle page fault for address: ffffffff81a1dae2
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 5e0f067 P4D 5e0f067 PUD 5e10063 PMD 1a001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.109-syzkaller-00004-gb98c912db9ec #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+0x14f/0x410 kernel/time/timer.c:1450
Code: fb 3d 00 4d 89 3c 24 4d 85 ff 74 2f e8 da 2d 0f 00 49 83 c7 08 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 d1 fb 3d 00 <4d> 89 27 eb 11 66 66 2e 0f 1f 84 00 00 00 00 00 90 e8 ab 2d 0f 00
RSP: 0018:ffff8881f6e09d10 EFLAGS: 00010046
RAX: 1ffffffff0343b5c RBX: dffffc0000000000 RCX: ffffffff85e18a80
RDX: 0000000000000102 RSI: 0000000000000004 RDI: ffff8881f6e09c80
RBP: 1ffff1103c401639 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed103edc1391 R11: 0000000000000004 R12: ffff8881f6e09e20
R13: 1ffff1103c401638 R14: ffff8881e200b1c8 R15: ffffffff81a1dae2
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff81a1dae2 CR3: 00000001ee02b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __run_timers+0x603/0x740 kernel/time/timer.c:1785
 run_timer_softirq+0x46/0x80 kernel/time/timer.c:1798
 __do_softirq+0x23e/0x615 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x195/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:537 [inline]
 smp_apic_timer_interrupt+0x113/0x420 arch/x86/kernel/apic/apic.c:1150
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
 </IRQ>
RIP: 0010:default_idle+0x1f/0x30 arch/x86/kernel/process.c:573
Code: 90 90 90 90 90 90 90 90 90 90 90 e8 5b f4 e5 fd bf 01 00 00 00 89 c6 e8 9f c6 e3 fc e9 07 00 00 00 0f 00 2d 23 d2 60 00 fb f4 <e8> 3c f4 e5 fd bf ff ff ff ff 89 c6 e9 80 c6 e3 fc 41 57 41 56 53
RSP: 0018:ffffffff85e07d18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffffffff85e18a80 RCX: ffffffff85e18a80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffffff85e07e20 R08: ffffffff822b8ef0 R09: fffffbfff0bc3151
R10: fffffbfff0bc3151 R11: 0000000000000000 R12: ffffffff86471d60
R13: 1ffffffff0bc3150 R14: dffffc0000000000 R15: 0000000000000000
 default_idle_call kernel/sched/idle.c:94 [inline]
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x229/0x600 kernel/sched/idle.c:264
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:356
 start_kernel+0x710/0x85c init/main.c:1047
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Modules linked in:
CR2: ffffffff81a1dae2
---[ end trace 811d8cfbacdbf2db ]---
RIP: 0010:__hlist_del include/linux/list.h:764 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers+0x14f/0x410 kernel/time/timer.c:1450
Code: fb 3d 00 4d 89 3c 24 4d 85 ff 74 2f e8 da 2d 0f 00 49 83 c7 08 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 d1 fb 3d 00 <4d> 89 27 eb 11 66 66 2e 0f 1f 84 00 00 00 00 00 90 e8 ab 2d 0f 00
RSP: 0018:ffff8881f6e09d10 EFLAGS: 00010046
RAX: 1ffffffff0343b5c RBX: dffffc0000000000 RCX: ffffffff85e18a80
RDX: 0000000000000102 RSI: 0000000000000004 RDI: ffff8881f6e09c80
RBP: 1ffff1103c401639 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed103edc1391 R11: 0000000000000004 R12: ffff8881f6e09e20
R13: 1ffff1103c401638 R14: ffff8881e200b1c8 R15: ffffffff81a1dae2
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff81a1dae2 CR3: 00000001ee02b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/04/09 04:22 android12-5.4 b98c912db9ec 6a81331a .config console log report info ci2-android-5-4-kasan BUG: unable to handle kernel paging request in expire_timers
2021/04/08 03:02 android12-5.4 46c5fdececa6 6a81331a .config console log report info ci2-android-5-4-kasan BUG: unable to handle kernel paging request in expire_timers
2021/01/06 20:22 android12-5.4 bfc2776fd9c4 fff20c29 .config console log report info ci2-android-5-4-kasan
* Struck through repros no longer work on HEAD.