syzbot


WARNING: ODEBUG bug in pm_qos_remove_request

Status: upstream: reported C repro on 2020/04/22 07:38
Reported-by: syzbot+5dd3d6ac1864b40f1e87@syzkaller.appspotmail.com
First crash: 1518d, last: 780d
Fix bisection the fix commit could be any of (bisect log):
  c10b57a567e4 Linux 4.14.176
  4139fb08c05f Linux 4.14.187
  
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING: ODEBUG bug in pm_qos_remove_request 3 576d 676d 0/1 auto-obsoleted due to no activity on 2023/03/20 15:40
Last patch testing requests (2)
Created Duration User Patch Repo Result
2023/02/27 05:32 12m retest repro linux-4.14.y report log
2022/11/08 19:30 10m retest repro linux-4.14.y report log
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2020/06/21 08:17 29m (5) bisect fix linux-4.14.y job log (2)
2020/05/22 07:47 30m bisect fix linux-4.14.y job log (0) log

Sample crash report:
audit: type=1400 audit(1587540914.383:8): avc:  denied  { execmem } for  pid=6335 comm="syz-executor147" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
ODEBUG: assert_init not available (active state 0) object type: timer_list hint:           (null)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6342 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6342 Comm: syz-executor147 Not tainted 4.14.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x13e/0x194 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x30 kernel/panic.c:547
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
RSP: 0018:ffff888097ff79d0 EFLAGS: 00010082
RAX: 0000000000000061 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff86ac07e0 RDI: ffffed1012ffef30
RBP: ffffffff86abba60 R08: 0000000000000061 R09: 0000000000000000
R10: ffff888097a1ab80 R11: ffff888097a1a300 R12: 0000000000000000
R13: 0000000000000000 R14: 1ffff11012ffef44 R15: ffff888216294e30
 debug_object_assert_init lib/debugobjects.c:656 [inline]
 debug_object_assert_init+0x22f/0x300 lib/debugobjects.c:627
 debug_timer_assert_init kernel/time/timer.c:707 [inline]
 debug_assert_init kernel/time/timer.c:755 [inline]
 del_timer+0x5d/0xe0 kernel/time/timer.c:1150
 try_to_grab_pending+0x261/0x610 kernel/workqueue.c:1225
 __cancel_work_timer+0x92/0x460 kernel/workqueue.c:2923
 pm_qos_remove_request+0x5e/0x460 kernel/power/qos.c:538
 snd_pcm_hw_free sound/core/pcm_native.c:790 [inline]
 snd_pcm_common_ioctl+0xa6d/0x1bf0 sound/core/pcm_native.c:2914
 snd_pcm_ioctl+0x6d/0xa0 sound/core/pcm_native.c:2993
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x445109
RSP: 002b:00007ffead54b368 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445109
RDX: 0000000000000000 RSI: 0000000000004112 RDI: 0000000000000004
RBP: 00000000006d0018 R08: 00000000004002e0 R09: 00000000004002e0
R10: 00000000004002e0 R11: 0000000000000246 R12: 00000000004022a0
R13: 0000000000402330 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/04/22 07:37 linux-4.14.y c10b57a567e4 2e44d63e .config console log report syz C ci2-linux-4-14
2022/04/30 08:14 linux-4.14.y e3a56aaade89 ad6b95d8 .config console log report info ci2-linux-4-14 WARNING: ODEBUG bug in pm_qos_remove_request
* Struck through repros no longer work on HEAD.