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WARNING in __debug_object_init

Status: public: reported C repro on 2019/04/12 00:00
Reported-by: syzbot+c31bf57e73d81cfa6215@syzkaller.appspotmail.com
First crash: 2501d, last: 2025d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
syzbot rcu/debugobjects warning 6 (6) 2018/03/26 17:38
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __debug_object_init (2) bpf net C 1780 2220d 2225d 0/28 closed as invalid on 2018/10/24 02:07
upstream WARNING in __debug_object_init kernel C 192 2422d 2432d 5/28 fixed on 2018/05/08 18:30
upstream WARNING in __debug_object_init (3) bpf net C 1557 2215d 2216d 11/28 fixed on 2019/01/21 10:28

Sample crash report:
audit: type=1400 audit(1554253972.395:5): avc:  denied  { wake_alarm } for  pid=2086 comm="syz-executor785" capability=35  scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=capability2 permissive=1
ODEBUG: object 0000000046f58444 is on stack 00000000f2fa99a8, but NOT annotated.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 2086 at lib/debugobjects.c:303 debug_object_is_on_stack lib/debugobjects.c:303 [inline]
WARNING: CPU: 1 PID: 2086 at lib/debugobjects.c:303 __debug_object_init.cold+0x6b/0x2fd lib/debugobjects.c:329
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 2086 Comm: syz-executor785 Not tainted 4.9.166+ #35
 ffff8801ce537a58 ffffffff81b4ef81 0000000000000000 ffffffff82a39ba0
 00000000ffffffff 0000000000000001 0000000000000009 ffff8801ce537b38
 ffffffff813f91aa 0000000041b58ab3 ffffffff82e2ec1a ffffffff813f8fd1
Call Trace:
 [<000000006bb18fc2>] __dump_stack lib/dump_stack.c:15 [inline]
 [<000000006bb18fc2>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<000000001bae0e28>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<00000000b5d0e9a1>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000619aa6e8>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<000000001f6a7f94>] debug_object_is_on_stack lib/debugobjects.c:303 [inline]
 [<000000001f6a7f94>] __debug_object_init.cold+0x6b/0x2fd lib/debugobjects.c:329
 [<000000002b3fe020>] debug_object_init+0x16/0x20 lib/debugobjects.c:366
 [<00000000ee5bfc48>] debug_hrtimer_init kernel/time/hrtimer.c:393 [inline]
 [<00000000ee5bfc48>] debug_init kernel/time/hrtimer.c:438 [inline]
 [<00000000ee5bfc48>] hrtimer_init+0x2a/0x2f0 kernel/time/hrtimer.c:1165
 [<00000000b676d1d8>] alarm_init kernel/time/alarmtimer.c:321 [inline]
 [<00000000b676d1d8>] alarm_timer_nsleep+0x160/0x4e0 kernel/time/alarmtimer.c:783
 [<0000000088465605>] SYSC_clock_nanosleep kernel/time/posix-timers.c:1128 [inline]
 [<0000000088465605>] SyS_clock_nanosleep+0x1be/0x280 kernel/time/posix-timers.c:1110
 [<000000007e21a586>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<00000000268aca1e>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (8315):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/03 01:16 https://android.googlesource.com/kernel/common android-4.9 5f5c16578d2b dfd3394d .config console log report syz C ci-android-49-kasan-gce-root
2019/02/12 01:24 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba 65a0d619 .config console log report syz C ci-android-49-kasan-gce-root
2018/10/27 22:49 https://android.googlesource.com/kernel/common android-4.9 4ba3f69128be 8efba39a .config console log report syz C ci-android-49-kasan-gce-root
2018/09/11 11:32 https://android.googlesource.com/kernel/common android-4.9 a8c1ea6c63ed 8c88323f .config console log report syz C ci-android-49-kasan-gce-root
2018/09/07 23:20 https://android.googlesource.com/kernel/common android-4.9 dcae9fa1319b 69cfeb80 .config console log report syz C ci-android-49-kasan-gce-root
2018/08/03 15:28 https://android.googlesource.com/kernel/common android-4.9 8b21e85d919c cc4f6d0a .config console log report syz C ci-android-49-kasan-gce-root
2018/03/22 10:48 https://android.googlesource.com/kernel/common android-4.9 960923fdc278 95c88d7a .config console log report syz C ci-android-49-kasan-gce
2019/05/07 14:47 https://android.googlesource.com/kernel/common android-4.9 a2952deabe5a d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/07 13:43 https://android.googlesource.com/kernel/common android-4.9 a2952deabe5a d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/05 12:02 https://android.googlesource.com/kernel/common android-4.9 336c47db9e07 d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/04 17:37 https://android.googlesource.com/kernel/common android-4.9 336c47db9e07 d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/04 14:50 https://android.googlesource.com/kernel/common android-4.9 336c47db9e07 d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/04 06:31 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/04 00:45 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/03 21:51 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/03 19:46 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b d28f4ce5 .config console log report ci-android-49-kasan-gce-root
2019/05/03 17:39 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b 1bfa09b9 .config console log report ci-android-49-kasan-gce-root
2019/05/03 14:18 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b 1bfa09b9 .config console log report ci-android-49-kasan-gce-root
2019/05/03 11:22 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b 1bfa09b9 .config console log report ci-android-49-kasan-gce-root
2019/05/03 04:24 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b e9039493 .config console log report ci-android-49-kasan-gce-root
2019/05/02 20:40 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b e9039493 .config console log report ci-android-49-kasan-gce-root
2019/05/02 14:57 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 7516d9fa .config console log report ci-android-49-kasan-gce-root
2019/05/02 11:55 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 7516d9fa .config console log report ci-android-49-kasan-gce-root
2019/05/02 03:12 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 7516d9fa .config console log report ci-android-49-kasan-gce-root
2019/05/02 01:08 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 7516d9fa .config console log report ci-android-49-kasan-gce-root
2019/05/01 21:05 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 7516d9fa .config console log report ci-android-49-kasan-gce-root
2019/05/01 20:04 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 7516d9fa .config console log report ci-android-49-kasan-gce-root
2019/05/01 17:11 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 618456b4 .config console log report ci-android-49-kasan-gce-root
2019/05/01 15:01 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 618456b4 .config console log report ci-android-49-kasan-gce-root
2019/05/01 12:57 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 618456b4 .config console log report ci-android-49-kasan-gce-root
2019/05/01 11:20 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 618456b4 .config console log report ci-android-49-kasan-gce-root
2019/05/01 04:58 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 618456b4 .config console log report ci-android-49-kasan-gce-root
2019/04/30 14:21 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 20f16bef .config console log report ci-android-49-kasan-gce-root
2019/04/30 13:14 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 20f16bef .config console log report ci-android-49-kasan-gce-root
2019/04/30 09:44 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 20f16bef .config console log report ci-android-49-kasan-gce-root
2019/04/30 06:51 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 20f16bef .config console log report ci-android-49-kasan-gce-root
2019/04/30 05:09 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/30 04:02 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/29 23:50 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/29 18:16 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/29 14:28 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/29 09:02 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/29 03:33 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/29 00:40 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/28 23:39 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/28 21:50 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/28 18:18 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/28 16:39 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/28 13:53 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/28 12:38 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2018/08/29 03:22 https://android.googlesource.com/kernel/common android-4.9 09eb2ba5ed0c b771b17e .config console log report ci-android-49-kasan-gce
2018/08/29 10:23 https://android.googlesource.com/kernel/common android-4.9 09eb2ba5ed0c 53ff8784 .config console log report ci-android-49-kasan-gce-386
* Struck through repros no longer work on HEAD.