WARNING in cancel_delayed

WARNING in cancel_delayed_work
Status: upstream: reported C repro on 2020/07/31 03:13
Reported-by: syzbot+35e70efb794757d7e175@syzkaller.appspotmail.com
First crash: 265d, last: 8h11m

Cause bisection: introduced by (bisect log) :
commit fbd05e4a6e82fd573d3aa79e284e424b8d78c149
Author: Luca Coelho <luciano.coelho@intel.com>
Date: Thu Sep 15 15:15:09 2016 +0000

cfg80211: add helper to find an IE that matches a byte-array

Crash: no output from test machine (log)
Repro: C syz .config

Sample crash report:

------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 0 PID: 6849 at lib/debugobjects.c:488 debug_print_object lib/debugobjects.c:485 [inline]
WARNING: CPU: 0 PID: 6849 at lib/debugobjects.c:488 debug_object_assert_init+0x1fa/0x250 lib/debugobjects.c:870
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6849 Comm: syz-executor864 Not tainted 5.9.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1f0/0x31e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:debug_print_object lib/debugobjects.c:485 [inline]
RIP: 0010:debug_object_assert_init+0x1fa/0x250 lib/debugobjects.c:870
Code: e8 9b 19 10 fe 4c 8b 45 00 48 c7 c7 63 99 15 89 48 c7 c6 5d 98 15 89 48 c7 c2 42 3e 2d 89 31 c9 49 89 d9 31 c0 e8 76 e6 a1 fd <0f> 0b ff 05 da 8a ea 05 48 83 c5 38 48 89 e8 48 c1 e8 03 42 80 3c
RSP: 0018:ffffc900052f7840 EFLAGS: 00010046
RAX: 70f07cea71b7be00 RBX: 0000000000000000 RCX: ffff8880a86d8440
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffffff89502bc0 R08: ffffffff815e2109 R09: ffffed1015d041c3
R10: ffffed1015d041c3 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880a31bc200 R14: 0000000000000002 R15: ffffffff8b9f6688
 debug_timer_assert_init kernel/time/timer.c:742 [inline]
 debug_assert_init kernel/time/timer.c:787 [inline]
 del_timer+0x2f/0x390 kernel/time/timer.c:1205
 try_to_grab_pending+0xba/0x9f0 kernel/workqueue.c:1249
 __cancel_work kernel/workqueue.c:3221 [inline]
 cancel_delayed_work+0x37/0x2b0 kernel/workqueue.c:3250
 l2cap_clear_timer include/net/bluetooth/l2cap.h:879 [inline]
 l2cap_chan_del+0x5bf/0x760 net/bluetooth/l2cap_core.c:661
 l2cap_chan_close+0x7bf/0xae0 net/bluetooth/l2cap_core.c:823
 l2cap_sock_shutdown+0x39f/0x700 net/bluetooth/l2cap_sock.c:1339
 l2cap_sock_release+0x63/0x190 net/bluetooth/l2cap_sock.c:1382
 __sock_release net/socket.c:596 [inline]
 sock_close+0xd8/0x260 net/socket.c:1277
 __fput+0x34f/0x7b0 fs/file_table.c:281
 task_work_run+0x137/0x1c0 kernel/task_work.c:141
 exit_task_work include/linux/task_work.h:25 [inline]
 do_exit+0x5f3/0x1f20 kernel/exit.c:806
 do_group_exit+0x161/0x2d0 kernel/exit.c:903
 get_signal+0x13bb/0x1d50 kernel/signal.c:2757
 arch_do_signal+0x33/0x610 arch/x86/kernel/signal.c:811
 exit_to_user_mode_loop kernel/entry/common.c:135 [inline]
 exit_to_user_mode_prepare+0x8d/0x1b0 kernel/entry/common.c:166
 syscall_exit_to_user_mode+0x5e/0x1a0 kernel/entry/common.c:241
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x446d99
Code: Bad RIP value.
RSP: 002b:00007ffe6690c978 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d99
RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000004
RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000ab7850
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Fix bisection attempts:
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-smack-root	2021/01/13 09:23	upstream	e609571b	1da71ab0	.config	log	report	syz	C

Crashes (419):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-smack-root	2020/08/22 22:31	upstream	c3d8f220	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/05 06:41	upstream	c0842fbc	80a06902	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/02 13:18	upstream	ac3a0c84	63a73341	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/07/31 00:48	upstream	83bdc727	8df85ed9	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/07/31 00:28	upstream	83bdc727	8df85ed9	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2021/04/21 16:34	upstream	1fe5501b	95777977	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/21 12:38	upstream	1fe5501b	95777977	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/21 06:52	upstream	1fe5501b	c0ced557	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/20 21:01	upstream	7af08140	c0ced557	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/20 16:51	upstream	7af08140	c0ced557	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/20 09:35	upstream	7af08140	4285c989	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/20 06:37	upstream	7af08140	4285c989	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/20 04:20	upstream	7af08140	4285c989	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/19 17:43	upstream	bf05bf16	50f523d7	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/19 09:22	upstream	bf05bf16	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/18 23:51	upstream	c98ff1d0	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/18 23:51	upstream	c98ff1d0	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/18 22:27	upstream	c98ff1d0	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/18 20:26	upstream	c98ff1d0	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/18 18:44	upstream	c98ff1d0	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/18 09:10	upstream	194cf482	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/18 02:14	upstream	194cf482	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 20:35	upstream	9cdbf646	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 17:20	upstream	9cdbf646	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 16:07	upstream	9cdbf646	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 14:56	upstream	9cdbf646	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 13:51	upstream	9cdbf646	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 13:42	upstream	9cdbf646	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 07:24	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 02:58	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/17 01:00	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/16 23:38	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/16 22:22	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/16 11:45	upstream	7e25f40e	c59079a6	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/16 09:51	upstream	7e25f40e	c59079a6	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/16 02:34	upstream	7e25f40e	c59079a6	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/16 01:12	upstream	7e25f40e	c59079a6	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 16:10	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 14:27	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 14:05	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 12:35	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 09:24	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 08:15	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 05:43	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/15 05:25	upstream	7f75285c	fcdb12ba	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/14 18:22	upstream	50987bec	3134b37f	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/14 16:02	upstream	50987bec	3134b37f	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/14 07:05	upstream	eebe426d	a184b83e	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/14 06:01	upstream	eebe426d	a184b83e	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/14 05:53	upstream	eebe426d	a184b83e	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/14 03:58	upstream	eebe426d	a184b83e	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/14 02:54	upstream	eebe426d	a184b83e	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/13 18:28	upstream	89698bec	bfeda1b1	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/13 12:36	upstream	89698bec	bfeda1b1	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/13 08:40	upstream	89698bec	bfeda1b1	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/13 07:20	upstream	89698bec	bfeda1b1	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/04/13 02:31	upstream	d434405a	bfeda1b1	.config	log	report			info	WARNING in cancel_delayed_work
ci-upstream-kasan-gce-smack-root	2021/01/15 09:46	upstream	5ee88057	65a7a854	.config	log	report			info