WARNING in io_ring_exit

WARNING in io_ring_exit_work
Status: upstream: reported on 2021/03/15 19:08
Reported-by: syzbot+00e15cda746c5bc70e24@syzkaller.appspotmail.com
First crash: 42d, last: 18h18m

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 47 at fs/io_uring.c:8596 io_ring_exit_work+0x3bd/0x12d0 fs/io_uring.c:8596
Modules linked in:
CPU: 0 PID: 47 Comm: kworker/u4:2 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x3bd/0x12d0 fs/io_uring.c:8596
Code: 80 3b 00 0f 85 9a 0c 00 00 48 8b 05 8d fc e3 09 4d 89 ec 31 ff 49 29 c4 4c 89 e6 e8 6d 08 97 ff 4d 85 e4 79 a6 e8 43 00 97 ff <0f> 0b eb 9d e8 3a 00 97 ff 4c 8b 7c 24 08 31 f6 49 bc 00 00 00 00
RSP: 0018:ffffc90000effb98 EFLAGS: 00010293
RAX: 0000000000000000 RBX: fffffbfff1781e30 RCX: 0000000000000000
RDX: ffff8880114b9c40 RSI: ffffffff81dcf50d RDI: 0000000000000003
RBP: ffff88806335e4e0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81dcf503 R11: 0000000000000000 R12: fffffffffffffffc
R13: 0000000100005c84 R14: ffff88806335e000 R15: ffff88806335e8b0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0543452000 CR3: 00000000209d5000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Crashes (77):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-upstream-kasan-gce	2021/04/22 23:04	upstream	90c911ad	590921a5	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/22 21:32	upstream	16fc44d6	590921a5	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/21 08:46	upstream	1fe5501b	95777977	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/20 13:17	upstream	7af08140	c0ced557	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/20 01:19	upstream	7af08140	4285c989	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/19 23:15	upstream	7af08140	4285c989	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/19 18:32	upstream	bf05bf16	50f523d7	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/19 11:48	upstream	bf05bf16	50f523d7	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/19 10:30	upstream	bf05bf16	50f523d7	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/18 17:33	upstream	c98ff1d0	7e2b734b	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/18 13:40	upstream	c98ff1d0	7e2b734b	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/18 10:19	upstream	c98ff1d0	7e2b734b	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/17 21:51	upstream	194cf482	7e2b734b	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/17 08:35	upstream	9cdbf646	7e2b734b	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/16 17:12	upstream	2f7b98d1	7e2b734b	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/16 12:36	upstream	7e25f40e	7e2b734b	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/16 09:58	upstream	7e25f40e	c59079a6	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/14 13:56	upstream	50987bec	3134b37f	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/14 11:10	upstream	50987bec	3134b37f	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/13 19:02	upstream	89698bec	a184b83e	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/13 04:49	upstream	89698bec	bfeda1b1	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/13 03:05	upstream	89698bec	bfeda1b1	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/11 23:13	upstream	7d900724	bfeda1b1	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/11 04:28	upstream	52e44129	bfeda1b1	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/11 03:12	upstream	52e44129	bfeda1b1	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/10 09:00	upstream	d4961772	bfeda1b1	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/09 20:02	upstream	17e7124a	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/09 16:13	upstream	4fa56ad0	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/09 04:34	upstream	4fa56ad0	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/09 01:59	upstream	4fa56ad0	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/08 13:16	upstream	454859c5	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/04/08 12:34	upstream	454859c5	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/04/08 09:07	upstream	3a229812	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-selinux-root	2021/04/08 07:21	upstream	3a229812	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/08 06:39	upstream	3a229812	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/07 23:34	upstream	3a229812	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/07 03:53	upstream	2d743660	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/07 01:17	upstream	2d743660	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/04/06 21:50	upstream	0a50438c	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/05 20:48	upstream	0a50438c	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/04/05 20:05	upstream	0a50438c	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/05 19:19	upstream	0a50438c	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/04 18:45	upstream	2023a53b	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/04 10:17	upstream	2023a53b	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/04 09:21	upstream	2023a53b	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/03 18:56	upstream	57fbdb15	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/04/03 04:13	upstream	d93a0d43	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/04/03 02:31	upstream	d93a0d43	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/04/01 20:33	upstream	ffd9fb54	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/04/01 18:51	upstream	ffd9fb54	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/04/01 05:01	upstream	d19cc4bf	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/03/31 13:14	upstream	5e46d1b7	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/03/30 22:24	upstream	2bb25b3a	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/03/30 13:27	upstream	1e43c377	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/03/29 21:24	upstream	1e43c377	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/03/29 13:23	upstream	a5e13c6d	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/03/29 12:56	upstream	a5e13c6d	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/03/26 23:21	upstream	db24726b	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/03/26 23:08	upstream	db24726b	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-386	2021/03/29 15:46	upstream	a5e13c6d	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-386	2021/03/29 14:36	upstream	a5e13c6d	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-386	2021/03/28 22:08	upstream	36a14638	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-386	2021/03/27 10:04	upstream	0f4498ce	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-386	2021/03/26 23:25	upstream	db24726b	a8529b82	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/04/08 13:39	linux-next	6145d80c	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/04/08 11:18	linux-next	5103a5be	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/04/07 13:30	linux-next	5103a5be	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/04/06 13:47	linux-next	9c54130c	6a81331a	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/03/11 18:48	linux-next	b01d57bf	c2ca1f2a	.config	log	report	info	WARNING in io_ring_exit_work