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: 146d, last: 2h48m

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 58 at fs/io_uring.c:8802 io_ring_exit_work+0x24e/0x1600 fs/io_uring.c:8802
Modules linked in:
CPU: 0 PID: 58 Comm: kworker/u4:3 Not tainted 5.14.0-rc3-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+0x24e/0x1600 fs/io_uring.c:8802
Code: 30 11 00 00 48 8b 05 a1 28 81 09 31 ff 48 8b 2c 24 48 29 c5 48 89 ee e8 c0 0d 95 ff 48 85 ed 0f 89 a8 fe ff ff e8 d2 07 95 ff <0f> 0b e9 9c fe ff ff e8 c6 07 95 ff 48 c7 c2 80 80 29 90 48 c7 c6
RSP: 0018:ffffc900011e7b98 EFLAGS: 00010293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff8880153d0000 RSI: ffffffff81dfc8fe RDI: 0000000000000003
RBP: fffffffffffffffd R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81dfc8f0 R11: 0000000000000000 R12: fffffbfff16c1e30
R13: ffffed1006288494 R14: ffff888031442920 R15: ffff888031442000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7828dbf000 CR3: 000000000b68e000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Crashes (1166):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-upstream-kasan-gce-selinux-root	2021/07/30 11:54	upstream	7e96bf476270	c585c7b0	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/07/29 07:52	upstream	4010a528219e	9a4781d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/07/28 16:30	upstream	7d549995d4e0	17d6ab15	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/07/28 08:37	upstream	7d549995d4e0	17d6ab15	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/07/25 00:42	upstream	f0fddcec6b62	4d1b57d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-selinux-root	2021/07/24 14:56	upstream	f0fddcec6b62	4d1b57d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-selinux-root	2021/07/24 11:59	upstream	f0fddcec6b62	4d1b57d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/07/24 10:34	upstream	f0fddcec6b62	4d1b57d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/07/24 09:00	upstream	8baef6386baa	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/07/24 00:25	upstream	8baef6386baa	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/07/23 23:17	upstream	8baef6386baa	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/07/23 22:10	upstream	8baef6386baa	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/07/23 04:32	upstream	9bead1b58c4c	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/07/23 03:23	upstream	9bead1b58c4c	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/07/23 02:48	upstream	9bead1b58c4c	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/07/22 15:49	upstream	3d5895cd3517	302e51de	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/07/22 14:33	upstream	3d5895cd3517	302e51de	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/07/22 13:10	upstream	3d5895cd3517	302e51de	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/07/22 12:39	upstream	3d5895cd3517	302e51de	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce	2021/07/22 07:15	upstream	7b6ae471e541	29c3f20f	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-smack-root	2021/07/22 04:00	upstream	7b6ae471e541	29c3f20f	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-selinux-root	2021/07/22 02:51	upstream	7b6ae471e541	29c3f20f	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-root	2021/07/22 02:28	upstream	7b6ae471e541	29c3f20f	.config	log	report	info	WARNING in io_ring_exit_work
ci-qemu-upstream	2021/07/16 18:36	upstream	d936eb238744	f115ae98	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-kasan-gce-386	2021/07/22 05:22	upstream	7b6ae471e541	29c3f20f	.config	log	report	info	WARNING in io_ring_exit_work
ci-qemu-upstream-386	2021/07/16 22:17	upstream	d936eb238744	f115ae98	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/08/05 14:58	linux-next	8d4b477da1a8	7f7bb950	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/08/05 06:26	linux-next	8d4b477da1a8	7f7bb950	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/08/04 17:39	linux-next	8d4b477da1a8	b97d64c9	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/08/02 15:37	linux-next	8d4b477da1a8	6c236867	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/31 10:07	linux-next	8d4b477da1a8	6c236867	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/30 20:15	linux-next	8d4b477da1a8	6c236867	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/30 18:51	linux-next	8d4b477da1a8	6c236867	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/30 01:38	linux-next	4ccc9e2db7ac	c585c7b0	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/29 17:07	linux-next	4ccc9e2db7ac	b44001ce	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/29 05:43	linux-next	5a4cee98ea75	9a4781d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/28 22:36	linux-next	42d0b5f52c9b	9a4781d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/28 21:25	linux-next	42d0b5f52c9b	9a4781d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/27 23:12	linux-next	42d0b5f52c9b	17d6ab15	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/27 21:49	linux-next	42d0b5f52c9b	17d6ab15	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/26 23:42	linux-next	2265c5286967	fd511809	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/26 07:36	linux-next	90d856e71443	fd511809	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/26 06:23	linux-next	90d856e71443	fd511809	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/26 02:56	linux-next	90d856e71443	4d1b57d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/26 02:32	linux-next	90d856e71443	4d1b57d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/24 09:27	linux-next	90d856e71443	4d1b57d4	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/23 14:05	linux-next	90d856e71443	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/23 11:20	linux-next	90d856e71443	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/23 09:49	linux-next	90d856e71443	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/23 01:14	linux-next	7468cbf5c917	bc5f1d88	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/22 10:13	linux-next	7468cbf5c917	29c3f20f	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/07/22 01:22	linux-next	b1347210b01d	29c3f20f	.config	log	report	info	WARNING in io_ring_exit_work
ci-upstream-linux-next-kasan-gce-root	2021/03/11 18:48	linux-next	b01d57bfdc41	c2ca1f2a	.config	log	report	info	WARNING in io_ring_exit_work
ci-qemu2-riscv64	2021/06/02 04:02	git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes	18a3c5f7abfd	032639db	.config	log	report	info	WARNING in io_ring_exit_work