KCSAN: data-race in fifo_open / wait_for

KCSAN: data-race in fifo_open / wait_for_partner
Status: moderation: reported on 2020/12/07 11:37
Reported-by: syzbot+d20383ba7e99a111910b@syzkaller.appspotmail.com
First crash: 428d, last: 2d07h

Sample crash report:

==================================================================
BUG: KCSAN: data-race in fifo_open / wait_for_partner

write to 0xffff888148716aec of 4 bytes by task 25757 on cpu 0:
 put_pipe_info fs/pipe.c:702 [inline]
 fifo_open+0x302/0x680 fs/pipe.c:1210
 do_dentry_open+0x52c/0x860 fs/open.c:822
 vfs_open+0x43/0x50 fs/open.c:957
 do_open fs/namei.c:3426 [inline]
 path_openat+0x17b8/0x1eb0 fs/namei.c:3559
 do_filp_open+0x105/0x220 fs/namei.c:3586
 do_sys_openat2+0xb5/0x2b0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_open fs/open.c:1236 [inline]
 __se_sys_open fs/open.c:1232 [inline]
 __x64_sys_open+0xe2/0x110 fs/open.c:1232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888148716aec of 4 bytes by task 25765 on cpu 1:
 pipe_lock_nested fs/pipe.c:80 [inline]
 pipe_lock fs/pipe.c:89 [inline]
 wait_for_partner+0xe0/0x1d0 fs/pipe.c:1077
 fifo_open+0x500/0x680 fs/pipe.c:1144
 do_dentry_open+0x52c/0x860 fs/open.c:822
 vfs_open+0x43/0x50 fs/open.c:957
 do_open fs/namei.c:3426 [inline]
 path_openat+0x17b8/0x1eb0 fs/namei.c:3559
 do_filp_open+0x105/0x220 fs/namei.c:3586
 do_sys_openat2+0xb5/0x2b0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_open fs/open.c:1236 [inline]
 __se_sys_open fs/open.c:1232 [inline]
 __x64_sys_open+0xe2/0x110 fs/open.c:1232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000002 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 25765 Comm: syz-executor.2 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (49):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/12/03 16:02	upstream	5f58da2befa5	c7c20675	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/11/12 16:03	upstream	5833291ab6de	75b04091	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/10/24 23:53	upstream	6c62666d8879	4f0000ee	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/09/23 06:52	upstream	58e2cf5d7946	8cac236e	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/09/16 08:30	upstream	ff1ffd71d5f0	07e953c1	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/08/14 00:31	upstream	f8e6dfc64f61	2489ab88	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/07/26 02:43	upstream	ff1176468d36	4d1b57d4	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/07/14 07:53	upstream	40226a3d96ef	484502bd	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/07/10 17:30	upstream	3dbdb38e2869	8f5a7b8c	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/06/26 15:52	upstream	b7050b242430	9d2ab5df	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/06/22 21:00	upstream	0c18f29aae7c	aba2b2fb	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/06/14 09:49	upstream	009c9aa5be65	1ba81399	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/05/21 15:34	upstream	79a106fc6585	3c7fef33	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/05/06 11:25	upstream	8404c9fbc84b	06c27ff5	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/05/03 05:07	upstream	9ccce092fc64	77e2b668	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/04/30 21:47	upstream	65c61de9d090	77e2b668	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/04/26 23:56	upstream	9f4ad9e425a1	8ee2dea6	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/04/21 08:19	upstream	1fe5501ba1ab	95777977	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/04/18 10:10	upstream	c98ff1d013d2	7e2b734b	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/04/16 18:51	upstream	2f7b98d1e55c	7e2b734b	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/03/23 08:52	upstream	84196390620a	8092f30d	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/03/10 07:18	upstream	05a59d79793d	26967e35	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/03/08 11:25	upstream	144c79ef3353	09fbf400	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/02/01 15:41	upstream	1048ba83fb1c	e6b95f32	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/01/27 18:40	upstream	2ab38c17aac1	a57db36f	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/01/25 22:07	upstream	f8ad8187c3b5	52e37319	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/01/23 15:16	upstream	fe75a21824e7	52e37319	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/01/21 15:14	upstream	9791581c049c	d4f4eca5	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/01/20 11:35	upstream	45dfb8a5659a	d4f4eca5	.config	log	report	info	KCSAN: data-race in fifo_open / wait_for_partner
ci2-upstream-kcsan-gce	2021/01/13 22:42	upstream	65f0d2414b70	a945f0a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/09 02:50	upstream	6279d812eab6	c104d4a3	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/06 03:31	upstream	6207214a70bf	b1c228e1	.config	log	report	info
ci2-upstream-kcsan-gce	2021/01/04 09:31	upstream	e71ba9452f0b	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/31 16:51	upstream	f6e1ea196492	79264ae3	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/29 17:00	upstream	dea8dcf2a9fa	80910769	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/23 17:35	upstream	614cb5894306	c2c1d1dd	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/14 19:07	upstream	2c85ebc57b3e	97183ed7	.config	log	report	info
ci2-upstream-kcsan-gce	2020/12/03 00:53	upstream	3bb61aa61828	8c9190ef	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/30 19:30	upstream	b65054597872	76831598	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/27 00:47	upstream	4df910620beb	5018c946	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/24 22:17	upstream	80145ac2f739	e34b696c	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/20 11:42	upstream	4d02da974ea8	0767f13f	.config	log	report	info
ci2-upstream-kcsan-gce	2020/11/15 06:15	upstream	e28c0d7c92c8	1bf9a662	.config	log	report	info
ci2-upstream-kcsan-gce	2020/10/26 08:59	upstream	3650b228f83a	a1839e81	.config	log	report	info
ci2-upstream-kcsan-gce	2020/10/25 20:50	upstream	986b9eacb259	a1839e81	.config	log	report	info
ci2-upstream-kcsan-gce	2020/10/15 11:15	upstream	3e4fb4346c78	63869021	.config	log	report	info
ci2-upstream-kcsan-gce	2020/10/14 10:46	upstream	b5fc7a89e58b	fc7735a2	.config	log	report	info
ci2-upstream-kcsan-gce	2020/10/04 16:44	upstream	22fbc037cd32	5ef9c291	.config	log	report	info
ci2-upstream-kcsan-gce	2020/10/03 04:23	upstream	d3d45f8220d6	2653fa43	.config	log	report	info