KCSAN: data-race in __lru_add_drain_all / __pagevec_lru

KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
Status: moderation: reported on 2021/12/15 21:37
Reported-by: syzbot+a5ff8b97fcf389a296c4@syzkaller.appspotmail.com
First crash: 260d, last: 5d04h

Sample crash report:

==================================================================
BUG: KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add

write to 0xffff888237d27998 of 1 bytes by task 8427 on cpu 1:
 pagevec_reinit include/linux/pagevec.h:57 [inline]
 __pagevec_lru_add+0x243/0x270 mm/swap.c:1076
 folio_add_lru+0x11a/0x160 mm/swap.c:469
 lru_cache_add+0x37/0x50 mm/folio-compat.c:108
 lru_cache_add_inactive_or_unevictable+0x46/0x140 mm/swap.c:500
 wp_page_copy+0x779/0x10e0 mm/memory.c:3070
 do_wp_page+0x4fb/0xa80
 handle_pte_fault mm/memory.c:4592 [inline]
 __handle_mm_fault mm/memory.c:4709 [inline]
 handle_mm_fault+0x975/0x1590 mm/memory.c:4807
 do_user_addr_fault+0x617/0xb90 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1484 [inline]
 exc_page_fault+0x91/0x290 arch/x86/mm/fault.c:1540
 asm_exc_page_fault+0x1e/0x30
 __put_user_nocheck_4+0x3/0x11
 schedule_tail+0x41/0x50 kernel/sched/core.c:4926
 ret_from_fork+0x8/0x30

read to 0xffff888237d27998 of 1 bytes by task 1848 on cpu 0:
 pagevec_count include/linux/pagevec.h:62 [inline]
 __lru_add_drain_all+0x12c/0x3e0 mm/swap.c:835
 lru_add_drain_all+0xc/0x10 mm/swap.c:857
 invalidate_bdev+0x56/0x80 block/bdev.c:88
 ext4_put_super+0x408/0x610 fs/ext4/super.c:1272
 generic_shutdown_super+0xdf/0x250 fs/super.c:465
 kill_block_super+0x4a/0x90 fs/super.c:1397
 deactivate_locked_super+0x6a/0xb0 fs/super.c:335
 deactivate_super+0x85/0x90 fs/super.c:366
 cleanup_mnt+0x267/0x2d0 fs/namespace.c:1143
 __cleanup_mnt+0x15/0x20 fs/namespace.c:1150
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300
 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0f -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1848 Comm: syz-executor.3 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (57):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2022/01/19 22:25	upstream	1d1df41c5a33	5da9499f	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2022/01/14 17:57	upstream	871bfa02d08d	53e00b45	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/29 10:32	upstream	e7c124bd0463	76c8cf06	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/26 00:01	upstream	e2ae0d4a6b0b	6caa12e4	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/25 04:16	upstream	b927dfc67d05	6caa12e4	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/20 12:13	upstream	a7904a538933	021b36cb	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/16 23:31	upstream	fa36bbe6d43f	8dd6a5e3	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/12 21:49	upstream	90d9fbc16b69	49ca1f59	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/11 18:13	upstream	6f513529296f	49ca1f59	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/12/07 01:54	upstream	f80ef9e49fdf	0230ba3e	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/29 23:49	upstream	d58071a8a76d	d0830353	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/28 13:25	upstream	3498e7f2bb41	63eeac02	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/26 08:51	upstream	a4849f6000e2	63eeac02	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/21 19:21	upstream	923dcc5eb0c1	4eb20a4e	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/08 22:06	upstream	e851dfae4371	d29682f1	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/07 12:13	upstream	b5013d084e03	4c1be0be	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/03 09:12	upstream	56d33754481f	17f3edd2	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/11/01 23:24	upstream	e66435936756	098b5d53	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/10/14 02:03	upstream	348949d9a444	5462d470	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/10/08 09:02	upstream	1da38549dd64	efe0f24d	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/10/06 23:37	upstream	60a9483534ed	62ee0987	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/10/01 16:18	upstream	4de593fb965f	cc80db95	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/10/01 00:52	upstream	4de593fb965f	0f01403d	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/29 14:36	upstream	a4e6f95a891a	e08fe937	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/29 09:18	upstream	a4e6f95a891a	d82cb927	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/25 01:38	upstream	7d42e9818258	8cac236e	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/21 17:45	upstream	d9fb678414c0	169724fe	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/20 21:37	upstream	e8f71f89236e	af796c18	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/20 04:07	upstream	20621d2f27a0	70b76c1d	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/17 04:17	upstream	bdb575f87217	5b989942	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/15 22:21	upstream	80be5998ad63	07e953c1	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/12 17:24	upstream	78e709522d2c	3ce60af8	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/12 01:36	upstream	c605c39677b9	3ce60af8	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/06 15:04	upstream	27151f177827	6ca60148	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/09/03 03:43	upstream	7ba88a2a09f4	f62a5829	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/08/31 18:47	upstream	b91db6a0b52e	7eb7e152	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/08/28 07:28	upstream	64b4fc45bea6	d5a29e53	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/08/19 15:59	upstream	d6d09a694205	e2da378b	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/08/18 21:15	upstream	d6d09a694205	a2fe1cb5	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/08/12 09:11	upstream	1746f4db5135	6972b106	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/08/06 01:48	upstream	e04480920d1e	d2d6e680	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/08/04 22:57	upstream	251a1524293d	b97d64c9	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/07/31 00:29	upstream	4669e13cd67f	6c236867	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/07/27 18:50	upstream	ff1176468d36	17d6ab15	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/07/15 21:56	upstream	dd9c7df94c1b	f115ae98	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/07/02 15:25	upstream	3dbdb38e2869	658ebc66	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/07/02 02:44	upstream	e058a84bfddc	658ebc66	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/06/29 15:43	upstream	c54b245d0118	9d2ab5df	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/06/29 15:31	upstream	c54b245d0118	9d2ab5df	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/06/20 21:53	upstream	cba5e97280f5	aba2b2fb	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/06/19 02:07	upstream	b1edae0d5f2e	aba2b2fb	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/06/11 10:05	upstream	06af8679449d	1ba81399	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/06/09 04:22	upstream	4c8684fe555e	5c2fe346	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/05/21 04:14	upstream	ba816d3c265c	3c7fef33	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/05/17 11:55	upstream	d07f6ca923ea	a2eb125d	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/05/12 17:57	upstream	88b06399c9c7	86294427	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add
ci2-upstream-kcsan-gce	2021/05/10 00:52	upstream	9819f682e48c	bc5434be	.config	log	report	info	KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add