KCSAN: data-race in __blkdev_put / __blkdev

KCSAN: data-race in __blkdev_put / __blkdev_put
Status: moderation: reported on 2020/08/03 01:35
Reported-by: syzbot+6d19edc6b879bb3188b9@syzkaller.appspotmail.com
First crash: 404d, last: 27d

Sample crash report:

==================================================================
BUG: KCSAN: data-race in __blkdev_put / __blkdev_put

write to 0xffff8881013650a0 of 4 bytes by task 13035 on cpu 1:
 __blkdev_put+0x122/0x460 fs/block_dev.c:1573
 blkdev_put+0x23e/0x2c0 fs/block_dev.c:1636
 blkdev_close+0x47/0x50 fs/block_dev.c:1644
 __fput+0x25b/0x4e0 fs/file_table.c:280
 ____fput+0x11/0x20 fs/file_table.c:313
 task_work_run+0xae/0x130 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x156/0x190 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302
 do_syscall_64+0x49/0x90 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881013650a0 of 4 bytes by task 13031 on cpu 0:
 __blkdev_put+0x5a/0x460 fs/block_dev.c:1566
 __blkdev_put+0x3b9/0x460 fs/block_dev.c:1586
 blkdev_put+0x23e/0x2c0 fs/block_dev.c:1636
 blkdev_close+0x47/0x50 fs/block_dev.c:1644
 __fput+0x25b/0x4e0 fs/file_table.c:280
 ____fput+0x11/0x20 fs/file_table.c:313
 task_work_run+0xae/0x130 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x156/0x190 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302
 do_syscall_64+0x49/0x90 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000005 -> 0x00000003

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 13031 Comm: systemd-udevd Not tainted 5.13.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (393):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-kcsan-gce	2021/06/30 21:58	upstream	df04fbe8680b	38a885d1	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/30 11:48	upstream	007b350a5875	84fd4c77	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/29 23:19	upstream	c54b245d0118	a4fccb01	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/29 16:43	upstream	c54b245d0118	9d2ab5df	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/29 02:01	upstream	122fa8c58831	9d2ab5df	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/28 15:02	upstream	62fb9874f5da	9d2ab5df	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/27 22:16	upstream	b4b27b9eed8e	9d2ab5df	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/26 20:55	upstream	625acffd7ae2	9d2ab5df	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/26 08:26	upstream	b7050b242430	9d2ab5df	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/25 17:08	upstream	44db63d1ad8d	ae6bf8dd	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/25 11:55	upstream	44db63d1ad8d	0edbbe31	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/25 00:13	upstream	4a09d388f2ab	0edbbe31	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/24 08:33	upstream	7426cedc7dad	ec865f6a	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/23 20:50	upstream	7266f2030eb0	fe4ab389	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/22 23:19	upstream	0c18f29aae7c	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/22 04:00	upstream	a96bfed64c89	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/21 13:24	upstream	13311e74253f	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/20 23:59	upstream	cba5e97280f5	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/20 03:26	upstream	913ec3c22ef4	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/19 13:09	upstream	9ed13a17e38e	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/19 00:17	upstream	b1edae0d5f2e	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/18 07:53	upstream	fd0aa1a4567d	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/17 20:26	upstream	70585216fe77	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/17 06:18	upstream	6b00bc639f1f	aba2b2fb	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/16 19:38	upstream	6b00bc639f1f	c06f97ad	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/16 11:35	upstream	94f0b2d4a1d0	c06f97ad	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/16 06:02	upstream	94f0b2d4a1d0	990d3cbe	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/15 21:18	upstream	94f0b2d4a1d0	8022d7e3	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/15 13:12	upstream	009c9aa5be65	8022d7e3	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/14 11:48	upstream	009c9aa5be65	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/14 08:19	upstream	e4e453434a19	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/13 09:39	upstream	8ecfa36cd4db	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/12 13:52	upstream	ad347abe4a98	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/12 01:41	upstream	f21b807c3cf8	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/11 12:59	upstream	06af8679449d	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/11 01:13	upstream	f09eacca59d2	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/10 04:32	upstream	cd1245d75ce9	1ba81399	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/09 18:24	upstream	368094df48e6	84fe5d96	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/09 01:55	upstream	4c8684fe555e	5c2fe346	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/08 09:28	upstream	614124bea77e	5c2fe346	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/08 03:28	upstream	614124bea77e	b718257f	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/07 13:24	upstream	614124bea77e	e59537be	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/07 00:44	upstream	decad3e1d1ed	500c2339	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/06/06 02:08	upstream	f5b6eb1e0182	500c2339	.config	log	report	info	KCSAN: data-race in __blkdev_put / __blkdev_put
ci2-upstream-kcsan-gce	2021/01/17 04:17	upstream	54c6247d06f1	65a7a854	.config	log	report	info
ci2-upstream-kcsan-gce	2020/08/02 16:36	upstream	ac3a0c847296	96dd3623	.config	log	report
ci2-upstream-kcsan-gce	2020/08/01 12:31	upstream	7dc6fd0f3b84	8df85ed9	.config	log	report
ci2-upstream-kcsan-gce	2020/06/18 15:15	upstream	1b5044021070	3ea11d3f	.config	log	report