KCSAN: data-race in iput / writeback_sb

similar bugs (7):
Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in iput / writeback_sb_inodes (2)	1	706d	706d	0/22	closed as invalid on 2020/06/18 14:13
upstream	KCSAN: data-race in iput / writeback_sb_inodes (3)	1	687d	687d	0/22	auto-closed as invalid on 2020/08/11 19:26
upstream	KCSAN: data-race in iput / writeback_sb_inodes (7)	1	273d	273d	0/22	auto-closed as invalid on 2021/09/29 17:35
upstream	KCSAN: data-race in iput / writeback_sb_inodes (6)	2	344d	351d	0/22	auto-closed as invalid on 2021/07/20 06:50
upstream	KCSAN: data-race in iput / writeback_sb_inodes (8)	1	47d	47d	0/22	auto-closed as invalid on 2022/05/13 10:29
upstream	KCSAN: data-race in iput / writeback_sb_inodes (5)	4	482d	506d	0/22	auto-closed as invalid on 2021/03/04 09:19
upstream	KCSAN: data-race in iput / writeback_sb_inodes (4)	7	570d	534d	0/22	auto-closed as invalid on 2020/12/21 11:42

similar bugs (7):

upstream

KCSAN: data-race in iput / writeback_sb_inodes (2)

706d

0/22

closed as invalid on 2020/06/18 14:13

upstream

KCSAN: data-race in iput / writeback_sb_inodes (3)

687d

0/22

auto-closed as invalid on 2020/08/11 19:26

upstream

KCSAN: data-race in iput / writeback_sb_inodes (7)

273d

0/22

auto-closed as invalid on 2021/09/29 17:35

upstream

KCSAN: data-race in iput / writeback_sb_inodes (6)

344d

351d

0/22

auto-closed as invalid on 2021/07/20 06:50

upstream

KCSAN: data-race in iput / writeback_sb_inodes (8)

47d

0/22

auto-closed as invalid on 2022/05/13 10:29

upstream

KCSAN: data-race in iput / writeback_sb_inodes (5)

482d

506d

0/22

auto-closed as invalid on 2021/03/04 09:19

upstream

KCSAN: data-race in iput / writeback_sb_inodes (4)

570d

534d

0/22

auto-closed as invalid on 2020/12/21 11:42

==================================================================
BUG: KCSAN: data-race in iput / writeback_sb_inodes

write to 0xffff8880af0fc1c0 of 8 bytes by task 1002 on cpu 1:
 writeback_sb_inodes+0x3bd/0xa10 fs/fs-writeback.c:1705
 wb_writeback+0x1f9/0x6a0 fs/fs-writeback.c:1892
 wb_do_writeback fs/fs-writeback.c:2037 [inline]
 wb_workfn+0x215/0x970 fs/fs-writeback.c:2078
 process_one_work+0x424/0x930 kernel/workqueue.c:2264
 worker_thread+0x9a/0x7e0 kernel/workqueue.c:2410
 kthread+0x1cb/0x1f0 kernel/kthread.c:255
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

read to 0xffff8880af0fc1c0 of 8 bytes by task 7888 on cpu 0:
 iput+0x4d/0x4d0 fs/inode.c:1587
 do_unlinkat+0x388/0x550 fs/namei.c:4143
 __do_sys_unlink fs/namei.c:4184 [inline]
 __se_sys_unlink fs/namei.c:4182 [inline]
 __x64_sys_unlink+0x38/0x50 fs/namei.c:4182
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7888 Comm: syz-executor.0 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================