KCSAN: data-race in iput / writeback_sb

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in iput / writeback_sb_inodes (2) fs	6	1	1954d	1954d	0/29	closed as invalid on 2020/06/18 14:13
upstream	KCSAN: data-race in iput / writeback_sb_inodes (7) fs	6	1	1520d	1520d	0/29	auto-closed as invalid on 2021/09/29 17:35
upstream	KCSAN: data-race in iput / writeback_sb_inodes (6) fs	6	2	1592d	1599d	0/29	auto-closed as invalid on 2021/07/20 06:50
upstream	KCSAN: data-race in iput / writeback_sb_inodes (8) fs	6	1	1295d	1295d	0/29	auto-closed as invalid on 2022/05/13 10:29
upstream	KCSAN: data-race in iput / writeback_sb_inodes fs	6	1	2055d	2055d	0/29	auto-closed as invalid on 2020/05/18 05:32
upstream	KCSAN: data-race in iput / writeback_sb_inodes (11) fs	6	1	598d	598d	0/29	auto-obsoleted due to no activity on 2024/04/09 08:02
upstream	KCSAN: data-race in iput / writeback_sb_inodes (5) fs	6	4	1730d	1753d	0/29	auto-closed as invalid on 2021/03/04 09:19
upstream	KCSAN: data-race in iput / writeback_sb_inodes (4) fs	6	7	1817d	1782d	0/29	auto-closed as invalid on 2020/12/21 11:42
upstream	KCSAN: data-race in iput / writeback_sb_inodes (9) fs	6	2	1177d	1191d	0/29	auto-closed as invalid on 2022/09/08 05:08
upstream	KCSAN: data-race in iput / writeback_sb_inodes (10) fs	6	1	911d	911d	0/29	auto-obsoleted due to no activity on 2023/05/31 14:58

================================================================== BUG: KCSAN: data-race in iput / writeback_sb_inodes write to 0xffff8880bb7bdac0 of 8 bytes by task 12330 on cpu 0: inode_sync_complete fs/fs-writeback.c:1197 [inline] writeback_sb_inodes+0x9c9/0xe40 fs/fs-writeback.c:1744 wb_writeback+0x2b8/0x730 fs/fs-writeback.c:1892 wb_do_writeback+0x108/0x610 fs/fs-writeback.c:2037 wb_workfn+0xc8/0x460 fs/fs-writeback.c:2078 process_one_work+0x3e1/0x9a0 kernel/workqueue.c:2269 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415 kthread+0x20d/0x230 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 read to 0xffff8880bb7bdac0 of 8 bytes by task 8823 on cpu 1: iput+0x2e/0x550 fs/inode.c:1668 do_unlinkat+0x2c9/0x4d0 fs/namei.c:3895 __do_sys_unlink fs/namei.c:3936 [inline] __se_sys_unlink fs/namei.c:3934 [inline] __x64_sys_unlink+0x2c/0x30 fs/namei.c:3934 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8823 Comm: syz-executor.1 Not tainted 5.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================