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	2126d	2126d	0/29	closed as invalid on 2020/06/18 14:13
upstream	KCSAN: data-race in iput / writeback_sb_inodes (3) fs	6	1	2107d	2107d	0/29	auto-closed as invalid on 2020/08/11 19:26
upstream	KCSAN: data-race in iput / writeback_sb_inodes (7) fs	6	1	1693d	1693d	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	1764d	1771d	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	1467d	1467d	0/29	auto-closed as invalid on 2022/05/13 10:29
upstream	KCSAN: data-race in iput / writeback_sb_inodes fs	6	1	2227d	2227d	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	770d	770d	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	1902d	1926d	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	1990d	1954d	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	1349d	1364d	0/29	auto-closed as invalid on 2022/09/08 05:08

================================================================== BUG: KCSAN: data-race in iput / writeback_sb_inodes write to 0xffff88810aa38ae0 of 8 bytes by task 15370 on cpu 1: writeback_sb_inodes+0x2db/0xaa0 fs/fs-writeback.c:1883 __writeback_inodes_wb+0x9a/0x1a0 fs/fs-writeback.c:1965 wb_writeback+0x24d/0x6c0 fs/fs-writeback.c:2070 wb_check_start_all fs/fs-writeback.c:2192 [inline] wb_do_writeback fs/fs-writeback.c:2218 [inline] wb_workfn+0x4ea/0x8d0 fs/fs-writeback.c:2251 process_one_work+0x3e6/0x750 kernel/workqueue.c:2390 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2537 kthread+0x1d7/0x210 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 read to 0xffff88810aa38ae0 of 8 bytes by task 3067 on cpu 0: iput+0x32/0x5b0 fs/inode.c:1764 dentry_unlink_inode+0x22a/0x240 fs/dcache.c:401 d_delete+0x76/0xf0 fs/dcache.c:2565 d_delete_notify include/linux/fsnotify.h:259 [inline] vfs_rmdir+0x1a0/0x2f0 fs/namei.c:4134 do_rmdir+0x18e/0x300 fs/namei.c:4180 __do_sys_unlinkat fs/namei.c:4358 [inline] __se_sys_unlinkat fs/namei.c:4352 [inline] __x64_sys_unlinkat+0xa4/0xb0 fs/namei.c:4352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000000020007 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3067 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller-04626-g0cfd8703e7da #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 ==================================================================