KCSAN: data-race in lookup_fast / vfs

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in lookup_fast / vfs_rename fs	2	1358d	1362d	0/26	auto-closed as invalid on 2020/09/04 03:18
upstream	KCSAN: data-race in lookup_fast / vfs_rename (4) fs	1	756d	756d	0/26	auto-closed as invalid on 2022/04/28 23:59
upstream	KCSAN: data-race in lookup_fast / vfs_rename (3) fs	1	882d	882d	0/26	auto-closed as invalid on 2021/12/24 12:08

================================================================== BUG: KCSAN: data-race in lookup_fast / vfs_rename write to 0xffff88810d861b40 of 4 bytes by task 20702 on cpu 0: dont_mount include/linux/dcache.h:355 [inline] vfs_rename+0xd0f/0xe60 fs/namei.c:4322 do_renameat2+0x5c3/0x900 fs/namei.c:4457 __do_sys_rename fs/namei.c:4508 [inline] __se_sys_rename fs/namei.c:4506 [inline] __x64_sys_rename+0x58/0x60 fs/namei.c:4506 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88810d861b40 of 4 bytes by task 4878 on cpu 1: d_revalidate fs/namei.c:767 [inline] lookup_fast+0x15f/0x370 fs/namei.c:1493 open_last_lookups fs/namei.c:3146 [inline] path_openat+0x45e/0x20a0 fs/namei.c:3368 do_filp_open+0xbd/0x1d0 fs/namei.c:3398 do_sys_openat2+0xa3/0x250 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_open fs/open.c:1196 [inline] __se_sys_open fs/open.c:1192 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1192 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4878 Comm: systemd-udevd Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================