================================================================== BUG: KCSAN: data-race in __d_lookup_done / __dentry_kill read to 0xffff8881251ba480 of 4 bytes by task 8644 on cpu 1: dentry_unlist fs/dcache.c:544 [inline] __dentry_kill+0x1be/0x3c0 fs/dcache.c:575 dentry_kill fs/dcache.c:698 [inline] dput+0x3b5/0x750 fs/dcache.c:859 path_put_conditional fs/namei.c:821 [inline] follow_managed+0x1eb/0x6f0 fs/namei.c:1279 walk_component+0x4ec/0xd90 fs/namei.c:1808 link_path_walk.part.0+0x5d3/0xa90 fs/namei.c:2128 link_path_walk fs/namei.c:2256 [inline] path_lookupat.isra.0+0x77/0x5a0 fs/namei.c:2304 filename_lookup+0x145/0x2b0 fs/namei.c:2335 user_path_at_empty+0x4c/0x70 fs/namei.c:2615 user_path_at include/linux/namei.h:49 [inline] vfs_statx+0xd9/0x190 fs/stat.c:187 vfs_stat include/linux/fs.h:3249 [inline] __do_sys_newstat+0x51/0xb0 fs/stat.c:341 __se_sys_newstat fs/stat.c:337 [inline] __x64_sys_newstat+0x3a/0x50 fs/stat.c:337 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8881251ba480 of 4 bytes by task 8241 on cpu 0: __d_lookup_done+0xb0/0x2f0 fs/dcache.c:2629 d_lookup_done include/linux/dcache.h:367 [inline] d_lookup_done include/linux/dcache.h:363 [inline] __lookup_slow+0x254/0x2a0 fs/namei.c:1666 lookup_slow+0x4f/0x70 fs/namei.c:1682 walk_component+0x490/0xd90 fs/namei.c:1802 lookup_last fs/namei.c:2260 [inline] path_lookupat.isra.0+0x13a/0x5a0 fs/namei.c:2305 filename_lookup+0x145/0x2b0 fs/namei.c:2335 user_path_at_empty+0x4c/0x70 fs/namei.c:2615 do_readlinkat+0x84/0x220 fs/stat.c:399 __do_sys_readlink fs/stat.c:432 [inline] __se_sys_readlink fs/stat.c:429 [inline] __x64_sys_readlink+0x51/0x70 fs/stat.c:429 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 8241 Comm: udevd Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================