==================================================================
BUG: KCSAN: data-race in __dentry_kill / __dentry_kill

write to 0xffff888106a7d600 of 4 bytes by task 2994 on cpu 0:
 d_lru_del fs/dcache.c:503 [inline]
 __dentry_kill+0xa8/0x4b0 fs/dcache.c:664
 dput+0x5e/0xd0 fs/dcache.c:911
 lookup_fast+0x29e/0x320 fs/namei.c:1783
 walk_component+0x3f/0x220 fs/namei.c:2134
 lookup_last fs/namei.c:2639 [inline]
 path_lookupat+0xfe/0x2a0 fs/namei.c:2663
 filename_lookup+0x147/0x340 fs/namei.c:2692
 do_readlinkat+0x7d/0x320 fs/stat.c:576
 __do_sys_readlink fs/stat.c:613 [inline]
 __se_sys_readlink fs/stat.c:610 [inline]
 __x64_sys_readlink+0x47/0x60 fs/stat.c:610
 x64_sys_call+0x2cf3/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:90
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888106a7d600 of 4 bytes by task 3511 on cpu 1:
 dentry_unlist fs/dcache.c:639 [inline]
 __dentry_kill+0x2aa/0x4b0 fs/dcache.c:683
 dput+0x5e/0xd0 fs/dcache.c:911
 lookup_fast+0x29e/0x320 fs/namei.c:1783
 walk_component+0x3f/0x220 fs/namei.c:2134
 lookup_last fs/namei.c:2639 [inline]
 path_lookupat+0xfe/0x2a0 fs/namei.c:2663
 filename_lookup+0x147/0x340 fs/namei.c:2692
 user_path_at+0x3e/0x130 fs/namei.c:3136
 do_faccessat+0x380/0x800 fs/open.c:492
 __do_sys_faccessat2 fs/open.c:546 [inline]
 __se_sys_faccessat2 fs/open.c:543 [inline]
 __x64_sys_faccessat2+0x51/0x60 fs/open.c:543
 x64_sys_call+0x2e69/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:440
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00140004 -> 0x00000004

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3511 Comm: udevd Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
==================================================================