================================================================== BUG: KCSAN: data-race in __dentry_kill / shrink_dentry_list read-write to 0xffff8881072663c0 of 4 bytes by task 3004 on cpu 1: d_shrink_del fs/dcache.c:515 [inline] shrink_dentry_list+0x1a6/0x3d0 fs/dcache.c:1140 shrink_dcache_parent+0x42/0x1b0 fs/dcache.c:-1 d_invalidate+0xa6/0x1c0 fs/dcache.c:1658 lookup_fast+0x296/0x320 fs/namei.c:1781 walk_component fs/namei.c:2147 [inline] link_path_walk+0x4ba/0x900 fs/namei.c:2519 path_openat+0x1de/0x2170 fs/namei.c:4130 do_filp_open+0x109/0x230 fs/namei.c:4161 do_sys_openat2+0xa6/0x110 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0xf2/0x120 fs/open.c:1463 x64_sys_call+0x2eab/0x3000 arch/x86/include/generated/asm/syscalls_64.h:258 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 0xffff8881072663c0 of 4 bytes by task 12054 on cpu 0: 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:1782 walk_component fs/namei.c:2147 [inline] link_path_walk+0x4ba/0x900 fs/namei.c:2519 path_openat+0x1de/0x2170 fs/namei.c:4130 do_filp_open+0x109/0x230 fs/namei.c:4161 do_sys_openat2+0xa6/0x110 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0xf2/0x120 fs/open.c:1463 x64_sys_call+0x2eab/0x3000 arch/x86/include/generated/asm/syscalls_64.h:258 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: 0x00240444 -> 0x00000044 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 12054 Comm: udevd Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 ==================================================================