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BUG: KCSAN: data-race in d_delete / lookup_fast

read-write to 0xffff88812a667480 of 4 bytes by task 7935 on cpu 1:
 d_delete+0x6c/0xf0 fs/dcache.c:2563
 d_delete_notify+0x30/0xe0 include/linux/fsnotify.h:260
 vfs_unlink+0x305/0x3e0 fs/namei.c:4333
 do_unlinkat+0x236/0x4c0 fs/namei.c:4382
 __do_sys_unlink fs/namei.c:4430 [inline]
 __se_sys_unlink fs/namei.c:4428 [inline]
 __x64_sys_unlink+0x30/0x40 fs/namei.c:4428
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff88812a667480 of 4 bytes by task 2776 on cpu 0:
 d_revalidate fs/namei.c:861 [inline]
 lookup_fast+0xd9/0x290 fs/namei.c:1643
 walk_component+0x3f/0x230 fs/namei.c:1998
 lookup_last fs/namei.c:2459 [inline]
 path_lookupat+0x10a/0x2a0 fs/namei.c:2483
 filename_lookup+0x126/0x300 fs/namei.c:2512
 user_path_at_empty+0x42/0x110 fs/namei.c:2911
 do_readlinkat+0x92/0x210 fs/stat.c:490
 __do_sys_readlink fs/stat.c:523 [inline]
 __se_sys_readlink fs/stat.c:520 [inline]
 __x64_sys_readlink+0x47/0x50 fs/stat.c:520
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x00600108 -> 0x00008008

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2776 Comm: udevd Not tainted 6.6.0-syzkaller-05843-g89ed67ef126c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
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