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BUG: KCSAN: data-race in d_delete / lookup_fast

read-write to 0xffff8881053ed3c0 of 4 bytes by task 3304 on cpu 1:
 d_delete+0x6c/0xf0 fs/dcache.c:2563
 d_delete_notify+0x30/0xe0 include/linux/fsnotify.h:261
 vfs_unlink+0x305/0x3e0 fs/namei.c:4348
 do_unlinkat+0x26b/0x500 fs/namei.c:4399
 __do_sys_unlink fs/namei.c:4447 [inline]
 __se_sys_unlink fs/namei.c:4445 [inline]
 __x64_sys_unlink+0x30/0x40 fs/namei.c:4445
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff8881053ed3c0 of 4 bytes by task 2774 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:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00600108 -> 0x00008008

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2774 Comm: udevd Not tainted 6.6.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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