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BUG: KCSAN: data-race in dentry_unlink_inode / step_into

write to 0xffff888105335cf0 of 8 bytes by task 7900 on cpu 0:
 __d_clear_type_and_inode fs/dcache.c:357 [inline]
 dentry_unlink_inode+0x65/0x240 fs/dcache.c:390
 d_delete+0x76/0xf0 fs/dcache.c:2389
 d_delete_notify+0x30/0xe0 include/linux/fsnotify.h:305
 vfs_unlink+0x30b/0x3f0 fs/namei.c:4350
 do_unlinkat+0x236/0x4c0 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
 x64_sys_call+0x286b/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888105335cf0 of 8 bytes by task 2786 on cpu 1:
 step_into+0x123/0x810 fs/namei.c:1846
 walk_component+0x169/0x230 fs/namei.c:2010
 lookup_last fs/namei.c:2461 [inline]
 path_lookupat+0x10a/0x2b0 fs/namei.c:2485
 filename_lookup+0x127/0x300 fs/namei.c:2514
 user_path_at_empty+0x42/0x120 fs/namei.c:2921
 do_readlinkat+0x92/0x210 fs/stat.c:499
 __do_sys_readlink fs/stat.c:532 [inline]
 __se_sys_readlink fs/stat.c:529 [inline]
 __x64_sys_readlink+0x47/0x60 fs/stat.c:529
 x64_sys_call+0x2613/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:90
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0xffff8881156fa0d0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 2786 Comm: udevd Not tainted 6.9.0-rc3-syzkaller-00365-g399f4dae683a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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