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BUG: KCSAN: data-race in __dentry_kill / d_set_d_op

read-write to 0xffff8881340ff000 of 4 bytes by task 11897 on cpu 0:
 d_set_d_op+0x150/0x1e0 fs/dcache.c:1935
 simple_lookup+0x7c/0xa0 fs/libfs.c:78
 __lookup_slow+0x17a/0x230 fs/namei.c:1694
 lookup_slow+0x3c/0x60 fs/namei.c:1711
 walk_component+0x1ec/0x230 fs/namei.c:2002
 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
 user_path_at include/linux/namei.h:57 [inline]
 inotify_find_inode fs/notify/inotify/inotify_user.c:378 [inline]
 __do_sys_inotify_add_watch fs/notify/inotify/inotify_user.c:777 [inline]
 __se_sys_inotify_add_watch+0x119/0x820 fs/notify/inotify/inotify_user.c:730
 __x64_sys_inotify_add_watch+0x43/0x50 fs/notify/inotify/inotify_user.c:730
 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 0xffff8881340ff000 of 4 bytes by task 4613 on cpu 1:
 dentry_unlist fs/dcache.c:572 [inline]
 __dentry_kill+0x237/0x4a0 fs/dcache.c:603
 dentry_kill+0x8d/0x1e0
 dput+0x118/0x1f0 fs/dcache.c:913
 handle_mounts fs/namei.c:1555 [inline]
 step_into+0x21a/0x800 fs/namei.c:1840
 walk_component+0x164/0x230 fs/namei.c:2008
 lookup_last fs/namei.c:2459 [inline]
 path_lookupat+0x10a/0x2a0 fs/namei.c:2483
 filename_lookup+0x126/0x300 fs/namei.c:2512
 vfs_statx+0xa2/0x430 fs/stat.c:240
 vfs_fstatat+0xcd/0x100 fs/stat.c:295
 __do_sys_newfstatat fs/stat.c:459 [inline]
 __se_sys_newfstatat+0x58/0x260 fs/stat.c:453
 __x64_sys_newfstatat+0x55/0x60 fs/stat.c:453
 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: 0x10000000 -> 0x00000008

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 4613 Comm: udevd Tainted: G        W          6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
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udevd[4613]: inotify_add_watch(7, /dev/loop2p1, 10) failed: No such file or directory
udevd[4613]: inotify_add_watch(7, /dev/loop2p1, 10) failed: No such file or directory
blk_print_req_error: 4 callbacks suppressed
I/O error, dev loop4, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
udevd[4613]: inotify_add_watch(7, /dev/loop2p1, 10) failed: No such file or directory
I/O error, dev loop2, sector 8064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
udevd[4613]: inotify_add_watch(7, /dev/loop3p1, 10) failed: No such file or directory