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BUG: KCSAN: data-race in __dentry_kill / d_walk

write to 0xffff888106cbab40 of 4 bytes by task 31683 on cpu 0:
 d_lru_del fs/dcache.c:437 [inline]
 __dentry_kill+0xa0/0x4b0 fs/dcache.c:598
 dput+0x5c/0xd0 fs/dcache.c:845
 path_put+0x1f/0x40 fs/namei.c:561
 free_fs_struct fs/fs_struct.c:91 [inline]
 exit_fs+0xaf/0xe0 fs/fs_struct.c:108
 do_exit+0x5e6/0x1740 kernel/exit.c:874
 do_group_exit+0x102/0x150 kernel/exit.c:1027
 get_signal+0xf2f/0x1080 kernel/signal.c:2911
 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x59/0x130 kernel/entry/common.c:212
 do_syscall_64+0xe2/0x1d0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

read to 0xffff888106cbab40 of 4 bytes by task 3222 on cpu 1:
 d_walk+0x278/0x4a0 fs/dcache.c:1250
 shrink_dcache_parent+0x84/0x1b0 fs/dcache.c:1487
 vfs_rmdir+0x28d/0x300 fs/namei.c:4213
 do_rmdir+0x194/0x320 fs/namei.c:4268
 __do_sys_unlinkat fs/namei.c:4444 [inline]
 __se_sys_unlinkat fs/namei.c:4438 [inline]
 __x64_sys_unlinkat+0xa4/0xb0 fs/namei.c:4438
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

value changed: 0x00280100 -> 0x00000100

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3222 Comm: syz-fuzzer Tainted: G        W          6.8.0-syzkaller-11752-gdba89d1b81df #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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