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BUG: KCSAN: data-race in __dentry_kill / d_set_d_op

read-write to 0xffff88811f665b40 of 4 bytes by task 30993 on cpu 0:
 d_set_d_op+0x14c/0x1e0 fs/dcache.c:1936
 simple_lookup+0x78/0x90 fs/libfs.c:74
 __lookup_slow+0x178/0x230 fs/namei.c:1685
 lookup_slow+0x3c/0x60 fs/namei.c:1702
 walk_component+0x1ec/0x230 fs/namei.c:1993
 lookup_last fs/namei.c:2450 [inline]
 path_lookupat+0x11d/0x2b0 fs/namei.c:2474
 filename_lookup+0x133/0x310 fs/namei.c:2503
 vfs_statx+0xa3/0x3d0 fs/stat.c:228
 vfs_fstatat fs/stat.c:255 [inline]
 vfs_stat include/linux/fs.h:3283 [inline]
 __do_sys_newstat fs/stat.c:398 [inline]
 __se_sys_newstat+0x6d/0x270 fs/stat.c:394
 __x64_sys_newstat+0x2d/0x40 fs/stat.c:394
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88811f665b40 of 4 bytes by task 30996 on cpu 1:
 dentry_unlist fs/dcache.c:572 [inline]
 __dentry_kill+0x1e7/0x450 fs/dcache.c:603
 dentry_kill+0x8d/0x1e0
 dput+0x11e/0x1f0 fs/dcache.c:913
 handle_mounts fs/namei.c:1548 [inline]
 step_into+0x1fd/0x7d0 fs/namei.c:1831
 walk_component+0x164/0x230 fs/namei.c:1999
 lookup_last fs/namei.c:2450 [inline]
 path_lookupat+0x11d/0x2b0 fs/namei.c:2474
 filename_lookup+0x133/0x310 fs/namei.c:2503
 vfs_statx+0xa3/0x3d0 fs/stat.c:228
 vfs_fstatat fs/stat.c:255 [inline]
 vfs_stat include/linux/fs.h:3283 [inline]
 __do_sys_newstat fs/stat.c:398 [inline]
 __se_sys_newstat+0x6d/0x270 fs/stat.c:394
 __x64_sys_newstat+0x2d/0x40 fs/stat.c:394
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x10000000 -> 0x00000008

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 30996 Comm: syz-executor.2 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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