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BUG: KCSAN: data-race in drop_nlink / generic_fillattr

write to 0xffff888125ba7808 of 4 bytes by task 8758 on cpu 1:
 drop_nlink+0x3b/0x90 fs/inode.c:331
 shmem_unlink+0x16c/0x190 mm/shmem.c:3345
 shmem_rename2+0x1dc/0x2c0 mm/shmem.c:3424
 vfs_rename+0x833/0x9b0 fs/namei.c:4861
 do_renameat2+0x7b3/0xa40 fs/namei.c:5013
 __do_sys_rename fs/namei.c:5059 [inline]
 __se_sys_rename fs/namei.c:5057 [inline]
 __x64_sys_rename+0x5c/0x70 fs/namei.c:5057
 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 0xffff888125ba7808 of 4 bytes by task 8766 on cpu 0:
 generic_fillattr+0xf8/0x2b0 fs/stat.c:55
 shmem_getattr+0x187/0x200 mm/shmem.c:1139
 vfs_getattr_nosec fs/stat.c:135 [inline]
 vfs_getattr fs/stat.c:172 [inline]
 vfs_statx+0x266/0x430 fs/stat.c:244
 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:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000001 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8766 Comm: udevd Not tainted 6.6.0-rc7-syzkaller-00018-gd88520ad73b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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