syzbot

==================================================================
BUG: KCSAN: data-race in generic_fillattr / shmem_unlink

read-write to 0xffff888104dfda28 of 8 bytes by task 3518 on cpu 1:
 shmem_unlink+0xfe/0x190 mm/shmem.c:3028
 shmem_rename2+0x194/0x2f0 mm/shmem.c:3105
 vfs_rename+0x8f5/0xb60 fs/namei.c:4779
 do_renameat2+0x6b8/0x9d0 fs/namei.c:4930
 __do_sys_rename fs/namei.c:4976 [inline]
 __se_sys_rename fs/namei.c:4974 [inline]
 __x64_sys_rename+0x58/0x60 fs/namei.c:4974
 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 0xffff888104dfda28 of 8 bytes by task 3810 on cpu 0:
 i_size_read include/linux/fs.h:864 [inline]
 generic_fillattr+0x220/0x2d0 fs/stat.c:57
 shmem_getattr+0x310/0x390 mm/shmem.c:1069
 vfs_getattr_nosec fs/stat.c:127 [inline]
 vfs_getattr fs/stat.c:164 [inline]
 vfs_statx+0x266/0x460 fs/stat.c:236
 vfs_fstatat fs/stat.c:270 [inline]
 __do_sys_newfstatat fs/stat.c:440 [inline]
 __se_sys_newfstatat+0x8a/0x290 fs/stat.c:434
 __x64_sys_newfstatat+0x51/0x60 fs/stat.c:434
 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: 0x000000000000170c -> 0x00000000000016f8

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3810 Comm: udevd Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
==================================================================