syzbot

udevd[11760]: inotify_add_watch(7, /dev/loop1p32, 10) failed: No such file or directory
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BUG: KCSAN: data-race in generic_fillattr / shmem_mknod

read-write to 0xffff888103427408 of 8 bytes by task 11762 on cpu 0:
 shmem_mknod+0xd1/0x170 mm/shmem.c:2934
 shmem_create+0x2f/0x40 mm/shmem.c:2986
 lookup_open fs/namei.c:3413 [inline]
 open_last_lookups fs/namei.c:3481 [inline]
 path_openat+0xc6d/0x1b60 fs/namei.c:3711
 do_filp_open+0x105/0x220 fs/namei.c:3741
 do_sys_openat2+0xb5/0x2a0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_openat fs/open.c:1342 [inline]
 __se_sys_openat fs/open.c:1337 [inline]
 __x64_sys_openat+0xef/0x110 fs/open.c:1337
 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 0xffff888103427408 of 8 bytes by task 11760 on cpu 1:
 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: 0x0000000000002350 -> 0x0000000000002364

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 11760 Comm: udevd Tainted: G        W          6.2.0-rc6-syzkaller-00003-g22b8077d0fce-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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