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BUG: KCSAN: data-race in generic_fillattr / inode_set_ctime_current

write to 0xffff888103dd49d0 of 8 bytes by task 3135 on cpu 0:
 inode_set_ctime_to_ts include/linux/fs.h:1597 [inline]
 inode_set_ctime include/linux/fs.h:1615 [inline]
 inode_set_ctime_current+0x16c/0x1d0 fs/inode.c:2550
 shmem_mknod+0x113/0x180 mm/shmem.c:3261
 shmem_create+0x34/0x40 mm/shmem.c:3315
 lookup_open fs/namei.c:3477 [inline]
 open_last_lookups fs/namei.c:3546 [inline]
 path_openat+0xdc2/0x1d70 fs/namei.c:3776
 do_filp_open+0xf6/0x200 fs/namei.c:3809
 do_sys_openat2+0xab/0x110 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_sys_openat fs/open.c:1468 [inline]
 __se_sys_openat fs/open.c:1463 [inline]
 __x64_sys_openat+0xf3/0x120 fs/open.c:1463
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888103dd49d0 of 8 bytes by task 3341 on cpu 1:
 inode_get_ctime include/linux/fs.h:1591 [inline]
 generic_fillattr+0x1e0/0x2f0 fs/stat.c:62
 shmem_getattr+0x17b/0x200 mm/shmem.c:1138
 vfs_getattr_nosec fs/stat.c:135 [inline]
 vfs_getattr+0x198/0x1e0 fs/stat.c:176
 vfs_statx+0x12f/0x2f0 fs/stat.c:248
 vfs_fstatat+0xcd/0x100 fs/stat.c:299
 __do_sys_newfstatat fs/stat.c:463 [inline]
 __se_sys_newfstatat+0x58/0x260 fs/stat.c:457
 __x64_sys_newfstatat+0x55/0x60 fs/stat.c:457
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x0000000023b885d5 -> 0x000000002598f498

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3341 Comm: udevd Not tainted 6.7.0-rc5-syzkaller-00230-g3b8a9b2e6809 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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