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BUG: KCSAN: data-race in generic_fillattr / inode_set_ctime_current

write to 0xffff888103db1880 of 8 bytes by task 3376 on cpu 0:
 inode_set_ctime_to_ts include/linux/fs.h:1601 [inline]
 inode_set_ctime include/linux/fs.h:1619 [inline]
 inode_set_ctime_current+0x16c/0x1d0 fs/inode.c:2512
 shmem_symlink+0x327/0x390 mm/shmem.c:3515
 vfs_symlink+0xc2/0x1a0 fs/namei.c:4470
 do_symlinkat+0xe3/0x340 fs/namei.c:4496
 __do_sys_symlink fs/namei.c:4517 [inline]
 __se_sys_symlink fs/namei.c:4515 [inline]
 __x64_sys_symlink+0x56/0x60 fs/namei.c:4515
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888103db1880 of 8 bytes by task 3434 on cpu 1:
 inode_get_ctime include/linux/fs.h:1595 [inline]
 generic_fillattr+0x1e0/0x2f0 fs/stat.c:62
 shmem_getattr+0x17b/0x200 mm/shmem.c:1139
 vfs_getattr_nosec fs/stat.c:135 [inline]
 vfs_getattr+0x198/0x1e0 fs/stat.c:176
 vfs_statx+0x140/0x320 fs/stat.c:248
 vfs_fstatat+0xcd/0x100 fs/stat.c:304
 __do_sys_newfstatat fs/stat.c:468 [inline]
 __se_sys_newfstatat+0x58/0x260 fs/stat.c:462
 __x64_sys_newfstatat+0x55/0x60 fs/stat.c:462
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x0000000020c32717 -> 0x00000000215bbd97

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3434 Comm: udevd Not tainted 6.7.0-syzkaller-06264-g70d201a40823 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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