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BUG: KCSAN: data-race in generic_fillattr / touch_atime

write to 0xffff888118b81e00 of 4 bytes by task 3288 on cpu 1:
 inode_set_atime_to_ts include/linux/fs.h:1662 [inline]
 inode_update_timestamps fs/inode.c:2083 [inline]
 generic_update_time fs/inode.c:2105 [inline]
 inode_update_time fs/inode.c:2125 [inline]
 touch_atime+0x1f3/0x350 fs/inode.c:2197
 file_accessed include/linux/fs.h:2589 [inline]
 iterate_dir+0x2e0/0x310 fs/readdir.c:111
 __do_sys_getdents64 fs/readdir.c:403 [inline]
 __se_sys_getdents64+0x87/0x1a0 fs/readdir.c:389
 __x64_sys_getdents64+0x43/0x50 fs/readdir.c:389
 x64_sys_call+0x2d24/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:218
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888118b81e00 of 4 bytes by task 3537 on cpu 0:
 inode_get_atime_nsec include/linux/fs.h:1647 [inline]
 inode_get_atime include/linux/fs.h:1653 [inline]
 generic_fillattr+0x16f/0x330 fs/stat.c:96
 shmem_getattr+0x17b/0x200 mm/shmem.c:1249
 vfs_getattr_nosec fs/stat.c:208 [inline]
 vfs_getattr fs/stat.c:246 [inline]
 vfs_fstat+0x19d/0x200 fs/stat.c:265
 vfs_fstatat fs/stat.c:364 [inline]
 __do_sys_newfstatat fs/stat.c:530 [inline]
 __se_sys_newfstatat+0xb5/0x300 fs/stat.c:524
 __x64_sys_newfstatat+0x55/0x70 fs/stat.c:524
 x64_sys_call+0x236d/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:263
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x33bb9456 -> 0x29e07012

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 3537 Comm: udevd Not tainted 6.14.0-rc1-syzkaller-00026-gd009de7d5428 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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