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BUG: KCSAN: data-race in touch_atime / touch_atime

write to 0xffff888107914ff8 of 4 bytes by task 3305 on cpu 0:
 inode_set_atime_to_ts include/linux/fs.h:1626 [inline]
 inode_update_atime fs/inode.c:2098 [inline]
 inode_update_time fs/inode.c:2156 [inline]
 generic_update_time fs/inode.c:2189 [inline]
 touch_atime+0x1d7/0x330 fs/inode.c:2267
 do_readlinkat+0x137/0x2f0 fs/stat.c:582
 __do_sys_readlink fs/stat.c:605 [inline]
 __se_sys_readlink fs/stat.c:602 [inline]
 __x64_sys_readlink+0x47/0x60 fs/stat.c:602
 x64_sys_call+0x2b51/0x3020 arch/x86/include/generated/asm/syscalls_64.h:90
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x12c/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888107914ff8 of 4 bytes by task 6374 on cpu 1:
 inode_get_atime_nsec include/linux/fs.h:1611 [inline]
 inode_get_atime include/linux/fs.h:1617 [inline]
 inode_update_atime fs/inode.c:2092 [inline]
 inode_update_time fs/inode.c:2156 [inline]
 generic_update_time fs/inode.c:2189 [inline]
 touch_atime+0x16c/0x330 fs/inode.c:2267
 do_readlinkat+0x137/0x2f0 fs/stat.c:582
 __do_sys_readlink fs/stat.c:605 [inline]
 __se_sys_readlink fs/stat.c:602 [inline]
 __x64_sys_readlink+0x47/0x60 fs/stat.c:602
 x64_sys_call+0x2b51/0x3020 arch/x86/include/generated/asm/syscalls_64.h:90
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x12c/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x2779e7c0 -> 0x295a7731

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 6374 Comm: udevd Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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