================================================================== BUG: KCSAN: data-race in atime_needs_update / inode_set_ctime_current write to 0xffff888129ad40e8 of 8 bytes by task 3530 on cpu 1: inode_set_ctime_current+0x533/0x770 fs/inode.c:2763 shmem_unlink+0x115/0x170 mm/shmem.c:3978 vfs_unlink+0x26c/0x420 fs/namei.c:4595 do_unlinkat+0x28e/0x4c0 fs/namei.c:4659 __do_sys_unlink fs/namei.c:4705 [inline] __se_sys_unlink fs/namei.c:4703 [inline] __x64_sys_unlink+0x2e/0x40 fs/namei.c:4703 x64_sys_call+0x22a6/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:88 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888129ad40e8 of 8 bytes by task 2995 on cpu 0: inode_get_ctime_sec include/linux/fs.h:1743 [inline] inode_get_ctime include/linux/fs.h:1753 [inline] relatime_need_update fs/inode.c:1977 [inline] atime_needs_update+0x2ef/0x3e0 fs/inode.c:2117 touch_atime+0x4a/0x340 fs/inode.c:2132 do_readlinkat+0x134/0x320 fs/stat.c:589 __do_sys_readlink fs/stat.c:613 [inline] __se_sys_readlink fs/stat.c:610 [inline] __x64_sys_readlink+0x47/0x60 fs/stat.c:610 x64_sys_call+0x2cf3/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:90 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000000686e31c7 -> 0x00000000686e31c8 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 2995 Comm: udevd Tainted: G W 6.16.0-rc5-syzkaller-00038-g733923397fd9 #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ==================================================================