================================================================== BUG: KCSAN: data-race in touch_atime / touch_atime write to 0xffff88813de39c90 of 8 bytes by task 3144 on cpu 0: inode_update_timestamps fs/inode.c:1907 [inline] generic_update_time fs/inode.c:1929 [inline] inode_update_time fs/inode.c:1949 [inline] touch_atime+0x31f/0x4a0 fs/inode.c:2020 do_readlinkat+0x164/0x210 fs/stat.c:538 __do_sys_readlink fs/stat.c:560 [inline] __se_sys_readlink fs/stat.c:557 [inline] __x64_sys_readlink+0x47/0x50 fs/stat.c:557 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff88813de39c90 of 8 bytes by task 22338 on cpu 1: timespec64_equal include/linux/time64.h:49 [inline] inode_update_timestamps fs/inode.c:1906 [inline] generic_update_time fs/inode.c:1929 [inline] inode_update_time fs/inode.c:1949 [inline] touch_atime+0x2d8/0x4a0 fs/inode.c:2020 do_readlinkat+0x164/0x210 fs/stat.c:538 __do_sys_readlink fs/stat.c:560 [inline] __se_sys_readlink fs/stat.c:557 [inline] __x64_sys_readlink+0x47/0x50 fs/stat.c:557 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000027153ef6 -> 0x000000002a102f75 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 22338 Comm: udevd Not tainted 6.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 ================================================================== I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 0, async page read