================================================================== BUG: KCSAN: data-race in generic_fillattr / touch_atime write to 0xffff888101495260 of 4 bytes by task 3295 on cpu 0: inode_set_atime_to_ts include/linux/fs.h:1664 [inline] inode_update_timestamps fs/inode.c:2035 [inline] generic_update_time fs/inode.c:2057 [inline] inode_update_time fs/inode.c:2077 [inline] touch_atime+0x1f3/0x350 fs/inode.c:2149 file_accessed include/linux/fs.h:2591 [inline] filemap_read+0x827/0x8d0 mm/filemap.c:2773 blkdev_read_iter+0x227/0x2d0 block/fops.c:796 new_sync_read fs/read_write.c:489 [inline] vfs_read+0x5e6/0x710 fs/read_write.c:570 ksys_read+0xeb/0x1b0 fs/read_write.c:713 __do_sys_read fs/read_write.c:722 [inline] __se_sys_read fs/read_write.c:720 [inline] __x64_sys_read+0x42/0x50 fs/read_write.c:720 x64_sys_call+0x2a3b/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:1 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888101495260 of 4 bytes by task 3292 on cpu 1: inode_get_atime_nsec include/linux/fs.h:1649 [inline] inode_get_atime include/linux/fs.h:1655 [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+0x172/0x1b0 fs/stat.c:246 vfs_statx_path fs/stat.c:283 [inline] vfs_statx+0x12c/0x310 fs/stat.c:349 vfs_fstatat+0xe4/0x130 fs/stat.c:368 __do_sys_newfstatat fs/stat.c:532 [inline] __se_sys_newfstatat+0x58/0x260 fs/stat.c:526 __x64_sys_newfstatat+0x55/0x70 fs/stat.c:526 x64_sys_call+0x2d6f/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:263 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x030646d6 -> 0x037bcfa5 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3292 Comm: udevd Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ==================================================================