================================================================== BUG: KCSAN: data-race in shmem_mknod / vfs_getattr_nosec write to 0xffff888124e1ed40 of 8 bytes by task 9975 on cpu 1: shmem_mknod+0xdb/0x160 mm/shmem.c:2868 shmem_create+0x27/0x30 mm/shmem.c:2916 lookup_open fs/namei.c:3095 [inline] open_last_lookups fs/namei.c:3169 [inline] path_openat+0xcad/0x20e0 fs/namei.c:3357 do_filp_open+0xbd/0x1d0 fs/namei.c:3387 do_sys_openat2+0x33c/0x4a0 fs/open.c:1179 do_sys_open fs/open.c:1195 [inline] ksys_open include/linux/syscalls.h:1388 [inline] __do_sys_open fs/open.c:1201 [inline] __se_sys_open fs/open.c:1199 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1199 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888124e1ed40 of 8 bytes by task 9990 on cpu 0: i_size_read include/linux/fs.h:875 [inline] generic_fillattr fs/stat.c:45 [inline] vfs_getattr_nosec+0x262/0x310 fs/stat.c:90 vfs_getattr fs/stat.c:124 [inline] vfs_statx+0x148/0x2b0 fs/stat.c:206 vfs_stat include/linux/fs.h:3297 [inline] __do_sys_newstat fs/stat.c:361 [inline] __se_sys_newstat+0x46/0x250 fs/stat.c:357 __x64_sys_newstat+0x2d/0x40 fs/stat.c:357 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9990 Comm: systemd-udevd Not tainted 5.8.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================