================================================================== BUG: KCSAN: data-race in copy_process / task_dump_owner write to 0xffff888138e6c06c of 4 bytes by task 31881 on cpu 1: copy_process+0x631/0x2e20 kernel/fork.c:1987 kernel_clone+0x14b/0x680 kernel/fork.c:2500 __do_sys_clone kernel/fork.c:2617 [inline] __se_sys_clone kernel/fork.c:2601 [inline] __x64_sys_clone+0xb4/0xe0 kernel/fork.c:2601 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888138e6c06c of 4 bytes by task 31907 on cpu 0: task_dump_owner+0x2b/0x1d0 fs/proc/base.c:1822 pid_update_inode fs/proc/base.c:1964 [inline] pid_revalidate+0x69/0x110 fs/proc/base.c:1987 lookup_fast+0x1fd/0x350 fs/namei.c:827 walk_component+0x5c/0x350 fs/namei.c:1939 link_path_walk+0x4ba/0x780 fs/namei.c:2266 path_openat+0x1a0/0x20b0 fs/namei.c:3496 do_filp_open+0xd9/0x1f0 fs/namei.c:3527 do_sys_openat2+0xa3/0x250 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1214 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 31907 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================