================================================================== BUG: KCSAN: data-race in exit_signals / task_dump_owner write to 0xffff88815e3980ac of 4 bytes by task 7755 on cpu 0: exit_signals+0xe1/0x4a0 kernel/signal.c:2910 do_exit+0x194/0x1560 kernel/exit.c:782 do_group_exit+0x19b/0x1a0 kernel/exit.c:923 __do_sys_exit_group+0xb/0x10 kernel/exit.c:934 __se_sys_exit_group+0x5/0x10 kernel/exit.c:932 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:932 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88815e3980ac of 4 bytes by task 7756 on cpu 1: 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:1938 link_path_walk+0x4ba/0x780 fs/namei.c:2265 path_openat+0x1a0/0x20b0 fs/namei.c:3490 do_filp_open+0xd9/0x1f0 fs/namei.c:3521 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+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7756 Comm: syz-executor.2 Tainted: G W 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================