diff options
Diffstat (limited to 'kernel/ptrace.c')
| -rw-r--r-- | kernel/ptrace.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 7105821595bc..05953ac9f7bd 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -266,17 +266,9 @@ static int ptrace_check_attach(struct task_struct *child, bool ignore_state) } read_unlock(&tasklist_lock); - if (!ret && !ignore_state) { - if (!wait_task_inactive(child, __TASK_TRACED)) { - /* - * This can only happen if may_ptrace_stop() fails and - * ptrace_stop() changes ->state back to TASK_RUNNING, - * so we should not worry about leaking __TASK_TRACED. - */ - WARN_ON(READ_ONCE(child->__state) == __TASK_TRACED); - ret = -ESRCH; - } - } + if (!ret && !ignore_state && + WARN_ON_ONCE(!wait_task_inactive(child, __TASK_TRACED))) + ret = -ESRCH; return ret; } |