diff options
| -rw-r--r-- | kernel/signal.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 952741f6d0f9..9f2dc9cf3208 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2182,15 +2182,6 @@ static inline bool may_ptrace_stop(void) return true; } -/* - * Return non-zero if there is a SIGKILL that should be waking us up. - * Called with the siglock held. - */ -static bool sigkill_pending(struct task_struct *tsk) -{ - return sigismember(&tsk->pending.signal, SIGKILL) || - sigismember(&tsk->signal->shared_pending.signal, SIGKILL); -} /* * This must be called with current->sighand->siglock held. @@ -2217,17 +2208,16 @@ static void ptrace_stop(int exit_code, int why, int clear_code, kernel_siginfo_t * calling arch_ptrace_stop, so we must release it now. * To preserve proper semantics, we must do this before * any signal bookkeeping like checking group_stop_count. - * Meanwhile, a SIGKILL could come in before we retake the - * siglock. That must prevent us from sleeping in TASK_TRACED. - * So after regaining the lock, we must check for SIGKILL. */ spin_unlock_irq(¤t->sighand->siglock); arch_ptrace_stop(exit_code, info); spin_lock_irq(¤t->sighand->siglock); - if (sigkill_pending(current)) - return; } + /* + * schedule() will not sleep if there is a pending signal that + * can awaken the task. + */ set_special_state(TASK_TRACED); /* |