diff options
| -rw-r--r-- | kernel/signal.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 0a1bf2c8bdcd..c34f8f899b76 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2084,12 +2084,17 @@ static void do_jobctl_trap(void) static int ptrace_signal(int signr, siginfo_t *info, struct pt_regs *regs, void *cookie) { - if (!current->ptrace) - return signr; - ptrace_signal_deliver(regs, cookie); - - /* Let the debugger run. */ + /* + * We do not check sig_kernel_stop(signr) but set this marker + * unconditionally because we do not know whether debugger will + * change signr. This flag has no meaning unless we are going + * to stop after return from ptrace_stop(). In this case it will + * be checked in do_signal_stop(), we should only stop if it was + * not cleared by SIGCONT while we were sleeping. See also the + * comment in dequeue_signal(). + */ + current->jobctl |= JOBCTL_STOP_DEQUEUED; ptrace_stop(signr, CLD_TRAPPED, 0, info); /* We're back. Did the debugger cancel the sig? */ @@ -2193,7 +2198,7 @@ relock: if (!signr) break; /* will return 0 */ - if (signr != SIGKILL) { + if (unlikely(current->ptrace) && signr != SIGKILL) { signr = ptrace_signal(signr, info, regs, cookie); if (!signr) |