[PATCH 10/16] ptrace: In ptrace_signal look at what the debugger did with siginfo

["Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>]

Now that siginfo is only modified by the tracer and that siginfo is
cleared with the signal is canceled have ptrace_signal directly examine
siginfo.

This makes the code a little simpler and handles the case when
the tracer exits without calling ptrace_detach.

Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
 kernel/signal.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index ff4a52352390..3d955c23b13d 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2556,9 +2556,10 @@ static int ptrace_signal(int signr, kernel_siginfo_t *info, enum pid_type type)
 	 * comment in dequeue_signal().
 	 */
 	current->jobctl |= JOBCTL_STOP_DEQUEUED;
-	signr = ptrace_stop(signr, CLD_TRAPPED, 0, info);
+	ptrace_stop(signr, CLD_TRAPPED, 0, info);
 
 	/* We're back.  Did the debugger cancel the sig?  */
+	signr = info->si_signo;
 	if (signr == 0)
 		return signr;
 
-- 
2.35.3