From 92b8196192a77bd39a76c966480047a76cf2b03f Mon Sep 17 00:00:00 2001
From: hwangcc23 <hwangcc@csie.nctu.edu.tw>
Date: Thu, 31 Aug 2017 22:48:33 +0800
Subject: [PATCH] Properly initialize sigaction struct

The code in handle_signal() wasn't clearing the struct sigaction before passing it to sigaction().
This meant that we would block a random set of signals while executing the default handler, or jump to the uninitialized __sa_sigaction__ (instead of sa_handler).
Initialize properly as we do in setup_signal_handler().
---
 src/sighandler.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/sighandler.c b/src/sighandler.c
index b1e7d166..1a161d2a 100644
--- a/src/sighandler.c
+++ b/src/sighandler.c
@@ -305,6 +305,8 @@ void handle_signal(int sig, siginfo_t *info, void *data) {
 
     struct sigaction action;
     action.sa_handler = SIG_DFL;
+    action.sa_flags = 0;
+    sigemptyset(&action.sa_mask);
     sigaction(sig, &action, NULL);
     raised_signal = sig;