From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Wed, 17 Feb 2010 22:14:40 +0000 (-0200)
Subject: block SIGCHLD in vcpu thread(s)
X-Git-Tag: v0.13.0-rc0~1285^2~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=adc8c965c401ec3becc14eabf7a5a6ba7a002f46;p=thirdparty%2Fqemu.git

block SIGCHLD in vcpu thread(s)

Otherwise a vcpu thread can run the sigchild handler causing
waitpid() from iothread to fail.

Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/vl.c b/vl.c
index 1957018cf67..3bc618dd393 100644
--- a/vl.c
+++ b/vl.c
@@ -3515,6 +3515,7 @@ static void block_io_signals(void)
     sigaddset(&set, SIGUSR2);
     sigaddset(&set, SIGIO);
     sigaddset(&set, SIGALRM);
+    sigaddset(&set, SIGCHLD);
     pthread_sigmask(SIG_BLOCK, &set, NULL);
 
     sigemptyset(&set);