[PATCH 4/8] block SIGCHLD in vcpu thread(s)

[Marcelo Tosatti <mtosatti@xxxxxxxxxx>]

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

Signed-off-by: Marcelo Tosatti <mtosa...@xxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
 vl.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/vl.c b/vl.c
index 1957018..3bc618d 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);
-- 
1.6.6

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