From: Pierre-Marc Fournier <pierre-marc.fournier@polymtl.ca>
Date: Sat, 27 Feb 2010 16:58:00 +0000 (-0500)
Subject: ust_fork(): prevent deadlock by forcing release of trace_lock after fork in child
X-Git-Tag: v0.3~16
X-Git-Url: https://git.lttng.org/?p=ust.git;a=commitdiff_plain;h=73850001f047388d242925d14d2493cfa11916fb

ust_fork(): prevent deadlock by forcing release of trace_lock after fork in child
---

diff --git a/libust/tracectl.c b/libust/tracectl.c
index c72d013..af0149a 100644
--- a/libust/tracectl.c
+++ b/libust/tracectl.c
@@ -1455,6 +1455,10 @@ static void ust_fork(void)
 
 	/* FIXME: technically, the locks could have been taken before the fork */
 	DBG("ust: forking");
+
+	/* break lock if necessary */
+	ltt_unlock_traces();
+
 	ltt_trace_stop("auto");
 	ltt_trace_destroy("auto", 1);
 	/* Delete all active connections */