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-rwxr-xr-xtests/qemu-iotests/check3
1 files changed, 2 insertions, 1 deletions
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index 432732cfc3..74628ae637 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -214,7 +214,8 @@ do
 	start=`_wallclock`
 	$timestamp && echo -n "	["`date "+%T"`"]"
 	[ ! -x $seq ] && chmod u+x $seq # ensure we can run it
-	./$seq >$tmp.out 2>&1
+	MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(($RANDOM % 255 + 1))} \
+		./$seq >$tmp.out 2>&1
 	sts=$?
 	$timestamp && _timestamp
 	stop=`_wallclock`