From 04129606170ec9011d4952b4f22c368679bedbf9 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Mon, 27 May 2013 15:28:51 +0200 Subject: tests: set MALLOC_PERTURB_ to expose memory bugs glibc wipes malloc(3) memory when the MALLOC_PERTURB_ environment variable is set. The value of the environment variable determines the bit pattern used to wipe memory. For more information, see http://udrepper.livejournal.com/11429.html. Set MALLOC_PERTURB_ for gtester and qemu-iotests. Note we pick a random value from 1 to 255 to expose more bugs. If you need to reproduce a crash use 'show environment' in gdb to extract the MALLOC_PERTURB_ value from a core dump. Both make check and qemu-iotests pass with MALLOC_PERTURB_ enabled. Signed-off-by: Stefan Hajnoczi Reviewed-by: Eric Blake Message-id: 1369661331-28041-1-git-send-email-stefanha@redhat.com Signed-off-by: Anthony Liguori --- tests/qemu-iotests/check | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tests/qemu-iotests/check') 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` -- cgit v1.2.1