From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:54278) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ueluh-00034d-AG for qemu-devel@nongnu.org; Tue, 21 May 2013 08:43:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Uelua-00036i-Sm for qemu-devel@nongnu.org; Tue, 21 May 2013 08:43:35 -0400 Received: from mx1.redhat.com ([209.132.183.28]:23879) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Uelua-00036W-Jt for qemu-devel@nongnu.org; Tue, 21 May 2013 08:43:28 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r4LChRMI015823 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 21 May 2013 08:43:28 -0400 From: Stefan Hajnoczi Date: Tue, 21 May 2013 14:43:22 +0200 Message-Id: <1369140202-5848-1-git-send-email-stefanha@redhat.com> Subject: [Qemu-devel] [PATCH v2] tests: set MALLOC_PERTURB_ to expose memory bugs List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Lucas Meneghel Rodrigues , Markus Armbruster , Stefan Hajnoczi 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 --- tests/Makefile | 5 ++++- tests/qemu-iotests/check | 3 ++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/tests/Makefile b/tests/Makefile index a307d5a..24880c6 100644 --- a/tests/Makefile +++ b/tests/Makefile @@ -171,6 +171,7 @@ GCOV_OPTIONS = -n $(if $(V),-f,) $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y) $(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,) $(call quiet-command,QTEST_QEMU_BINARY=$*-softmmu/qemu-system-$* \ + MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(($RANDOM % 255 + 1))} \ gtester $(GTESTER_OPTIONS) -m=$(SPEED) $(check-qtest-$*-y),"GTESTER $@") $(if $(CONFIG_GCOV),@for f in $(gcov-files-$*-y); do \ echo Gcov report for $$f:;\ @@ -180,7 +181,9 @@ $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y) .PHONY: $(patsubst %, check-%, $(check-unit-y)) $(patsubst %, check-%, $(check-unit-y)): check-%: % $(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,) - $(call quiet-command,gtester $(GTESTER_OPTIONS) -m=$(SPEED) $*,"GTESTER $*") + $(call quiet-command, \ + MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(($RANDOM % 255 + 1))} \ + gtester $(GTESTER_OPTIONS) -m=$(SPEED) $*,"GTESTER $*") $(if $(CONFIG_GCOV),@for f in $(gcov-files-$(subst tests/,,$*)-y); do \ echo Gcov report for $$f:;\ $(GCOV) $(GCOV_OPTIONS) $$f -o `dirname $$f`; \ diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check index 432732c..74628ae 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` -- 1.8.1.4