cryptospore / rpms / qemu-kvm

Forked from rpms/qemu-kvm 2 years ago
Clone

Blame SOURCES/kvm-tests-set-MALLOC_PERTURB_-to-expose-memory-bugs.patch

218e99
From 5178597af3139c1ce9ac95971729468eda5625d7 Mon Sep 17 00:00:00 2001
218e99
From: Stefan Hajnoczi <stefanha@redhat.com>
218e99
Date: Mon, 27 May 2013 15:28:51 +0200
218e99
Subject: [PATCH 34/38] tests: set MALLOC_PERTURB_ to expose memory bugs
218e99
218e99
Message-id: <1379499002-5231-3-git-send-email-mreitz@redhat.com>
218e99
Patchwork-id: 54433
218e99
O-Subject: [RHEL-7.0 qemu-kvm PATCH 2/6] tests: set MALLOC_PERTURB_ to expose memory bugs
218e99
Bugzilla: 1006959
218e99
RH-Acked-by: Markus Armbruster <armbru@redhat.com>
218e99
RH-Acked-by: Fam Zheng <famz@redhat.com>
218e99
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
218e99
218e99
BZ: 1006959
218e99
218e99
glibc wipes malloc(3) memory when the MALLOC_PERTURB_ environment
218e99
variable is set.  The value of the environment variable determines the
218e99
bit pattern used to wipe memory.  For more information, see
218e99
http://udrepper.livejournal.com/11429.html.
218e99
218e99
Set MALLOC_PERTURB_ for gtester and qemu-iotests.  Note we pick a random
218e99
value from 1 to 255 to expose more bugs.  If you need to reproduce a
218e99
crash use 'show environment' in gdb to extract the MALLOC_PERTURB_
218e99
value from a core dump.
218e99
218e99
Both make check and qemu-iotests pass with MALLOC_PERTURB_ enabled.
218e99
218e99
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
218e99
Reviewed-by: Eric Blake <eblake@redhat.com>
218e99
Message-id: 1369661331-28041-1-git-send-email-stefanha@redhat.com
218e99
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
218e99
(cherry picked from commit 04129606170ec9011d4952b4f22c368679bedbf9)
218e99
218e99
Signed-off-by: Max Reitz <mreitz@redhat.com>
218e99
---
218e99
 tests/Makefile           |    5 ++++-
218e99
 tests/qemu-iotests/check |    3 ++-
218e99
 2 files changed, 6 insertions(+), 2 deletions(-)
218e99
218e99
diff --git a/tests/Makefile b/tests/Makefile
218e99
index a307d5a..c107489 100644
218e99
--- a/tests/Makefile
218e99
+++ b/tests/Makefile
218e99
@@ -171,6 +171,7 @@ GCOV_OPTIONS = -n $(if $(V),-f,)
218e99
 $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y)
218e99
 	$(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,)
218e99
 	$(call quiet-command,QTEST_QEMU_BINARY=$*-softmmu/qemu-system-$* \
218e99
+		MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$((RANDOM % 255 + 1))} \
218e99
 		gtester $(GTESTER_OPTIONS) -m=$(SPEED) $(check-qtest-$*-y),"GTESTER $@")
218e99
 	$(if $(CONFIG_GCOV),@for f in $(gcov-files-$*-y); do \
218e99
 	  echo Gcov report for $$f:;\
218e99
@@ -180,7 +181,9 @@ $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y)
218e99
 .PHONY: $(patsubst %, check-%, $(check-unit-y))
218e99
 $(patsubst %, check-%, $(check-unit-y)): check-%: %
218e99
 	$(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,)
218e99
-	$(call quiet-command,gtester $(GTESTER_OPTIONS) -m=$(SPEED) $*,"GTESTER $*")
218e99
+	$(call quiet-command, \
218e99
+		MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$((RANDOM % 255 + 1))} \
218e99
+		gtester $(GTESTER_OPTIONS) -m=$(SPEED) $*,"GTESTER $*")
218e99
 	$(if $(CONFIG_GCOV),@for f in $(gcov-files-$(subst tests/,,$*)-y); do \
218e99
 	  echo Gcov report for $$f:;\
218e99
 	  $(GCOV) $(GCOV_OPTIONS) $$f -o `dirname $$f`; \
218e99
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
218e99
index 432732c..74628ae 100755
218e99
--- a/tests/qemu-iotests/check
218e99
+++ b/tests/qemu-iotests/check
218e99
@@ -214,7 +214,8 @@ do
218e99
 	start=`_wallclock`
218e99
 	$timestamp && echo -n "	["`date "+%T"`"]"
218e99
 	[ ! -x $seq ] && chmod u+x $seq # ensure we can run it
218e99
-	./$seq >$tmp.out 2>&1
218e99
+	MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(($RANDOM % 255 + 1))} \
218e99
+		./$seq >$tmp.out 2>&1
218e99
 	sts=$?
218e99
 	$timestamp && _timestamp
218e99
 	stop=`_wallclock`
218e99
-- 
218e99
1.7.1
218e99