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check-block: enable iotests with cfi-icall 

cfi-icall is a form of Control-Flow Integrity for indirect function
calls implemented by llvm. It is enabled with a -fsanitize flag.

iotests are currently disabled when -fsanitize options is used, with the
exception of SafeStack.

This patch implements a generic filtering mechanism to allow iotests
with a set of known-to-be-safe -fsanitize option. Then marks SafeStack
and the new options used for cfi-icall safe for iotests

Signed-off-by: Daniele Buono <dbuono@linux.vnet.ibm.com>
Message-Id: <20201204230615.2392-4-dbuono@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Daniele Buono 2020-12-04 18:06:13 -05:00 committed by Paolo Bonzini
parent c905a3680d
commit 24496fe851
1 changed files with 11 additions and 7 deletions
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18
tests/check-block.sh
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@ -21,14 +21,18 @@ if grep -q "CONFIG_GPROF=y" config-host.mak 2>/dev/null ; then
exit 0
fi
# Disable tests with any sanitizer except for SafeStack
CFLAGS=$( grep "CFLAGS.*-fsanitize" config-host.mak 2>/dev/null )
SANITIZE_FLAGS=""
#Remove all occurrencies of -fsanitize=safe-stack
for i in ${CFLAGS}; do
if [ "${i}" != "-fsanitize=safe-stack" ]; then
SANITIZE_FLAGS="${SANITIZE_FLAGS} ${i}"
# Disable tests with any sanitizer except for specific ones
SANITIZE_FLAGS=$( grep "CFLAGS.*-fsanitize" config-host.mak 2>/dev/null )
ALLOWED_SANITIZE_FLAGS="safe-stack cfi-icall"
#Remove all occurrencies of allowed Sanitize flags
for j in ${ALLOWED_SANITIZE_FLAGS}; do
TMP_FLAGS=${SANITIZE_FLAGS}
SANITIZE_FLAGS=""
for i in ${TMP_FLAGS}; do
if ! echo ${i} | grep -q "${j}" 2>/dev/null; then
SANITIZE_FLAGS="${SANITIZE_FLAGS} ${i}"
fi
done
done
if echo ${SANITIZE_FLAGS} | grep -q "\-fsanitize" 2>/dev/null; then
# Have a sanitize flag that is not allowed, stop