[PATCH v7 04/14] KVM: s390: selftest: memop: Add bad address test

Janis Schoetterl-Glausch
2023-02-06T16:46:27Z

Add a test that tries a real write to a bad address.
The existing CHECK_ONLY test doesn't cover all paths.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
---
tools/testing/selftests/kvm/s390x/memop.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c
index bbc191a13760..00737cceacda 100644
--- a/tools/testing/selftests/kvm/s390x/memop.c
+++ b/tools/testing/selftests/kvm/s390x/memop.c
@@ -641,7 +641,9 @@ static void _test_errors_common(struct test_info info, enum mop_target target, i

/* Bad guest address: */
rv = ERR_MOP(info, target, WRITE, mem1, size, GADDR((void *)~0xfffUL), CHECK_ONLY);
- TEST_ASSERT(rv > 0, "ioctl does not report bad guest memory access");
+ TEST_ASSERT(rv > 0, "ioctl does not report bad guest memory address with CHECK_ONLY");
+ rv = ERR_MOP(info, target, WRITE, mem1, size, GADDR((void *)~0xfffUL));
+ TEST_ASSERT(rv > 0, "ioctl does not report bad guest memory address on write");

/* Bad host address: */
rv = ERR_MOP(info, target, WRITE, 0, size, GADDR_V(mem1));
--
2.37.2