KVM: s390: selftest: memop: Add bad address test

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>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20230206164602.138068-5-scgl@linux.ibm.com
Message-Id: <20230206164602.138068-5-scgl@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c
index bbc191a13760c38c04e65433d57a246d3c37a498..00737cceacdaad9449d22ec2502db07c1e2b8c51 100644 (file)
--- 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));