[PATCH v1 2/6] selftests: kvm: s390: Add ucontrol flic attr selftests

Christoph Schlameuss
2024-12-09T11:07:32Z

Add some superficial selftests for the floating interrupt controller
when using ucontrol VMs. These tests are intended to cover very basic
calls only.

Some of the calls may trigger null pointer dereferences on kernels not
containing the fixes in this patch series.

Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
---
.../selftests/kvm/s390x/ucontrol_test.c | 150 ++++++++++++++++++
1 file changed, 150 insertions(+)

diff --git a/tools/testing/selftests/kvm/s390x/ucontrol_test.c b/tools/testing/selftests/kvm/s390x/ucontrol_test.c
index 0c112319dab1..972fac1023b5 100644
--- a/tools/testing/selftests/kvm/s390x/ucontrol_test.c
+++ b/tools/testing/selftests/kvm/s390x/ucontrol_test.c
@@ -635,4 +635,154 @@ TEST_F(uc_kvm, uc_skey)
uc_assert_diag44(self);
}

+static char uc_flic_b[PAGE_SIZE];
+static struct kvm_s390_io_adapter uc_flic_ioa = { .id = 0 };
+static struct kvm_s390_io_adapter_req uc_flic_ioam = { .id = 0 };
+static struct kvm_s390_ais_req uc_flic_asim = { .isc = 0 };
+static struct kvm_s390_ais_all uc_flic_asima = { .simm = 0 };
+static struct uc_flic_attr_test {
+ char *name;
+ struct kvm_device_attr a;
+ int hasrc;
+ u64 getrc;
+ int geterrno;
+ u64 setrc;
+ int seterrno;
+} uc_flic_attr_tests[] = {
+ {
+ .name = "KVM_DEV_FLIC_GET_ALL_IRQS",
+ .setrc = 1, .seterrno = EINVAL,
+ .a = {
+ .group = KVM_DEV_FLIC_GET_ALL_IRQS,
+ .addr = (u64)&uc_flic_b,
+ .attr = PAGE_SIZE,
+ },
+ },
+ {
+ .name = "KVM_DEV_FLIC_ENQUEUE",
+ .getrc = 1, .geterrno = EINVAL,
+ .a = { .group = KVM_DEV_FLIC_ENQUEUE, },
+ },
+ {
+ .name = "KVM_DEV_FLIC_CLEAR_IRQS",
+ .getrc = 1, .geterrno = EINVAL,
+ .a = { .group = KVM_DEV_FLIC_CLEAR_IRQS, },
+ },
+ {
+ .name = "KVM_DEV_FLIC_ADAPTER_REGISTER",
+ .getrc = 1, .geterrno = EINVAL,
+ .a = {
+ .group = KVM_DEV_FLIC_ADAPTER_REGISTER,
+ .addr = (u64)&uc_flic_ioa,
+ },
+ },
+ {
+ .name = "KVM_DEV_FLIC_ADAPTER_MODIFY",
+ .getrc = 1, .geterrno = EINVAL,
+ .setrc = 1, .seterrno = EINVAL,
+ .a = {
+ .group = KVM_DEV_FLIC_ADAPTER_MODIFY,
+ .addr = (u64)&uc_flic_ioam,
+ .attr = sizeof(uc_flic_ioam),
+ },
+ },
+ {
+ .name = "KVM_DEV_FLIC_CLEAR_IO_IRQ",
+ .getrc = 1, .geterrno = EINVAL,
+ .setrc = 1, .seterrno = EINVAL,
+ .a = {
+ .group = KVM_DEV_FLIC_CLEAR_IO_IRQ,
+ .attr = 32,
+ },
+ },
+ {
+ .name = "KVM_DEV_FLIC_AISM",
+ .getrc = 1, .geterrno = EINVAL,
+ .setrc = 1, .seterrno = ENOTSUP,
+ .a = {
+ .group = KVM_DEV_FLIC_AISM,
+ .addr = (u64)&uc_flic_asim,
+ },
+ },
+ {
+ .name = "KVM_DEV_FLIC_AIRQ_INJECT",
+ .getrc = 1, .geterrno = EINVAL,
+ .a = { .group = KVM_DEV_FLIC_AIRQ_INJECT, },
+ },
+ {
+ .name = "KVM_DEV_FLIC_AISM_ALL",
+ .getrc = 1, .geterrno = ENOTSUP,
+ .setrc = 1, .seterrno = ENOTSUP,
+ .a = {
+ .group = KVM_DEV_FLIC_AISM_ALL,
+ .addr = (u64)&uc_flic_asima,
+ .attr = sizeof(uc_flic_asima),
+ },
+ },
+ {
+ .name = "KVM_DEV_FLIC_APF_ENABLE",
+ .getrc = 1, .geterrno = EINVAL,
+ .setrc = 1, .seterrno = EINVAL,
+ .a = { .group = KVM_DEV_FLIC_APF_ENABLE, },
+ },
+ {
+ .name = "KVM_DEV_FLIC_APF_DISABLE_WAIT",
+ .getrc = 1, .geterrno = EINVAL,
+ .setrc = 1, .seterrno = EINVAL,
+ .a = { .group = KVM_DEV_FLIC_APF_DISABLE_WAIT, },
+ },
+};
+
+TEST_F(uc_kvm, uc_flic_attrs)
+{
+ struct kvm_create_device cd = { .type = KVM_DEV_TYPE_FLIC };
+ struct kvm_device_attr attr;
+ u64 value;
+ int rc, i;
+
+ rc = ioctl(self->vm_fd, KVM_CREATE_DEVICE, &cd);
+ ASSERT_EQ(0, rc) TH_LOG("create device failed with err %s (%i)",
+ strerror(errno), errno);
+
+ for (i = 0; i < ARRAY_SIZE(uc_flic_attr_tests); i++) {
+ TH_LOG("test %s", uc_flic_attr_tests[i].name);
+ attr = (struct kvm_device_attr) {
+ .group = uc_flic_attr_tests[i].a.group,
+ .attr = uc_flic_attr_tests[i].a.attr,
+ .addr = uc_flic_attr_tests[i].a.addr,
+ };
+ if (attr.addr == 0)
+ attr.addr = (u64)&value;
+
+ rc = ioctl(cd.fd, KVM_HAS_DEVICE_ATTR, &attr);
+ EXPECT_EQ(uc_flic_attr_tests[i].hasrc, !!rc)
+ TH_LOG("expected dev attr missing %s",
+ uc_flic_attr_tests[i].name);
+
+ rc = ioctl(cd.fd, KVM_GET_DEVICE_ATTR, &attr);
+ EXPECT_EQ(uc_flic_attr_tests[i].getrc, !!rc)
+ TH_LOG("get dev attr rc not expected on %s %s (%i)",
+ uc_flic_attr_tests[i].name,
+ strerror(errno), errno);
+ if (uc_flic_attr_tests[i].geterrno)
+ EXPECT_EQ(uc_flic_attr_tests[i].geterrno, errno)
+ TH_LOG("get dev attr errno not expected on %s %s (%i)",
+ uc_flic_attr_tests[i].name,
+ strerror(errno), errno);
+
+ rc = ioctl(cd.fd, KVM_SET_DEVICE_ATTR, &attr);
+ EXPECT_EQ(uc_flic_attr_tests[i].setrc, !!rc)
+ TH_LOG("set sev attr rc not expected on %s %s (%i)",
+ uc_flic_attr_tests[i].name,
+ strerror(errno), errno);
+ if (uc_flic_attr_tests[i].seterrno)
+ EXPECT_EQ(uc_flic_attr_tests[i].seterrno, errno)
+ TH_LOG("set dev attr errno not expected on %s %s (%i)",
+ uc_flic_attr_tests[i].name,
+ strerror(errno), errno);
+ }
+
+ close(cd.fd);
+}
+
TEST_HARNESS_MAIN
--
2.47.1