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tests: add test to check VirtQueue object 

An uninitialised VirtQueue object or one with Vring.align field
set to zero(0) could lead to arithmetic exceptions. Add a unit
test to validate it.

Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Prasad J Pandit 2017-11-29 23:14:28 +05:30 committed by Michael S. Tsirkin
parent 939dd2d350
commit 4426f06102
1 changed files with 25 additions and 0 deletions
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25
tests/virtio-blk-test.c
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@ -674,6 +674,30 @@ static void pci_hotplug(void)
qtest_shutdown(qs); qtest_shutdown(qs);
} }
/*
* Check that setting the vring addr on a non-existent virtqueue does
* not crash.
*/
static void test_nonexistent_virtqueue(void)
{
QPCIBar bar0;
QOSState *qs;
QPCIDevice *dev;
qs = pci_test_start();
dev = qpci_device_find(qs->pcibus, QPCI_DEVFN(4, 0));
g_assert(dev != NULL);
qpci_device_enable(dev);
bar0 = qpci_iomap(dev, 0, NULL);
qpci_io_writeb(dev, bar0, VIRTIO_PCI_QUEUE_SEL, 2);
qpci_io_writel(dev, bar0, VIRTIO_PCI_QUEUE_PFN, 1);
g_free(dev);
qtest_shutdown(qs);
}
static void mmio_basic(void) static void mmio_basic(void)
{ {
QVirtioMMIODevice *dev; QVirtioMMIODevice *dev;
@ -724,6 +748,7 @@ int main(int argc, char **argv)
qtest_add_func("/virtio/blk/pci/basic", pci_basic); qtest_add_func("/virtio/blk/pci/basic", pci_basic);
qtest_add_func("/virtio/blk/pci/indirect", pci_indirect); qtest_add_func("/virtio/blk/pci/indirect", pci_indirect);
qtest_add_func("/virtio/blk/pci/config", pci_config); qtest_add_func("/virtio/blk/pci/config", pci_config);
qtest_add_func("/virtio/blk/pci/nxvirtq", test_nonexistent_virtqueue);
if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) { if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
qtest_add_func("/virtio/blk/pci/msix", pci_msix); qtest_add_func("/virtio/blk/pci/msix", pci_msix);
qtest_add_func("/virtio/blk/pci/idx", pci_idx); qtest_add_func("/virtio/blk/pci/idx", pci_idx);