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Diffstat (limited to 'hw/vfio/pci.c')
-rw-r--r--hw/vfio/pci.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 056f3a887a..866f0deeb7 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2879,7 +2879,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
tmp = g_strdup_printf("%s/subsystem", vdev->vbasedev.sysfsdev);
subsys = realpath(tmp, NULL);
g_free(tmp);
- is_mdev = (strcmp(subsys, "/sys/bus/mdev") == 0);
+ is_mdev = subsys && (strcmp(subsys, "/sys/bus/mdev") == 0);
free(subsys);
trace_vfio_mdev(vdev->vbasedev.name, is_mdev);