commit b7a7b3365145f6e9e434a3265a58666cd2e6d8dd
Author: Guido Günther <agx@sigxcpu.org>
Date:   Wed Mar 17 21:04:11 2010 +0100

    Don't crash without a security driver
    
    "virsh dominfo <vm>" crashes if there's no primary security driver set
    since we only intialize the secmodel.model and secmodel.doi if we have
    one. Attached patch checks for securityPrimaryDriver instead of
    securityDriver since the later is always set in qemudSecurityInit().
    
    Closes: http://bugs.debian.org/574359

Index: libvirt-0.7.7/src/qemu/qemu_driver.c
===================================================================
--- libvirt-0.7.7.orig/src/qemu/qemu_driver.c
+++ libvirt-0.7.7/src/qemu/qemu_driver.c
@@ -4901,7 +4901,7 @@ static int qemudNodeGetSecurityModel(vir
     int ret = 0;
 
     qemuDriverLock(driver);
-    if (!driver->securityDriver) {
+    if (!driver->securityPrimaryDriver) {
         memset(secmodel, 0, sizeof (*secmodel));
         goto cleanup;
     }