diff -Nru libvirt-1.2.2/debian/changelog libvirt-1.2.2/debian/changelog
--- libvirt-1.2.2/debian/changelog	2015-02-11 05:43:07.000000000 +0900
+++ libvirt-1.2.2/debian/changelog	2015-06-11 18:30:11.000000000 +0900
@@ -1,3 +1,14 @@
+libvirt (1.2.2-0ubuntu13.1.11) trusty; urgency=medium
+
+  * virObjectUnref() libvirtd killed by SIGSEGV (LP: #1464175)
+    - upstream, util: identity: Harden virIdentitySetCurrent()
+    - upstream, daemon: Clear fake domain def object that is used to check 
+      ACL prior to use
+    - upstream, rpc: Don't unref identity object while callbacks still can 
+      be executed
+
+ -- Seyeong Kim <seyeong.kim@canonical.com>  Thu, 11 Jun 2015 18:27:12 +0900
+
 libvirt (1.2.2-0ubuntu13.1.10) trusty-proposed; urgency=medium
 
   * 9035-qemu-snapshot-save-persistent-domain-config: upstream fix for a
diff -Nru libvirt-1.2.2/debian/patches/fix_libvirtd_killed_by_sigsegv.patch libvirt-1.2.2/debian/patches/fix_libvirtd_killed_by_sigsegv.patch
--- libvirt-1.2.2/debian/patches/fix_libvirtd_killed_by_sigsegv.patch	1970-01-01 09:00:00.000000000 +0900
+++ libvirt-1.2.2/debian/patches/fix_libvirtd_killed_by_sigsegv.patch	2015-06-11 18:54:02.000000000 +0900
@@ -0,0 +1,63 @@
+Description: virObjectUnref() libvirtd killed by SIGSEGV
+ While memory load is high, libvirtd could be crashed(segfault) if you 
+ command something ( destroy, migrate, etc )
+
+Author: Peter Krempa <pkrempa@redhat.com>
+
+Origin: upstream, http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=ad886fa6c8ebc321a0386a75c187d315111cf1f3
+        upstream, http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=6ca857c7c8a1f7b571132d6c7fff5a06301a5e9a
+        upstream, http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=a98129c0ee52b6a8fdd39988a6d090057f149ae9
+Bug-Ubuntu: https://bugs.launchpad.net/bugs/1464175
+Last-Update: 2015-03-25
+Index: libvirt-1.2.2/daemon/remote.c
+===================================================================
+--- libvirt-1.2.2.orig/daemon/remote.c
++++ libvirt-1.2.2/daemon/remote.c
+@@ -143,6 +143,7 @@ remoteRelayDomainEventCheckACL(virNetSer
+     /* For now, we just create a virDomainDef with enough contents to
+      * satisfy what viraccessdriverpolkit.c references.  This is a bit
+      * fragile, but I don't know of anything better.  */
++    memset(&def, 0, sizeof(def));
+     def.name = dom->name;
+     memcpy(def.uuid, dom->uuid, VIR_UUID_BUFLEN);
+ 
+Index: libvirt-1.2.2/src/rpc/virnetserverclient.c
+===================================================================
+--- libvirt-1.2.2.orig/src/rpc/virnetserverclient.c
++++ libvirt-1.2.2/src/rpc/virnetserverclient.c
+@@ -910,12 +910,12 @@ void virNetServerClientDispose(void *obj
+     PROBE(RPC_SERVER_CLIENT_DISPOSE,
+           "client=%p", client);
+ 
+-    virObjectUnref(client->identity);
+-
+     if (client->privateData &&
+         client->privateDataFreeFunc)
+         client->privateDataFreeFunc(client->privateData);
+ 
++    virObjectUnref(client->identity);
++
+ #if WITH_SASL
+     virObjectUnref(client->sasl);
+ #endif
+Index: libvirt-1.2.2/src/util/viridentity.c
+===================================================================
+--- libvirt-1.2.2.orig/src/util/viridentity.c
++++ libvirt-1.2.2/src/util/viridentity.c
+@@ -110,14 +110,15 @@ int virIdentitySetCurrent(virIdentityPtr
+         return -1;
+ 
+     old = virThreadLocalGet(&virIdentityCurrent);
+-    virObjectUnref(old);
+ 
+     if (virThreadLocalSet(&virIdentityCurrent,
+                           virObjectRef(ident)) < 0) {
+         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                        _("Unable to set thread local identity"));
++        virObjectUnref(ident);
+         return -1;
+     }
++    virObjectUnref(old);
+ 
+     return 0;
+ }
diff -Nru libvirt-1.2.2/debian/patches/series libvirt-1.2.2/debian/patches/series
--- libvirt-1.2.2/debian/patches/series	2015-02-11 05:41:13.000000000 +0900
+++ libvirt-1.2.2/debian/patches/series	2015-06-11 18:18:24.000000000 +0900
@@ -42,3 +42,4 @@
 numa-cgroups-fix-cpuset-mems-init.patch
 9035-qemu-snapshot-save-persistent-domain-config
 9036-dont-fail-without-cpu-model.patch
+fix_libvirtd_killed_by_sigsegv.patch