From 31b782a147b9b4a9aa758d8eba9fba5b72a6abb1 Mon Sep 17 00:00:00 2001
From: Peter Krempa <pkrempa@redhat.com>
Date: Wed, 6 Jan 2016 15:34:13 +0100
Subject: [PATCH] conf: disallow empty cpusets for vcpu pinning when parsing
 XML

They are disallowed in the pinning API and as default cpuset.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1293241
---
 src/conf/domain_conf.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 602ec64d50..68287f3d7d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -14163,6 +14163,12 @@ virDomainVcpuPinDefParseXML(xmlNodePtr node,
     if (virBitmapParse(tmp, 0, &def->cpumask, VIR_DOMAIN_CPUMASK_LEN) < 0)
         goto error;
 
+    if (virBitmapIsAllClear(def->cpumask)) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                       _("Invalid value of 'cpuset': %s"), tmp);
+        goto error;
+    }
+
  cleanup:
     VIR_FREE(tmp);
     ctxt->node = oldnode;
-- 
2.39.5