virnuma: add nodeset NULL check in virNumaSetupMemoryPolicy

Introduced by commit c63ef0452b, when nodeset is NULL, validation will
pass in virNumaSetupMemoryPolicy, but virBitmapNextSetBit must ensure
bitmap is not NULL, otherwise that might cause a segmentation fault.
This patch fixes it.

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>

diff --git a/src/util/virnuma.c b/src/util/virnuma.c
index 06520f78eb173214a62b13e91993784c2bb97cd4..b8d76f4074b94cb8be857e3b26e3b4c846d75634 100644 (file)
--- a/src/util/virnuma.c
+++ b/src/util/virnuma.c
@@ -97,6 +97,9 @@ virNumaSetupMemoryPolicy(virDomainNumatuneMemMode mode,
     size_t i;
     int maxnode = 0;
 
+    if (!nodeset)
+        return 0;
+
     if (!virNumaNodesetIsAvailable(nodeset))
         return -1;