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numa: Reject duplicate node IDs

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The same nodeid shouldn't appear multiple times in the command-line.

In addition to detecting command-line mistakes, this will fix a bug
where nb_numa_nodes may become larger than MAX_NODES (and cause
out-of-bounds access on the numa_info array).

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eduardo Habkost
2014-06-29 18:59:42 +03:00
committed by Michael S. Tsirkin
parent 1af878e049
commit 1945b9d8b0
1 changed files with 5 additions and 0 deletions
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numa.c
+5
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@@ -62,6 +62,11 @@ static void numa_node_parse(NumaNodeOptions *node, QemuOpts *opts, Error **errp)
return;
}
if (numa_info[nodenr].present) {
error_setg(errp, "Duplicate NUMA nodeid: %" PRIu16, nodenr);
return;
}
for (cpus = node->cpus; cpus; cpus = cpus->next) {
if (cpus->value > MAX_CPUMASK_BITS) {
error_setg(errp, "CPU number %" PRIu16 " is bigger than %d",