1 files changed, 6 insertions, 1 deletions
diff --git a/qom/cpu.c b/qom/cpu.c
index 94fa8fe005..54c9452b1c 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -316,7 +316,12 @@ static bool cpu_common_has_work(CPUState *cs)
 
 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
 {
-    CPUClass *cc = CPU_CLASS(object_class_by_name(typename));
+    CPUClass *cc;
+
+    if (!cpu_model) {
+        return NULL;
+    }
+    cc = CPU_CLASS(object_class_by_name(typename));
 
     return cc->class_by_name(cpu_model);
 }