diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 55c98f119df2..89d1011d5b32 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -51,7 +51,7 @@ static void __init of_unittest_find_node_by_name(void)
 
 	np = of_find_node_by_path("/testcase-data");
 	name = kasprintf(GFP_KERNEL, "%pOF", np);
-	unittest(np && !strcmp("/testcase-data", name),
+	unittest(np && name && !strcmp("/testcase-data", name),
 		"find /testcase-data failed\n");
 	of_node_put(np);
 	kfree(name);
@@ -62,14 +62,14 @@ static void __init of_unittest_find_node_by_name(void)
 
 	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
 	name = kasprintf(GFP_KERNEL, "%pOF", np);
-	unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
+	unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
 		"find /testcase-data/phandle-tests/consumer-a failed\n");
 	of_node_put(np);
 	kfree(name);
 
 	np = of_find_node_by_path("testcase-alias");
 	name = kasprintf(GFP_KERNEL, "%pOF", np);
-	unittest(np && !strcmp("/testcase-data", name),
+	unittest(np && name && !strcmp("/testcase-data", name),
 		"find testcase-alias failed\n");
 	of_node_put(np);
 	kfree(name);
@@ -80,7 +80,7 @@ static void __init of_unittest_find_node_by_name(void)
 
 	np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
 	name = kasprintf(GFP_KERNEL, "%pOF", np);
-	unittest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
+	unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a", name),
 		"find testcase-alias/phandle-tests/consumer-a failed\n");
 	of_node_put(np);
 	kfree(name);
@@ -966,6 +966,8 @@ static void attach_node_and_children(struct device_node *np)
 	const char *full_name;
 
 	full_name = kasprintf(GFP_KERNEL, "%pOF", np);
+	if (!full_name)
+		return;
 
 	if (!strcmp(full_name, "/__local_fixups__") ||
 	    !strcmp(full_name, "/__fixups__")) {