add execption check after malloc

platforms/posix/src/px4_layer/px4_posix_tasks.cpp

@@ -144,6 +144,11 @@ px4_task_t px4_task_spawn_cmd(const char *name, int scheduler, int priority, int
 
 	// not safe to pass stack data to the thread creation
 	pthdata_t *taskdata = (pthdata_t *)malloc(structsize + len);
+	
+	if (taskdata == nullptr) {
+		return -ENOMEM;			
+	}
+
 	memset(taskdata, 0, structsize + len);
 	unsigned long offset = ((unsigned long)taskdata) + structsize;
 

platforms/qurt/src/px4_layer/px4_qurt_tasks.cpp

@@ -147,6 +147,11 @@ px4_task_t px4_task_spawn_cmd(const char *name, int scheduler, int priority, int
 
 	// not safe to pass stack data to the thread creation
 	taskdata = (pthdata_t *)malloc(structsize + len);
+
+	if (taskdata == nullptr) {
+		return -ENOMEM;			
+	}
+
 	offset = ((unsigned long)taskdata) + structsize;
 
 	taskdata->entry = entry;