fix: added acquiring lock while map copy

Author: Hritik Gupta

core/iwasm/common/wasm_shared_memory.c

@@ -105,7 +105,6 @@ create_copy_of_wait_map(void *key, void *value, void *map_copy)
 void
 notify_stale_threads_on_exception(WASMModuleInstanceCommon *module_inst)
 {
-
     static HashMap *wait_map_without_lock;
     wait_map_without_lock = bh_hash_map_create(
         32, false, (HashFunc)wait_address_hash,
@@ -115,8 +114,10 @@ notify_stale_threads_on_exception(WASMModuleInstanceCommon *module_inst)
      * this allows invoking methods in the callback
      * which require acquiring lock on the original map
      */
+    os_mutex_lock(&shared_memory_list_lock);
     bh_hash_map_traverse(wait_map, create_copy_of_wait_map,
                          wait_map_without_lock);
+    os_mutex_unlock(&shared_memory_list_lock);
 
     // terminate stale threads
     bh_hash_map_traverse(wait_map_without_lock, notify_stale_threads,