diff --git a/modules/cas_cache/layer_cache_management.c b/modules/cas_cache/layer_cache_management.c
index 8a07d5c..4854bb0 100644
--- a/modules/cas_cache/layer_cache_management.c
+++ b/modules/cas_cache/layer_cache_management.c
@@ -1232,9 +1232,15 @@ int cache_mng_init_instance(struct ocf_mngt_cache_config *cfg,
 	}
 
 	if (cmd) {
-		ocf_volume_t cache_obj = ocf_cache_get_volume(cache);
-		struct bd_object *bd_cache_obj = bd_object(cache_obj);
-		struct block_device *bdev = bd_cache_obj->btm_bd;
+		ocf_volume_t cache_obj;
+		struct bd_object *bd_cache_obj;
+		struct block_device *bdev;
+
+		cache_obj = ocf_cache_get_volume(cache);
+		BUG_ON(!cache_obj);
+
+		bd_cache_obj = bd_object(cache_obj);
+		bdev = bd_cache_obj->btm_bd;
 
 		/* If we deal with whole device, reread partitions */
 		if (bdev->bd_contains == bdev)
@@ -1641,6 +1647,7 @@ int cache_mng_get_info(struct kcas_cache_info *info)
 
 	if (info->info.attached) {
 		uuid = ocf_cache_get_uuid(cache);
+		BUG_ON(!uuid);
 		strlcpy(info->cache_path_name, uuid->data,
 				min(sizeof(info->cache_path_name), uuid->size));
 
diff --git a/modules/cas_cache/volume/vol_block_dev_top.c b/modules/cas_cache/volume/vol_block_dev_top.c
index ee5c693..84da64a 100644
--- a/modules/cas_cache/volume/vol_block_dev_top.c
+++ b/modules/cas_cache/volume/vol_block_dev_top.c
@@ -543,6 +543,8 @@ void _blockdev_set_exported_object_flush_fua(ocf_core_t core)
 	struct request_queue *core_q, *exp_q, *cache_q;
 	bool flush, fua;
 
+	BUG_ON(!cache_vol);
+
 	bd_core_vol = bd_object(core_vol);
 	bd_cache_vol = bd_object(cache_vol);
 
@@ -624,6 +626,8 @@ static int _blockdev_set_geometry(struct casdsk_disk *dsk, void *private)
 	cache = ocf_core_get_cache(core);
 	core_vol = ocf_core_get_volume(core);
 	cache_vol = ocf_cache_get_volume(cache);
+	BUG_ON(!cache_vol);
+
 	bd_cache_vol = bd_object(cache_vol);
 	path = ocf_volume_get_uuid(core_vol)->data;
 
diff --git a/ocf b/ocf
index 0b098dd..9f927de 160000
--- a/ocf
+++ b/ocf
@@ -1 +1 @@
-Subproject commit 0b098ddb80757b9d4118904fa6bc8f445f991bb1
+Subproject commit 9f927de841e82d07fda63c5ad3536620b536f5e0