diff --git a/tests/unit/tests/cleaning/alru.c/cleaning_policy_alru_initialize_part_test.c b/tests/unit/tests/cleaning/alru.c/cleaning_policy_alru_initialize_part_test.c
index 53bc9b8..f1361e9 100644
--- a/tests/unit/tests/cleaning/alru.c/cleaning_policy_alru_initialize_part_test.c
+++ b/tests/unit/tests/cleaning/alru.c/cleaning_policy_alru_initialize_part_test.c
@@ -40,66 +40,70 @@
 
 static void cleaning_policy_alru_initialize_test01(void **state)
 {
-        int result;
-        struct ocf_cache cache;
-        ocf_part_id_t part_id = 0;
+	int result;
+	struct ocf_cache *cache;
+	ocf_part_id_t part_id = 0;
 
-        int collision_table_entries = 900729;
+	int collision_table_entries = 900729;
 
-        print_test_description("Check if all variables are set correctly");
+	print_test_description("Check if all variables are set correctly");
 
-        cache.user_parts[part_id].runtime = test_malloc(sizeof(struct ocf_user_part_runtime));
-        cache.device = test_malloc(sizeof(struct ocf_cache_device));
-        cache.device->runtime_meta = test_malloc(sizeof(struct ocf_superblock_runtime));
+	cache = test_malloc(sizeof(*cache));
+	cache->user_parts[part_id].runtime = test_malloc(sizeof(struct ocf_user_part_runtime));
+	cache->device = test_malloc(sizeof(struct ocf_cache_device));
+	cache->device->runtime_meta = test_malloc(sizeof(struct ocf_superblock_runtime));
 
-        cache.device->collision_table_entries = collision_table_entries;
+	cache->device->collision_table_entries = collision_table_entries;
 
-        result = cleaning_policy_alru_initialize_part(&cache, &cache.user_parts[part_id], 1, 1);
+	result = cleaning_policy_alru_initialize_part(cache, &cache->user_parts[part_id], 1, 1);
 
-        assert_int_equal(result, 0);
+	assert_int_equal(result, 0);
 
-        assert_int_equal(env_atomic_read(&cache.user_parts[part_id].runtime->cleaning.policy.alru.size), 0);
-        assert_int_equal(cache.user_parts[part_id].runtime->cleaning.policy.alru.lru_head, collision_table_entries);
-        assert_int_equal(cache.user_parts[part_id].runtime->cleaning.policy.alru.lru_tail, collision_table_entries);
+	assert_int_equal(env_atomic_read(&cache->user_parts[part_id].runtime->cleaning.policy.alru.size), 0);
+	assert_int_equal(cache->user_parts[part_id].runtime->cleaning.policy.alru.lru_head, collision_table_entries);
+	assert_int_equal(cache->user_parts[part_id].runtime->cleaning.policy.alru.lru_tail, collision_table_entries);
 
-        assert_int_equal(cache.device->runtime_meta->cleaning_thread_access, 0);
+	assert_int_equal(cache->device->runtime_meta->cleaning_thread_access, 0);
 
-        test_free(cache.device->runtime_meta);
-        test_free(cache.device);
-        test_free(cache.user_parts[part_id].runtime);
+	test_free(cache->device->runtime_meta);
+	test_free(cache->device);
+	test_free(cache->user_parts[part_id].runtime);
+	test_free(cache);
 }
 
 static void cleaning_policy_alru_initialize_test02(void **state)
 {
-        int result;
-        struct ocf_cache cache;
-        ocf_part_id_t part_id = 0;
+	int result;
+	struct ocf_cache *cache;
+	ocf_part_id_t part_id = 0;
 
-        uint32_t collision_table_entries = 900729;
+	uint32_t collision_table_entries = 900729;
 
-        print_test_description("Check if only appropirate variables are changed");
+	print_test_description("Check if only appropirate variables are changed");
 
-        cache.user_parts[part_id].runtime = test_malloc(sizeof(struct ocf_user_part_runtime));
-        cache.device = test_malloc(sizeof(struct ocf_cache_device));
-        cache.device->runtime_meta = test_malloc(sizeof(struct ocf_superblock_runtime));
+	cache = test_malloc(sizeof(*cache));
+	cache->user_parts[part_id].runtime = test_malloc(sizeof(struct ocf_user_part_runtime));
+	cache->device = test_malloc(sizeof(struct ocf_cache_device));
+	cache->device->runtime_meta = test_malloc(sizeof(struct ocf_superblock_runtime));
 
-        env_atomic_set(&cache.user_parts[part_id].runtime->cleaning.policy.alru.size, 1);
-        cache.user_parts[part_id].runtime->cleaning.policy.alru.lru_head = -collision_table_entries;
-        cache.user_parts[part_id].runtime->cleaning.policy.alru.lru_tail = -collision_table_entries;
+	env_atomic_set(&cache->user_parts[part_id].runtime->cleaning.policy.alru.size, 1);
+	cache->user_parts[part_id].runtime->cleaning.policy.alru.lru_head = -collision_table_entries;
+	cache->user_parts[part_id].runtime->cleaning.policy.alru.lru_tail = -collision_table_entries;
 
-        result = cleaning_policy_alru_initialize_part(&cache, &cache.user_parts[part_id], 0, 0);
+	result = cleaning_policy_alru_initialize_part(cache, cache->user_parts[part_id], 0, 0);
 
-        assert_int_equal(result, 0);
+	assert_int_equal(result, 0);
 
-        assert_int_equal(env_atomic_read(&cache.user_parts[part_id].runtime->cleaning.policy.alru.size), 1);
-        assert_int_equal(cache.user_parts[part_id].runtime->cleaning.policy.alru.lru_head, -collision_table_entries);
-        assert_int_equal(cache.user_parts[part_id].runtime->cleaning.policy.alru.lru_tail, -collision_table_entries);
+	assert_int_equal(env_atomic_read(&cache->user_parts[part_id].runtime->cleaning.policy.alru.size), 1);
+	assert_int_equal(cache->user_parts[part_id].runtime->cleaning.policy.alru.lru_head, -collision_table_entries);
+	assert_int_equal(cache->user_parts[part_id].runtime->cleaning.policy.alru.lru_tail, -collision_table_entries);
 
-        assert_int_equal(cache.device->runtime_meta->cleaning_thread_access, 0);
+	assert_int_equal(cache->device->runtime_meta->cleaning_thread_access, 0);
 
-        test_free(cache.device->runtime_meta);
-        test_free(cache.device);
-        test_free(cache.user_parts[part_id].runtime);
+	test_free(cache->device->runtime_meta);
+	test_free(cache->device);
+	test_free(cache->user_parts[part_id].runtime);
+	test_free(cache);
 }
 
 /*
@@ -107,14 +111,14 @@ static void cleaning_policy_alru_initialize_test02(void **state)
  */
 int main(void)
 {
-        const struct CMUnitTest tests[] = {
-                cmocka_unit_test(cleaning_policy_alru_initialize_test01),
-                cmocka_unit_test(cleaning_policy_alru_initialize_test02)
-        };
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(cleaning_policy_alru_initialize_test01),
+		cmocka_unit_test(cleaning_policy_alru_initialize_test02)
+	};
 
-        print_message("Unit test of alru.c\n");
+	print_message("Unit test of alru.c\n");
 
-        return cmocka_run_group_tests(tests, NULL, NULL);
+	return cmocka_run_group_tests(tests, NULL, NULL);
 }
 
 
diff --git a/tests/unit/tests/cleaning/cleaning.c/ocf_cleaner_run_test.c b/tests/unit/tests/cleaning/cleaning.c/ocf_cleaner_run_test.c
index 295ac69..9a7f618 100644
--- a/tests/unit/tests/cleaning/cleaning.c/ocf_cleaner_run_test.c
+++ b/tests/unit/tests/cleaning/cleaning.c/ocf_cleaner_run_test.c
@@ -103,20 +103,22 @@ static void cleaner_complete(ocf_cleaner_t cleaner, uint32_t interval)
 
 static void ocf_cleaner_run_test01(void **state)
 {
-	struct ocf_cache cache;
+	struct ocf_cache *cache;
 	ocf_part_id_t part_id;
 	uint32_t io_queue;
 	int result;
 
-	//Initialize needed structures.
-	cache.conf_meta = test_malloc(sizeof(struct ocf_superblock_config));
-	cache.conf_meta->cleaning_policy_type = ocf_cleaning_alru;
-
 	print_test_description("Parts are ready for cleaning - should perform cleaning"
 			" for each part");
 
+	//Initialize needed structures.
+	cache = test_malloc(sizeof(*cache));
+	cache->conf_meta = test_malloc(sizeof(struct ocf_superblock_config));
+	cache->conf_meta->cleaning_policy_type = ocf_cleaning_alru;
+
+
 	expect_function_call(__wrap_ocf_cleaner_get_cache);
-	will_return(__wrap_ocf_cleaner_get_cache, &cache);
+	will_return(__wrap_ocf_cleaner_get_cache, cache);
 
 	expect_function_call(__wrap_env_bit_test);
 	will_return(__wrap_env_bit_test, 1);
@@ -133,13 +135,14 @@ static void ocf_cleaner_run_test01(void **state)
 	expect_function_call(__wrap_cleaning_alru_perform_cleaning);
 	will_return(__wrap_cleaning_alru_perform_cleaning, 0);
 
-	ocf_cleaner_set_cmpl(&cache.cleaner, cleaner_complete);
+	ocf_cleaner_set_cmpl(&cache->cleaner, cleaner_complete);
 
-	ocf_cleaner_run(&cache.cleaner, 0xdeadbeef);
+	ocf_cleaner_run(&cache->cleaner, 0xdeadbeef);
 
 	/* Release allocated memory if allocated with test_* functions */
 
-	test_free(cache.conf_meta);
+	test_free(cache->conf_meta);
+	test_free(cache);
 }
 
 /*
diff --git a/tests/unit/tests/concurrency/ocf_metadata_concurrency.c/ocf_metadata_concurrency.c b/tests/unit/tests/concurrency/ocf_metadata_concurrency.c/ocf_metadata_concurrency.c
index 8c1da52..72fe4c6 100644
--- a/tests/unit/tests/concurrency/ocf_metadata_concurrency.c/ocf_metadata_concurrency.c
+++ b/tests/unit/tests/concurrency/ocf_metadata_concurrency.c/ocf_metadata_concurrency.c
@@ -35,15 +35,21 @@ void __wrap_ocf_metadata_hash_lock(struct ocf_metadata_lock *metadata_lock,
 static struct ocf_request *alloc_req()
 {
 	struct ocf_request *req;
-	struct ocf_cache *cache = malloc(sizeof(*cache));
+	struct ocf_cache *cache = test_malloc(sizeof(*cache));
 
-	req = malloc(sizeof(*req) + MAP_SIZE * sizeof(req->map[0]));
+	req = test_malloc(sizeof(*req) + MAP_SIZE * sizeof(req->map[0]));
 	req->map = req->__map;
 	req->cache = cache;
 
 	return req;
 }
 
+static void free_req(struct ocf_request *req)
+{
+	test_free(req->cache);
+	test_free(req);
+}
+
 static void _test_lock_order(struct ocf_request* req,
 		unsigned hash[], unsigned hash_count,
 		unsigned expected_call[], unsigned expected_call_count)
@@ -114,8 +120,7 @@ static void ocf_req_hash_lock_rd_test01(void **state)
 				 test_cases[i].expected_call.val, test_cases[i].expected_call.count);
 	}
 
-	free(req->cache);
-	free(req);
+	free_req(req);
 }
 
 int main(void)
diff --git a/tests/unit/tests/metadata/metadata_collision.c/metadata_collision.c b/tests/unit/tests/metadata/metadata_collision.c/metadata_collision.c
index 2f7309a..7f83ca9 100644
--- a/tests/unit/tests/metadata/metadata_collision.c/metadata_collision.c
+++ b/tests/unit/tests/metadata/metadata_collision.c/metadata_collision.c
@@ -25,7 +25,7 @@
 
 static void metadata_hash_func_test01(void **state)
 {
-	struct ocf_cache cache;
+	struct ocf_cache *cache;
 	bool wrap = false;
 	ocf_cache_line_t i;
 	ocf_cache_line_t hash_cur, hash_next;
@@ -36,21 +36,25 @@ static void metadata_hash_func_test01(void **state)
 	print_test_description("Verify that hash function increments by 1 and generates"
 				"collision after 'hash_table_entries' successive core lines");
 
-	cache.device = malloc(sizeof(*cache.device));
-	cache.device->hash_table_entries = 10;
+	cache = test_malloc(sizeof(*cache));
+	cache->device = test_malloc(sizeof(*cache->device));
+	cache->device->hash_table_entries = 10;
 
 	for (c = 0; c < sizeof(core_ids) / sizeof(core_ids[0]); c++) {
 		core_id = core_ids[c];
-		for (i = 0; i < cache.device->hash_table_entries + 1; i++) {
-			hash_cur = ocf_metadata_hash_func(&cache, i, core_id);
-			hash_next = ocf_metadata_hash_func(&cache, i + 1, core_id);
+		for (i = 0; i < cache->device->hash_table_entries + 1; i++) {
+			hash_cur = ocf_metadata_hash_func(cache, i, core_id);
+			hash_next = ocf_metadata_hash_func(cache, i + 1, core_id);
 			/* make sure hash value is within expected range */
-			assert(hash_cur < cache.device->hash_table_entries);
-			assert(hash_next < cache.device->hash_table_entries);
+			assert(hash_cur < cache->device->hash_table_entries);
+			assert(hash_next < cache->device->hash_table_entries);
 			/* hash should either increment by 1 or overflow to 0 */
-			assert(hash_next == (hash_cur + 1) % cache.device->hash_table_entries);
+			assert(hash_next == (hash_cur + 1) % cache->device->hash_table_entries);
 		}
 	}
+
+	test_free(cache->device);
+	test_free(cache);
 }
 
 int main(void)
diff --git a/tests/unit/tests/mngt/ocf_mngt_cache.c/_cache_mngt_set_cache_mode_test.c b/tests/unit/tests/mngt/ocf_mngt_cache.c/_cache_mngt_set_cache_mode_test.c
index 7b61e14..fc74bb8 100644
--- a/tests/unit/tests/mngt/ocf_mngt_cache.c/_cache_mngt_set_cache_mode_test.c
+++ b/tests/unit/tests/mngt/ocf_mngt_cache.c/_cache_mngt_set_cache_mode_test.c
@@ -104,21 +104,24 @@ static void _cache_mngt_set_cache_mode_test01(void **state)
 	struct ocf_superblock_config sb_config = {
 		.cache_mode = mode_old,
 	};
-	struct ocf_cache cache = {
-		.owner = &ctx,
-		.conf_meta = &sb_config,
-	};
+	struct ocf_cache *cache;
 	int result;
 
 	print_test_description("Invalid new mode produces appropirate error code");
 
+	cache = test_malloc(sizeof(*cache));
+	cache->owner = &ctx;
+	cache->conf_meta = &sb_config;
+
 	expect_function_call(__wrap_ocf_cache_mode_is_valid);
 	will_return(__wrap_ocf_cache_mode_is_valid, 0);
 
-	result = _cache_mngt_set_cache_mode(&cache, mode_new);
+	result = _cache_mngt_set_cache_mode(cache, mode_new);
 
 	assert_int_equal(result, -OCF_ERR_INVAL);
-	assert_int_equal(cache.conf_meta->cache_mode, mode_old);
+	assert_int_equal(cache->conf_meta->cache_mode, mode_old);
+
+	test_free(cache);
 }
 
 static void _cache_mngt_set_cache_mode_test02(void **state)
@@ -131,25 +134,28 @@ static void _cache_mngt_set_cache_mode_test02(void **state)
 	struct ocf_superblock_config sb_config = {
 		.cache_mode = mode_old,
 	};
-	struct ocf_cache cache = {
-		.owner = &ctx,
-		.conf_meta = &sb_config,
-	};
+	struct ocf_cache *cache;
 	uint8_t flush = 0;
 	int result;
 
 	print_test_description("Attempt to set mode the same as previous");
 
+	cache = test_malloc(sizeof(*cache));
+	cache->owner = &ctx;
+	cache->conf_meta = &sb_config;
+
 	expect_function_call(__wrap_ocf_cache_mode_is_valid);
 	will_return(__wrap_ocf_cache_mode_is_valid, 1);
 
 	expect_function_call(__wrap_ocf_log_raw);
 	will_return(__wrap_ocf_log_raw, 0);
 
-	result = _cache_mngt_set_cache_mode(&cache, mode_new);
+	result = _cache_mngt_set_cache_mode(cache, mode_new);
 
 	assert_int_equal(result, 0);
-	assert_int_equal(cache.conf_meta->cache_mode, mode_old);
+	assert_int_equal(cache->conf_meta->cache_mode, mode_old);
+
+	test_free(cache);
 }
 
 static void _cache_mngt_set_cache_mode_test03(void **state)
@@ -162,16 +168,17 @@ static void _cache_mngt_set_cache_mode_test03(void **state)
 	struct ocf_superblock_config sb_config = {
 		.cache_mode = mode_old,
 	};
-	struct ocf_cache cache = {
-		.owner = &ctx,
-		.conf_meta = &sb_config,
-	};
+	struct ocf_cache *cache;
 	int result;
 	int i;
 
 	print_test_description("Old cache mode is write back. "
 		       "Setting new cache mode is succesfull");
 
+	cache = test_malloc(sizeof(*cache));
+	cache->owner = &ctx;
+	cache->conf_meta = &sb_config;
+
 	expect_function_call(__wrap_ocf_cache_mode_is_valid);
 	will_return(__wrap_ocf_cache_mode_is_valid, 1);
 
@@ -180,10 +187,12 @@ static void _cache_mngt_set_cache_mode_test03(void **state)
 	expect_function_call(__wrap_ocf_log_raw);
 	will_return(__wrap_ocf_log_raw, 0);
 
-	result = _cache_mngt_set_cache_mode(&cache, mode_new);
+	result = _cache_mngt_set_cache_mode(cache, mode_new);
 
 	assert_int_equal(result, 0);
-	assert_int_equal(cache.conf_meta->cache_mode, mode_new);
+	assert_int_equal(cache->conf_meta->cache_mode, mode_new);
+
+	test_free(cache);
 }
 
 static void _cache_mngt_set_cache_mode_test04(void **state)
@@ -196,25 +205,28 @@ static void _cache_mngt_set_cache_mode_test04(void **state)
 	struct ocf_superblock_config sb_config = {
 		.cache_mode = mode_old,
 	};
-	struct ocf_cache cache = {
-		.owner = &ctx,
-		.conf_meta = &sb_config,
-	};
+	struct ocf_cache *cache;
 	int result;
 	int i;
 
 	print_test_description("Mode changed successfully");
 
+	cache = test_malloc(sizeof(*cache));
+	cache->owner = &ctx;
+	cache->conf_meta = &sb_config;
+
 	expect_function_call(__wrap_ocf_cache_mode_is_valid);
 	will_return(__wrap_ocf_cache_mode_is_valid, 1);
 
 	expect_function_call(__wrap_ocf_log_raw);
 	will_return(__wrap_ocf_log_raw, 0);
 
-	result = _cache_mngt_set_cache_mode(&cache, mode_new);
+	result = _cache_mngt_set_cache_mode(cache, mode_new);
 
 	assert_int_equal(result, 0);
-	assert_int_equal(cache.conf_meta->cache_mode, mode_new);
+	assert_int_equal(cache->conf_meta->cache_mode, mode_new);
+
+	test_free(cache);
 }
 
 /*
diff --git a/tests/unit/tests/mngt/ocf_mngt_cache.c/ocf_mngt_cache_set_fallback_pt_error_threshold.c b/tests/unit/tests/mngt/ocf_mngt_cache.c/ocf_mngt_cache_set_fallback_pt_error_threshold.c
index dbf0e5b..e14b6aa 100644
--- a/tests/unit/tests/mngt/ocf_mngt_cache.c/ocf_mngt_cache_set_fallback_pt_error_threshold.c
+++ b/tests/unit/tests/mngt/ocf_mngt_cache.c/ocf_mngt_cache_set_fallback_pt_error_threshold.c
@@ -54,108 +54,124 @@ int __wrap_ocf_mngt_cache_set_fallback_pt(ocf_cache_t cache)
 
 static void ocf_mngt_cache_set_fallback_pt_error_threshold_test01(void **state)
 {
-	struct ocf_cache cache;
+	struct ocf_cache *cache;
 	int new_threshold;
 	int result;
 
 	print_test_description("Appropriate error code on invalid threshold value");
 
+	cache = test_malloc(sizeof(*cache));
+
 	new_threshold = -1;
 
-	result = ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	result = ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
 	assert_int_equal(result, -OCF_ERR_INVAL);
 
 
 	new_threshold = 10000001;
 
-	result = ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	result = ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
 	assert_int_equal(result, -OCF_ERR_INVAL);
+
+	test_free(cache);
 }
 
 static void ocf_mngt_cache_set_fallback_pt_error_threshold_test02(void **state)
 {
-	struct ocf_cache cache;
+	struct ocf_cache *cache;
 	int new_threshold;
 	int old_threshold;
 
 	print_test_description("Invalid new threshold value doesn't change current threshold");
 
+	cache = test_malloc(sizeof(*cache));
+
 	new_threshold = -1;
-	old_threshold = cache.fallback_pt_error_threshold = 1000;
+	old_threshold = cache->fallback_pt_error_threshold = 1000;
 
-	ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
-	assert_int_equal(cache.fallback_pt_error_threshold, old_threshold);
+	assert_int_equal(cache->fallback_pt_error_threshold, old_threshold);
 
 
 	new_threshold = 10000001;
-	old_threshold = cache.fallback_pt_error_threshold = 1000;
+	old_threshold = cache->fallback_pt_error_threshold = 1000;
 
-	ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
-	assert_int_equal(cache.fallback_pt_error_threshold, old_threshold);
+	assert_int_equal(cache->fallback_pt_error_threshold, old_threshold);
+
+	test_free(cache);
 }
 
 static void ocf_mngt_cache_set_fallback_pt_error_threshold_test03(void **state)
 {
-	struct ocf_cache cache;
+	struct ocf_cache *cache;
 	int new_threshold, old_threshold;
 
 	print_test_description("Setting new threshold value");
 
+	cache = test_malloc(sizeof(*cache));
+
 	new_threshold = 5000;
-	old_threshold = cache.fallback_pt_error_threshold = 1000;
+	old_threshold = cache->fallback_pt_error_threshold = 1000;
 
-	ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
-	assert_int_equal(cache.fallback_pt_error_threshold, new_threshold);
+	assert_int_equal(cache->fallback_pt_error_threshold, new_threshold);
 
 
 	new_threshold = 1000000;
-	old_threshold = cache.fallback_pt_error_threshold = 1000;
+	old_threshold = cache->fallback_pt_error_threshold = 1000;
 
-	ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
-	assert_int_equal(cache.fallback_pt_error_threshold, new_threshold);
+	assert_int_equal(cache->fallback_pt_error_threshold, new_threshold);
 
 
 	new_threshold = 0;
-	old_threshold = cache.fallback_pt_error_threshold = 1000;
+	old_threshold = cache->fallback_pt_error_threshold = 1000;
 
-	ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
-	assert_int_equal(cache.fallback_pt_error_threshold, new_threshold);
+	assert_int_equal(cache->fallback_pt_error_threshold, new_threshold);
+
+	test_free(cache);
 }
 
 static void ocf_mngt_cache_set_fallback_pt_error_threshold_test04(void **state)
 {
-	struct ocf_cache cache;
+	struct ocf_cache *cache;
 	int new_threshold;
 	int result;
 
 	print_test_description("Return appropriate value on success");
 
+	cache = test_malloc(sizeof(*cache));
+
 	new_threshold = 5000;
 
-	result = ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	result = ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
 	assert_int_equal(result, 0);
 
 
 	new_threshold = 1000000;
 
-	result = ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	result = ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
-	assert_int_equal(cache.fallback_pt_error_threshold, new_threshold);
+	assert_int_equal(cache->fallback_pt_error_threshold, new_threshold);
 
 
 	new_threshold = 0;
 
-	result = ocf_mngt_cache_set_fallback_pt_error_threshold(&cache, new_threshold);
+	result = ocf_mngt_cache_set_fallback_pt_error_threshold(cache, new_threshold);
 
 	assert_int_equal(result, 0);
+
+	test_free(cache);
 }
 
 int main(void)
diff --git a/tests/unit/tests/mngt/ocf_mngt_io_class.c/ocf_mngt_io_class.c b/tests/unit/tests/mngt/ocf_mngt_io_class.c/ocf_mngt_io_class.c
index f5e1d0f..1abec16 100644
--- a/tests/unit/tests/mngt/ocf_mngt_io_class.c/ocf_mngt_io_class.c
+++ b/tests/unit/tests/mngt/ocf_mngt_io_class.c/ocf_mngt_io_class.c
@@ -105,20 +105,22 @@ static inline void setup_valid_config(struct ocf_mngt_io_class_config *cfg,
 
 static void ocf_mngt_io_classes_configure_test03(void **state)
 {
-	struct ocf_cache cache = {0};
+	struct ocf_cache *cache;
 	struct ocf_mngt_io_classes_config cfg = {0};
 	int result, i;
 
+	print_test_description("Remove all io classes");
+
+	cache = test_malloc(sizeof(*cache));
+
 	for (i = 0; i < OCF_IO_CLASS_MAX; i++) {
-		cache.user_parts[i].config =
+		cache->user_parts[i].config =
 				test_malloc(sizeof(struct ocf_user_part_config));
 	}
-	cache.device = 1;
+	cache->device = 1;
 
 	setup_valid_config(cfg.config, true);
 
-	print_test_description("Remove all io classes");
-
 	for (i = 0; i < OCF_IO_CLASS_MAX; i++) {
 		expect_function_call(__wrap__ocf_mngt_io_class_validate_cfg);
 		will_return(__wrap__ocf_mngt_io_class_validate_cfg, 0);
@@ -138,25 +140,29 @@ static void ocf_mngt_io_classes_configure_test03(void **state)
 
 	expect_function_call(__wrap_ocf_part_sort);
 
-	result = ocf_mngt_cache_io_classes_configure(&cache, &cfg);
+	result = ocf_mngt_cache_io_classes_configure(cache, &cfg);
 
 	assert_int_equal(result, 0);
 
 	for (i = 0; i < OCF_IO_CLASS_MAX; i++)
-		test_free(cache.user_parts[i].config);
+		test_free(cache->user_parts[i].config);
+
+	test_free(cache);
 }
 
 static void ocf_mngt_io_classes_configure_test02(void **state)
 {
-	struct ocf_cache cache = {0};
+	struct ocf_cache *cache;
 	struct ocf_mngt_io_classes_config cfg = {0};
 	int result, i;
 
+	cache = test_malloc(sizeof(*cache));
+
 	for (i = 0; i < OCF_IO_CLASS_MAX; i++) {
-		cache.user_parts[i].config =
+		cache->user_parts[i].config =
 				test_malloc(sizeof(struct ocf_user_part_config));
 	}
-	cache.device = 1;
+	cache->device = 1;
 
 	setup_valid_config(cfg.config, false);
 
@@ -197,17 +203,19 @@ static void ocf_mngt_io_classes_configure_test02(void **state)
 
 	expect_function_call(__wrap_ocf_part_sort);
 
-	result = ocf_mngt_cache_io_classes_configure(&cache, &cfg);
+	result = ocf_mngt_cache_io_classes_configure(cache, &cfg);
 
 	assert_int_equal(result, 0);
 
 	for (i = 0; i < OCF_IO_CLASS_MAX; i++)
-		test_free(cache.user_parts[i].config);
+		test_free(cache->user_parts[i].config);
+
+	test_free(cache);
 }
 
 static void ocf_mngt_io_classes_configure_test01(void **state)
 {
-	struct ocf_cache cache;
+	struct ocf_cache *cache;
 	struct ocf_mngt_io_classes_config cfg[OCF_IO_CLASS_MAX];
 	int error_code = -OCF_ERR_INVAL;
 	int result;
@@ -215,12 +223,16 @@ static void ocf_mngt_io_classes_configure_test01(void **state)
 	print_test_description("Invalid config - "
 		   "termination with error");
 
+	cache = test_malloc(sizeof(*cache));
+
 	expect_function_call(__wrap__ocf_mngt_io_class_validate_cfg);
 	will_return(__wrap__ocf_mngt_io_class_validate_cfg, error_code);
 
-	result = ocf_mngt_cache_io_classes_configure(&cache, &cfg);
+	result = ocf_mngt_cache_io_classes_configure(cache, &cfg);
 
 	assert_int_equal(result, error_code);
+
+	test_free(cache);
 }
 
 int main(void)