staging: zcache: fix memory leak

obj is not freed if __get_free_page() failed.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/zcache/zcache.c b/drivers/staging/zcache/zcache.c
index 61be849..b8a2b30 100644 (file)
--- a/drivers/staging/zcache/zcache.c
+++ b/drivers/staging/zcache/zcache.c
@@ -790,6 +790,7 @@ static int zcache_do_preload(struct tmem_pool *pool)
        page = (void *)__get_free_page(ZCACHE_GFP_MASK);
        if (unlikely(page == NULL)) {
                zcache_failed_get_free_pages++;
+               kmem_cache_free(zcache_obj_cache, obj);
                goto unlock_out;
        }
        preempt_disable();