1 files changed, 2 insertions, 1 deletions

diff --git a/mm/slob.c b/mm/slob.c
index a886e83e17ef..de5d5563a46c 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -484,7 +484,8 @@ size_t ksize(const void *block)
 {
         struct slob_page *sp;
 
-        if (unlikely(ZERO_OR_NULL_PTR(block)))
+        BUG_ON(!block);
+        if (unlikely(block == ZERO_SIZE_PTR))
                 return 0;
 
         sp = (struct slob_page *)virt_to_page(block);