slab: Return NULL for oversized allocations

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / slab_common.c

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 2f0e7d5..c5d352e 100644 (file)
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -373,6 +373,9 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags)
 {
        int index;
 
+       if (WARN_ON_ONCE(size > KMALLOC_MAX_SIZE))
+               return NULL;
+
        if (size <= 192) {
                if (!size)
                        return ZERO_SIZE_PTR;