Re: [PATCH v2] slab: Fix nodeid bounds check for non-contiguous node IDs

[Pekka Enberg]

On 12/1/14 6:28 AM, Paul Mackerras wrote:

---
v2: include the oops message in the patch description

  mm/slab.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/slab.c b/mm/slab.c
index eb2b2ea..f34e053 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3076,7 +3076,7 @@ static void *____cache_alloc_node(struct kmem_cache 
*cachep, gfp_t flags,
        void *obj;
        int x;

- VM_BUG_ON(nodeid > num_online_nodes());

+       VM_BUG_ON(nodeid < 0 || nodeid >= MAX_NUMNODES);
        n = get_node(cachep, nodeid);
        BUG_ON(!n);

Reviewed-by: Pekka Enberg <penb...@kernel.org>

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