Re: [PATCH V2] slub: avoid potential NULL dereference orcorruption

[David Rientjes]

On Tue, 22 Nov 2011, Eric Dumazet wrote:

> show_slab_objects() can trigger NULL dereferences or memory corruption.
> 
> Another cpu can change its c->page to NULL or c->node to NUMA_NO_NODE
> while we use them.
> 
> Use ACCESS_ONCE(c->page) and ACCESS_ONCE(c->node) to make sure this
> cannot happen.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
> 

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
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