Messages in this thread | | | Date | Tue, 22 Nov 2011 21:30:00 -0800 (PST) | From | David Rientjes <> | Subject | Re: [PATCH V2] slub: avoid potential NULL dereference or corruption |
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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@gmail.com> >
Acked-by: David Rientjes <rientjes@google.com>
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