Re: [PATCH] slub: Potential stack overflow

From: Christoph Lameter
Date: Wed Mar 24 2010 - 15:16:28 EST


On Wed, 24 Mar 2010, Eric Dumazet wrote:

> I discovered that we can overflow stack if CONFIG_SLUB_DEBUG=y and use
> slabs with many objects, since list_slab_objects() and process_slab()
> use DECLARE_BITMAP(map, page->objects);

Maybe we better allocate the bitmap via kmalloc then.

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