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SubjectRe: your mail
Hi Joerg,

On 2/5/07, Joerg Roedel <> wrote:
> Hmm, this seems to be the same issue as in [1] and [2]. A page that is
> assumed to belong to the slab but is not longer marked as a slab page.
> Could this be a bug in the memory management?

The BUG_ON triggers whenever you feed an invalid pointer to kfree() or
kmem_cache_free() so I am guessing the caller is simply broken. Note
that kernels prior to 2.6.18 would quietly corrupt the slab unless
CONFIG_SLAB_DEBUG was enabled which might explain why this hasn't been
noticed before.

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