Re: [Bugme-new] [Bug 33502] New: Caught 64-bit read from uninitialized memory in __alloc_skb

Christoph Lameter
2011-05-10T16:33:13Z

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On Tue, 10 May 2011, Pekka Enberg wrote:

> On 5/10/11 1:17 PM, Eric Dumazet wrote:
> > Le mardi 10 mai 2011 à 13:03 +0300, Pekka Enberg a écrit :
> >
> > > Can't we fix the issue by putting kmemcheck_mark_initialized() to
> > > set_freepointer()?
> >
> > This would solve kmemcheck problem, not DEBUG_PAGEALLOC
>
> Oh, right. Christoph? We need to support DEBUG_PAGEALLOC with SLUB.

Well back to the #ifdef then? Or has DEBUG_PAGEALLOC some override
mechanism that we can do a speculative memory access?