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

Eric Dumazet
2011-05-10T10:03:31Z

Le mardi 10 mai 2011 à 12:47 +0300, Pekka Enberg a écrit :
> On 5/10/11 11:43 AM, Eric Dumazet wrote:
> > I am trying to follow things but honestly I am lost.
> > Isnt commit 1759415e63 planned for 2.6.40 ?
> > ( ref :
> > http://git.kernel.org/?p=linux/kernel/git/penberg/slab-2.6.git;a=commitdiff;h=1759415e630e5db0dd2390df9f94892cbfb9a8a2 )
>
> Yes, it's for 2.6.40.
>
> > How shall we fix things for 2.6.39 ? I thought my patch was OK for that.
> >
>
> It's so late in the release cycle that I think the best option is to fix
> it in 2.6.40 and backport it to -stable together with the above commit.
>
> > Its a bit hard to work with you on this stuff, for a report I made ages
> > ago, I find it incredible its not yet fixed in linux-2.6.
>
> It's not incredible, I simply managed to miss your patch. Sorry about that.
>

Pekka, my word was probably too strong, sorry for that.

What I meant is I dont understand how Christoph expect to solve this
problem if irqsafe_cpu_cmpxchg_double() is used everywhere.