netdev - Re: use-after-free in sctp_do

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Message-ID: <5660A1A7.3080301@akamai.com>
Date:	Thu, 3 Dec 2015 15:10:15 -0500
From:	Jason Baron <jbaron@...mai.com>
To:	Joe Perches <joe@...ches.com>, Aaron Conole <aconole@...hat.com>,
	Dmitry Vyukov <dvyukov@...gle.com>
Cc:	Eric Dumazet <edumazet@...gle.com>,
	syzkaller <syzkaller@...glegroups.com>,
	Vladislav Yasevich <vyasevich@...il.com>,
	linux-sctp@...r.kernel.org, netdev <netdev@...r.kernel.org>,
	Kostya Serebryany <kcc@...gle.com>,
	Alexander Potapenko <glider@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>
Subject: Re: use-after-free in sctp_do_sm



On 12/03/2015 03:03 PM, Joe Perches wrote:
> On Thu, 2015-12-03 at 14:32 -0500, Jason Baron wrote:
>> On 12/03/2015 01:52 PM, Aaron Conole wrote:
>>> I think that as a minimum, the following patch should be evaluted,
>>> but am unsure to whom I should submit it (after I test):
> []
>> Agreed - the intention here is certainly to have no side effects. It
>> looks like 'no_printk()' is used in quite a few other places that would
>> benefit from this change. So we probably want a generic
>> 'really_no_printk()' macro.
> 
> https://lkml.org/lkml/2012/6/17/231
> 

I don't see this in the tree. Also maybe we should just convert
no_printk() to do what your 'eliminated_printk()'. So we can convert all
users with this change?

Thanks,

-Jason
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