linux-kernel - Re: net: use-after-free in recvmmsg

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Message-ID: <CACT4Y+bFp4mKneY3guyM1yz5+=Uhkz1K4B+_vWJBV-yLtGY39g@mail.gmail.com>
Date:	Fri, 11 Mar 2016 17:42:13 +0100
From:	Dmitry Vyukov <dvyukov@...gle.com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	syzkaller <syzkaller@...glegroups.com>,
	Kostya Serebryany <kcc@...gle.com>,
	Alexander Potapenko <glider@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: net: use-after-free in recvmmsg

On Thu, Mar 10, 2016 at 8:31 PM, Arnaldo Carvalho de Melo
<acme@...hat.com> wrote:
> Em Thu, Mar 10, 2016 at 07:35:57PM +0100, Dmitry Vyukov escreveu:
>> On Tue, Jan 26, 2016 at 8:30 PM, Arnaldo Carvalho de Melo
>> <acme@...hat.com> wrote:
>> > Em Tue, Jan 26, 2016 at 08:27:48PM +0100, Dmitry Vyukov escreveu:
>> >> On Fri, Jan 22, 2016 at 10:16 PM, Arnaldo Carvalho de Melo <acme@...hat.com> wrote:
>> >> > Em Fri, Jan 22, 2016 at 09:39:53PM +0100, Dmitry Vyukov escreveu:
>> >> >> I am on commit 30f05309bde49295e02e45c7e615f73aa4e0ccc2 (Jan 20).
>> >> >> Seems to be added in commit a2e2725541fad72416326798c2d7fa4dafb7d337
>> >> >> (Oct 2009).
>> >> >
>> >> > Maybe this helps? Compile testing now...
>> >>
>> >>
>> >> I don't have a reliable reproducer, so can't test it per se.
>> >> I will integrate this patch tomorrow and restart fuzzer with it.
>> >
>> > Thanks a lot!
>>
>> Hi Arnaldo,
>>
>> I am running with that patch since then, and did not see the bug.
>> Please mail it as a proper patch.
>
> Thanks, and I'll add a:
>
> Reported-and-Tested-by: Dmitry Vyukov <dvyukov@...gle.com>
>
> Ok?

Ok

Reported-and-Tested-by: Dmitry Vyukov <dvyukov@...gle.com>