linux-kernel - Re: KASAN: use-after-free Read in sctp_packet

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Message-ID: <A559F0F4-93AD-43E2-AFD6-7D4ABAF4E87C@gmail.com>
Date:   Sat, 06 Jan 2018 15:16:54 -0200
From:   Marcelo <marcelo.leitner@...il.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
CC:     syzbot <syzbot+5adcca18fca253b4cb15@...kaller.appspotmail.com>,
        David Miller <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>, linux-sctp@...r.kernel.org,
        netdev <netdev@...r.kernel.org>,
        Neil Horman <nhorman@...driver.com>,
        syzkaller-bugs@...glegroups.com,
        Vladislav Yasevich <vyasevich@...il.com>
Subject: Re: KASAN: use-after-free Read in sctp_packet_transmit



Em 6 de janeiro de 2018 15:09:45 BRST, Dmitry Vyukov <dvyukov@...gle.com> escreveu:
>On Sat, Jan 6, 2018 at 6:02 PM, Marcelo Ricardo Leitner
><marcelo.leitner@...il.com> wrote:
>> On Fri, Jan 05, 2018 at 02:07:01PM -0800, syzbot wrote:
>>> Hello,
>>>
>>> syzkaller hit the following crash on
>>> 8a4816cad00bf14642f0ed6043b32d29a05006ce
>>>
>git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/master
>>> compiler: gcc (GCC) 7.1.1 20170620
>>> .config is attached
>>> Raw console output is attached.
>>> Unfortunately, I don't have any reproducer for this bug yet.
>>
>> How can we tell if there wasn't any list corruption messages before
>> the panic?
>
>Hi Marcelo,
>
>syzbot always gives reports on non-tainted kernels. So, no, there was
>nothing bad before this.

OK. Thanks

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