Re: KASAN: use-after-free Read in sctp_packet_transmit

[Dmitry Vyukov]

On Sat, Jan 6, 2018 at 6:02 PM, Marcelo Ricardo Leitner
<marcelo.leitner@xxxxxxxxx> 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.