netdev - Re: net: heap out-of-bounds in fib6_clean_node/rt6_fill_node/fib6_age/fib6_prune

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Message-ID: <CAAeHK+yzCYZ+OU+eTpNLy-_X=7HSNUDML6jcVBKK9sxJ2ByORg@mail.gmail.com>
Date:   Thu, 20 Apr 2017 17:39:14 +0200
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     David Ahern <dsa@...ulusnetworks.com>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Mahesh Bandewar <maheshb@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        David Miller <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        James Morris <jmorris@...ei.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Patrick McHardy <kaber@...sh.net>,
        netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: net: heap out-of-bounds in fib6_clean_node/rt6_fill_node/fib6_age/fib6_prune_clone

On Thu, Apr 20, 2017 at 5:35 PM, David Ahern <dsa@...ulusnetworks.com> wrote:
> On 4/20/17 9:28 AM, Andrey Konovalov wrote:
>> This one seems to be much closer to what Dmitry reported intially.
>
> does not repro here; I ran in a loop and nothing.

You use the attached config, right?

>
> can you send output of "sysctl -a --pattern 'net.ipv6'"

Uploaded here:
https://gist.github.com/xairy/7b6988c9cd8fda5458005df05584ff27