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Date:   Mon, 27 Feb 2017 21:05:54 +0100
From:   Andrey Konovalov <>
To:     David Ahern <>
Cc:     Cong Wang <>,
        "David S. Miller" <>,
        Alexey Kuznetsov <>,
        James Morris <>,
        Hideaki YOSHIFUJI <>,
        Patrick McHardy <>,
        netdev <>,
        LKML <>,
        Dmitry Vyukov <>,
        Kostya Serebryany <>,
        syzkaller <>,
        Eric Dumazet <>
Subject: Re: net/ipv6: null-ptr-deref in ip6_route_del/lock_acquire

On Mon, Feb 27, 2017 at 8:59 PM, David Ahern <> wrote:
> On 2/27/17 10:11 AM, Cong Wang wrote:
>> The attached patch fixes this crash, but I am not sure if it is the
>> best way to fix this bug yet...
> I'll take a look. I can not reproduce this using route or ip, so the
> fuzzer is doing something interesting.

Hi David,

I've attached a simple reproducer to the report, it doesn't work for you?


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