linux-kernel - Re: general protection fault in hash_net4

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Message-ID: <20200108095313.GW795@breakpoint.cc>
Date:   Wed, 8 Jan 2020 10:53:13 +0100
From:   Florian Westphal <fw@...len.de>
To:     syzbot <syzbot+b8e32edde51fdcc8c2c4@...kaller.appspotmail.com>
Cc:     coreteam@...filter.org, davem@...emloft.net, fw@...len.de,
        gregkh@...uxfoundation.org, info@...ux.net, jeremy@...zel.net,
        kadlec@...ckhole.kfki.hu, kadlec@...filter.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de
Subject: Re: general protection fault in hash_net4_uadt

syzbot <syzbot+b8e32edde51fdcc8c2c4@...kaller.appspotmail.com> wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    c101fffc Merge tag 'mlx5-fixes-2020-01-06' of git://git.ke..
> git tree:       net
> console output: https://syzkaller.appspot.com/x/log.txt?x=1452e656e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=f2f3ef188b7e16cf
> dashboard link: https://syzkaller.appspot.com/bug?extid=b8e32edde51fdcc8c2c4
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17ef2459e00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=113b9459e00000
> 
> The bug was bisected to:

#syz dup: general protection fault in hash_ipportnet4_uadt