netdev - Re: general protection fault in rt6_fill

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Date:   Wed, 11 Nov 2020 12:19:45 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+81af6e9b3c4b8bc874f8@...kaller.appspotmail.com>
Cc:     John.Linn@...inx.com, a@...table.cc,
        Anant Thazhemadam <anant.thazhemadam@...il.com>,
        Andrii Nakryiko <andriin@...com>, anirudh@...inx.com,
        Alexei Starovoitov <ast@...nel.org>,
        b.a.t.m.a.n@...ts.open-mesh.org, bpf <bpf@...r.kernel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        David Miller <davem@...emloft.net>,
        David Ahern <dsahern@...il.com>, hancock@...systems.ca,
        John Fastabend <john.fastabend@...il.com>,
        Martin KaFai Lau <kafai@...com>,
        KP Singh <kpsingh@...omium.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>, mareklindner@...mailbox.ch,
        michal.simek@...inx.com, netdev <netdev@...r.kernel.org>,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        Song Liu <songliubraving@...com>, sw@...onwunderlich.de,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Yonghong Song <yhs@...com>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
Subject: Re: general protection fault in rt6_fill_node

On Thu, Oct 1, 2020 at 8:46 PM syzbot
<syzbot+81af6e9b3c4b8bc874f8@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit eeaac3634ee0e3f35548be35275efeca888e9b23
> Author: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
> Date:   Sat Aug 22 12:06:36 2020 +0000
>
>     net: nexthop: don't allow empty NHA_GROUP
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12beed5b900000
> start commit:   c3d8f220 Merge tag 'kbuild-fixes-v5.9' of git://git.kernel..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a0437fdd630bee11
> dashboard link: https://syzkaller.appspot.com/bug?extid=81af6e9b3c4b8bc874f8
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13ff8539900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=143f3a96900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: net: nexthop: don't allow empty NHA_GROUP
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: net: nexthop: don't allow empty NHA_GROUP