Re: general protection fault in nexthop_is_blackhole

From: Dmitry Vyukov
Date: Wed Nov 11 2020 - 06:19:23 EST


On Thu, Oct 1, 2020 at 5:34 PM syzbot
<syzbot+b2c08a2f5cfef635cc3a@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit eeaac3634ee0e3f35548be35275efeca888e9b23
> Author: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
> 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=116177a7900000
> 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=bb68b9e8a8cc842f
> dashboard link: https://syzkaller.appspot.com/bug?extid=b2c08a2f5cfef635cc3a
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14d75e39900000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12aea519900000
>
> 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