linux-kernel - Re: general protection fault in nexthop_is

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Date:   Thu, 01 Oct 2020 08:34:05 -0700
From:   syzbot <syzbot+b2c08a2f5cfef635cc3a@...kaller.appspotmail.com>
To:     a@...table.cc, anant.thazhemadam@...il.com, andriin@...com,
        anmol.karan123@...il.com, ast@...nel.org,
        b.a.t.m.a.n@...ts.open-mesh.org, bpf@...r.kernel.org,
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        hariprasad.kelam@...il.com, herbert@...dor.apana.org.au,
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        kuba@...nel.org, kuznet@....inr.ac.ru,
        linux-kernel@...r.kernel.org, mareklindner@...mailbox.ch,
        netdev@...r.kernel.org, nikolay@...ulusnetworks.com,
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        yoshfuji@...ux-ipv6.org
Subject: Re: general protection fault in nexthop_is_blackhole

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=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