netdev - Re: [syzbot] WARNING in bpf_warn_invalid_xdp

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Date:   Wed, 16 Feb 2022 16:33:27 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+8ce4113dadc4789fac74@...kaller.appspotmail.com>
Cc:     andrii@...nel.org, andriin@...com, ast@...nel.org,
        bpf@...r.kernel.org, corbet@....net, daniel@...earbox.net,
        davem@...emloft.net, dsahern@...il.com, eric.dumazet@...il.com,
        hawk@...nel.org, john.fastabend@...il.com, kafai@...com,
        kpsingh@...nel.org, kuba@...nel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        pabeni@...hat.com, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, toke@...hat.com, yhs@...com
Subject: Re: [syzbot] WARNING in bpf_warn_invalid_xdp_action

On Thu, 10 Feb 2022 at 10:29, syzbot
<syzbot+8ce4113dadc4789fac74@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 2cbad989033bff0256675c38f96f5faab852af4b
> Author: Paolo Abeni <pabeni@...hat.com>
> Date:   Tue Nov 30 10:08:06 2021 +0000
>
>     bpf: Do not WARN in bpf_warn_invalid_xdp_action()
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10d50baa700000
> start commit:   b3c8e0de473e Merge branch '40GbE' of git://git.kernel.org/..
> git tree:       net
> kernel config:  https://syzkaller.appspot.com/x/.config?x=1a86c22260afac2f
> dashboard link: https://syzkaller.appspot.com/bug?extid=8ce4113dadc4789fac74
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=113c8a3bb00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16eb4307b00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: bpf: Do not WARN in bpf_warn_invalid_xdp_action()

Looks legit:

#syz fix: bpf: Do not WARN in bpf_warn_invalid_xdp_action()