linux-kernel - Re: [syzbot] general protection fault in dev_get_by_index

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Message-ID: <87y23r8kaa.fsf@toke.dk>
Date:   Fri, 07 Jan 2022 19:37:01 +0100
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>,
        syzbot <syzbot+983941aa85af6ded1fd9@...kaller.appspotmail.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     Andrii Nakryiko <andrii@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>, bpf <bpf@...r.kernel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        "David S. Miller" <davem@...emloft.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Martin KaFai Lau <kafai@...com>,
        KP Singh <kpsingh@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        Song Liu <songliubraving@...com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Yonghong Song <yhs@...com>
Subject: Re: [syzbot] general protection fault in dev_get_by_index_rcu (2)

Toke Høiland-Jørgensen <toke@...hat.com> writes:

> Alexei Starovoitov <alexei.starovoitov@...il.com> writes:
>
>> Toke, Jesper,
>>
>> please take a look.
>> Seems to be in your area of expertise.
>
> Yikes, I think I see the problem. Let me just confirm and I'll send a
> fix :)

Fix here: https://lore.kernel.org/r/20220107183049.311134-1-toke@redhat.com

-Toke