linux-kernel - Re: WARNING in bpf

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Message-ID: <e47e6f52-63e1-e251-fd10-5aab2abe27eb@iogearbox.net>
Date:   Thu, 12 Jul 2018 23:15:20 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Dmitry Vyukov <dvyukov@...gle.com>,
        syzbot <syzbot+7d427828b2ea6e592804@...kaller.appspotmail.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: WARNING in bpf_check

On 07/12/2018 09:51 AM, Dmitry Vyukov wrote:
> On Thu, Jul 12, 2018 at 9:41 AM, syzbot
> <syzbot+7d427828b2ea6e592804@...kaller.appspotmail.com> wrote:
>> Hello,
>>
>> syzbot found the following crash on:
>>
>> HEAD commit:    671dffa7de7b Merge branch 'bpf-bpftool-improved-prog-load'
>> git tree:       bpf-next
>> console output: https://syzkaller.appspot.com/x/log.txt?x=1550b562400000
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=a501a01deaf0fe9
>> dashboard link: https://syzkaller.appspot.com/bug?extid=7d427828b2ea6e592804
>> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)

#syz fix: bpf: don't leave partial mangled prog in jit_subprogs error path