linux-kernel - Re: WARNING in static_key_disable

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Date:   Sat, 17 Nov 2018 09:08:09 -0800
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        syzbot+6cffdef928852907751c@...kaller.appspotmail.com,
        "David S. Miller" <davem@...emloft.net>,
        Borislav Petkov <bp@...e.de>, Jason Baron <jbaron@...mai.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        syzkaller-bugs@...glegroups.com,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: WARNING in static_key_disable_cpuslocked

On Sat, Nov 17, 2018 at 8:25 AM, Paolo Abeni <pabeni@...hat.com> wrote:
> Hi,
>
> On Sat, 2018-11-17 at 06:52 -0800, Ard Biesheuvel wrote:
>> (+ Paolo, Dave)
>>
>> On Sat, 17 Nov 2018 at 01:59, syzbot
>> <syzbot+6cffdef928852907751c@...kaller.appspotmail.com> wrote:
>> >
>> > Hello,
>> >
>> > syzbot found the following crash on:
>> >
>> > HEAD commit:    442b8cea2477 Add linux-next specific files for 20181109
>> > git tree:       linux-next
>> > console output: https://syzkaller.appspot.com/x/log.txt?x=11f1dc25400000
>> > kernel config:  https://syzkaller.appspot.com/x/.config?x=2f72bdb11df9fbe8
>> > dashboard link: https://syzkaller.appspot.com/bug?extid=6cffdef928852907751c
>> > compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
>> > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10126533400000
>> >
>> > IMPORTANT: if you fix the bug, please add the following tag to the commit:
>> > Reported-by: syzbot+6cffdef928852907751c@...kaller.appspotmail.com
>
> This should be addressed in current net-next, by commit:
>
> commit 9c48060141bd937497774546e4bb89b8992be383
> Author: Paolo Abeni <pabeni@...hat.com>
> Date:   Thu Nov 15 02:34:50 2018 +0100
>
>     udp: fix jump label misuse
>
> Cheers,
>
> Paolo


#syz fix: udp: fix jump label misuse