linux-kernel - Re: WARNING: CPU: 1

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Date:   Sun, 27 Sep 2020 10:47:39 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+3640e696903873858f7e@...kaller.appspotmail.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Johannes Berg <johannes@...solutions.net>,
        linux-wireless <linux-wireless@...r.kernel.org>
Subject: Re: WARNING: CPU: 1

On Sun, Sep 27, 2020 at 10:38 AM syzbot
<syzbot+3640e696903873858f7e@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:    748d1c8a Merge branch 'devlink-Use-nla_policy-to-validate-..
> git tree:       net-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=13ac3ec3900000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=51fb40e67d1e3dec
> dashboard link: https://syzkaller.appspot.com/bug?extid=3640e696903873858f7e
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1599be03900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=149fd44b900000

Based on the reproducer, this looks like some wireless bug.
+net/wireless maintainers.

> Bisection is inconclusive: the issue happens on the oldest tested release.
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1474aaad900000
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=1674aaad900000
> console output: https://syzkaller.appspot.com/x/log.txt?x=1274aaad900000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+3640e696903873858f7e@...kaller.appspotmail.com
>
> ------------[ cut here ]------------
> WARNING: CPU: 1
>
>
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@...glegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
> syzbot can test patches for this issue, for details see:
> https://goo.gl/tpsmEJ#testing-patches
>
> --
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