netdev - Re: KASAN: slab-out-of-bounds Read in br_mrp

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Message-ID: <CACT4Y+bzz-h5vNGH0rDMUiuGZVX01oXawXAPbjtnNHb1KVWSvg@mail.gmail.com>
Date:   Thu, 21 May 2020 16:28:05 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     syzbot <syzbot+9c6f0f1f8e32223df9a4@...kaller.appspotmail.com>,
        bridge@...ts.linux-foundation.org,
        David Miller <davem@...emloft.net>,
        horatiu.vultur@...rochip.com, kuba@...nel.org,
        LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        Roopa Prabhu <roopa@...ulusnetworks.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: KASAN: slab-out-of-bounds Read in br_mrp_parse

On Thu, May 21, 2020 at 4:08 PM Dan Carpenter <dan.carpenter@...cle.com> wrote:
>
> On Wed, May 20, 2020 at 11:23:18AM -0700, syzbot wrote:
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:    dda18a5c selftests/bpf: Convert bpf_iter_test_kern{3, 4}.c..
> > git tree:       bpf-next
>                   ^^^^^^^^
>
> I can figure out what this is from reading Next/Trees but it would be
> more useful if it were easier to script.

Hi Dan,

Is there a canonical way to refer to a particular branch of a particular tree?
>From what I observed on mailing lists people seem to say "linux-next"
or "upstream tree" and that seems to mean specific things that
everybody understands.

What do you want to script? Note syzbot is not promising a specific
stable API wrt these plain text emails. These are flattened into text
format for human consumption and sent over unreliable media.

> > console output: https://syzkaller.appspot.com/x/log.txt?x=10c4e63c100000
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=668983fd3dd1087e
> > dashboard link: https://syzkaller.appspot.com/bug?extid=9c6f0f1f8e32223df9a4
> > compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17eaba3c100000
> > C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=128598f6100000
> >
>
> regards,
> dan carpenter
>
>
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