From: Ido Schimmel <idosch@mellanox.com>
To: syzbot <syzbot+987e48d84abddbe2506d@syzkaller.appspotmail.com>,
"dvyukov@google.com" <dvyukov@google.com>
Cc: "ast@kernel.org" <ast@kernel.org>,
"daniel@iogearbox.net" <daniel@iogearbox.net>,
"davem@davemloft.net" <davem@davemloft.net>,
Jiri Pirko <jiri@mellanox.com>,
"kuznet@ms2.inr.ac.ru" <kuznet@ms2.inr.ac.ru>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"syzkaller-bugs@googlegroups.com"
<syzkaller-bugs@googlegroups.com>,
"yoshfuji@linux-ipv6.org" <yoshfuji@linux-ipv6.org>
Subject: Re: WARNING in bpf_prog_kallsyms_add
Date: Mon, 25 Mar 2019 12:16:38 +0000 [thread overview]
Message-ID: <20190325121635.GA10590@splinter> (raw)
In-Reply-To: <000000000000557b4c0584cdabed@google.com>
+ Dmitry
On Sat, Mar 23, 2019 at 07:16:01PM -0700, syzbot wrote:
> syzbot has bisected this bug to:
>
> commit 7607dd35fc34893214284cca740d015154d20452
> Author: Ido Schimmel <idosch@mellanox.com>
> Date: Mon Jul 17 12:15:30 2017 +0000
>
> mlxsw: spectrum: Trap IPv4 packets with Router Alert option
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14e0ac07200000
> start commit: 645ff1e8 Merge branch 'for-linus' of git://git.kernel.org/..
> git tree: upstream
> final crash: https://syzkaller.appspot.com/x/report.txt?x=16e0ac07200000
> console output: https://syzkaller.appspot.com/x/log.txt?x=12e0ac07200000
> kernel config: https://syzkaller.appspot.com/x/.config?x=20271e14bc1c87f0
> dashboard link: https://syzkaller.appspot.com/bug?extid=987e48d84abddbe2506d
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c69d20c00000
>
> Reported-by: syzbot+987e48d84abddbe2506d@syzkaller.appspotmail.com
> Fixes: 7607dd35fc34 ("mlxsw: spectrum: Trap IPv4 packets with Router Alert
> option")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
Dmitry,
The bisection is probably wrong. Above mentioned commit is specific to
mlxsw which is not even present in the provided kernel config.
I see that this also appears in the web interface [1] which might be
misleading to some people. Might be worthwhile to add a command for
syzbot that tells it that bisection is wrong?
[1] https://syzkaller.appspot.com/bug?id=b658eb696c8279d9951a4ceea79efba8a1d12467
next prev parent reply other threads:[~2019-03-25 12:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-04 15:41 WARNING in bpf_prog_kallsyms_add syzbot
2019-03-24 2:16 ` syzbot
2019-03-25 12:16 ` Ido Schimmel [this message]
2019-03-26 8:27 ` Dmitry Vyukov
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