From: Jussi Maki <joamaki@gmail.com>
To: Paolo Abeni <pabeni@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>,
syzbot <syzbot+62e474dd92a35e3060d8@syzkaller.appspotmail.com>,
Andrii Nakryiko <andrii@kernel.org>,
ast@kernel.org, bpf <bpf@vger.kernel.org>,
davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com,
kafai@fb.com, kpsingh@kernel.org, kuba@kernel.org,
linux-kernel@vger.kernel.org,
Network Development <netdev@vger.kernel.org>,
songliubraving@fb.com, syzkaller-bugs@googlegroups.com,
yhs@fb.com, toke@toke.dk
Subject: Re: [syzbot] BUG: corrupted list in netif_napi_add
Date: Tue, 19 Oct 2021 12:11:28 +0200 [thread overview]
Message-ID: <CAHn8xcnoPvt4KNZ3cD17PD9qbTa=58h38E8O0zePvYiKHFEc+A@mail.gmail.com> (raw)
In-Reply-To: <f3cc125b2865cce2ea4354b3c93f45c86193545a.camel@redhat.com>
On Thu, Oct 14, 2021 at 3:50 PM Paolo Abeni <pabeni@redhat.com> wrote:
>
> On Wed, 2021-10-13 at 15:35 +0200, Daniel Borkmann wrote:
> > On 10/13/21 1:40 PM, syzbot wrote:
> > > Hello,
> > >
> > > syzbot found the following issue on:
> >
> > [ +Paolo/Toke wrt veth/XDP, +Jussi wrt bond/XDP, please take a look, thanks! ]
>
> For the records: Toke and me are actively investigating this issue and
> the other recent related one. So far we could not find anything
> relevant.
>
> The onluy note is that the reproducer is not extremelly reliable - I
> could not reproduce locally, and multiple syzbot runs on the same code
> give different results. Anyhow, so far the issue was only observerable
> on a specific 'next' commit which is currently "not reachable" from any
> branch. I'm wondering if the issue was caused by some incosistent
> status of such tree.
>
Hey,
I took a look at the bond/XDP related bits and couldn't find anything
obvious there. And for what it's worth, I was running the syzbot repro
under bpf-next tree (223f903e9c8) in the bpf vmtest.sh environment for
30 minutes without hitting this. An inconsistent tree might be a
plausible cause.
next prev parent reply other threads:[~2021-10-19 10:11 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-13 11:40 [syzbot] BUG: corrupted list in netif_napi_add syzbot
2021-10-13 13:35 ` Daniel Borkmann
2021-10-14 13:50 ` Paolo Abeni
2021-10-18 14:04 ` Vlad Buslov
2021-10-18 15:42 ` Jakub Kicinski
2021-10-18 16:12 ` Vlad Buslov
2021-10-18 23:31 ` Saeed Mahameed
2021-10-18 17:40 ` Toke Høiland-Jørgensen
2021-10-18 17:58 ` Jakub Kicinski
2021-10-19 10:11 ` Jussi Maki [this message]
2021-10-13 14:41 ` Paolo Abeni
2021-12-14 7:52 ` syzbot
2021-12-14 17:56 ` Dmitry Vyukov
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