netdev - Re: [BUG] BPF splat on latest kernels

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CANn89i+rE2_0y79iK_X+mA9UBY4t+omraVpBDFRC6DsFP06uqA@mail.gmail.com>
Date:   Fri, 22 Mar 2019 05:52:32 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...com>,
        Networking <netdev@...r.kernel.org>
Subject: Re: [BUG] BPF splat on latest kernels

On Thu, Mar 21, 2019 at 8:36 PM Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
>
> On Wed, Mar 20, 2019 at 09:49:34PM -0700, Eric Dumazet wrote:
> >
> >
> > On 03/08/2019 04:29 PM, Alexei Starovoitov wrote:
> > > On Fri, Mar 8, 2019 at 12:33 PM Eric Dumazet <eric.dumazet@...il.com> wrote:
> > >>
> > >> Running test_progs on a LOCKDEP enabled kernel (latest David Miller net tree)
> > >>
> > >> I got the following splat.
> > >>
> > >> It is not immediately obvious to me. Any idea ?
> > >
> > > I think I saw something similar running test_maps,
> > > but I had other changes in the tree. And later I was
> > > never able to reproduce it, so figured it must have
> > > been my local change. Looks like it was for real.
> > > Do you have a reproducer?
> > > I'll take a look on monday.
> >
> > Hi Alexei
> >
> > Has this problem been root caused ?
>
> This is not forgotten.
> I'm prioritizing bpf code reviews at the moment since backlog is still big
> and developers are waiting.
> If somebody can dig into this lockdep splat it would be great.

Maybe I could resend the splat to lkml@ to get some help.

Thanks !