netdev - Re: BUG: spinlock recursion in release

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Message-ID: <5d39bd8c17d6e_3ccf2b1636f025b8c4@john-XPS-13-9370.notmuch>
Date:   Thu, 25 Jul 2019 07:32:44 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     syzbot <syzbot+e67cf584b5e6b35a8ffa@...kaller.appspotmail.com>,
        arvid.brodin@...en.se, aviadye@...lanox.com, borisp@...lanox.com,
        daniel@...earbox.net, davejwatson@...com, davem@...emloft.net,
        jakub.kicinski@...ronome.com, john.fastabend@...il.com,
        john.hurley@...ronome.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, simon.horman@...ronome.com,
        syzkaller-bugs@...glegroups.com, willemb@...gle.com,
        xiyou.wangcong@...il.com
Subject: Re: BUG: spinlock recursion in release_sock

syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit 8822e270d697010e6a4fd42a319dbefc33db91e1
> Author: John Hurley <john.hurley@...ronome.com>
> Date:   Sun Jul 7 14:01:54 2019 +0000
> 
>      net: core: move push MPLS functionality from OvS to core helper
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13ca5a5c600000
> start commit:   9e6dfe80 Add linux-next specific files for 20190724
> git tree:       linux-next
> final crash:    https://syzkaller.appspot.com/x/report.txt?x=102a5a5c600000
> console output: https://syzkaller.appspot.com/x/log.txt?x=17ca5a5c600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=6cbb8fc2cf2842d7
> dashboard link: https://syzkaller.appspot.com/bug?extid=e67cf584b5e6b35a8ffa
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13680594600000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15b34144600000
> 
> Reported-by: syzbot+e67cf584b5e6b35a8ffa@...kaller.appspotmail.com
> Fixes: 8822e270d697 ("net: core: move push MPLS functionality from OvS to  
> core helper")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

This commit is wrong, it appears to be introduced by some other fixes we
pushed last couple days for tls/bpf. I'll look into it. Thanks.