Re: fs, net: deadlock between bind/splice on af_unix

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To: kodamagulla.kalyan@xxxxxxxxx
Subject: Re: fs, net: deadlock between bind/splice on af_unix
From: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Date: Fri, 23 Jun 2017 09:30:57 -0700
Cc: syzkaller <syzkaller@xxxxxxxxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>, David Miller <davem@xxxxxxxxxxxxx>, Rainer Weikusat <rweikusat@xxxxxxxxxxxxxxxxxxxxxxx>, Hannes Frederic Sowa <hannes@xxxxxxxxxxxxxxxxxxx>, Linux Kernel Network Developers <netdev@xxxxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>
In-reply-to: <065031f0-27c5-443d-82f9-2f475fcef8c3@googlegroups.com>

Hi,

On Thu, Jun 22, 2017 at 10:49 AM,  <kodamagulla.kalyan@xxxxxxxxx> wrote:
> I was getting below crash while running mp4.

Are you sure your 3.14 kernel has my patch in this thread?
commit 0fb44559ffd67de8517098 is merged in 4.10.

Also, your crash is on unix_dgram_sendmsg() path, not
unix_bind().

References:
- fs, net: deadlock between bind/splice on af_unix
  - From: Dmitry Vyukov

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