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Date: Mon, 8 Apr 2013 15:45:31 -0700
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Subject: Re: hangs on boot in 9984d7394618df9
From: Doug Anderson <dianders@chromium.org>
To: Stephen Warren <swarren@wwwdotorg.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>, Nathan Zimmer <nzimmer@sgi.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        linux-fsdevel@vger.kernel.org,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        David Woodhouse <dwmw2@infradead.org>, stable@vger.kernel.org,
        "linux-next@vger.kernel.org" <linux-next@vger.kernel.org>
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Hi,

On Mon, Apr 8, 2013 at 3:17 PM, Stephen Warren <swarren@wwwdotorg.org> wrote:
>> Anyway, I've just pushed a splitup of that commit (carved in 3 pieces)
>> into vfs.git#pipe-splitup; could you check which part triggers that
>> hang?  Should propagate in a few...
>
> It looks like "pipe: unify ->release() and ->open()" introduces the
> problem. Note that I had to add a prototype for fifo_open() before the
> structs that reference it for that commit to compile.

It sounds like Stephen has provided you the info you needed so not
doing any extra testing now, but I figured I'd chime in that I hit
problems this morning with linux-next and it appears to be the same
thing.  I did a revert of 9984d7394618df9 and (plus a revert of a
handful of patches to the same file) and problems are resolved.  The
failure case is really weird in that everything works well booting to
a simple /bin/bash but fails when you do more complex tasks.

Anyway: If you need some extra testing feel free to CC me.

-Doug