linux-kernel - Re: hangs on boot in 9984d7394618df9

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Message-ID: <516341ED.5060803@wwwdotorg.org>
Date:	Mon, 08 Apr 2013 16:17:17 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Al Viro <viro@...IV.linux.org.uk>
CC:	Nathan Zimmer <nzimmer@....com>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	David Woodhouse <dwmw2@...radead.org>, stable@...r.kernel.org,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>
Subject: Re: hangs on boot in 9984d7394618df9

On 04/08/2013 03:48 PM, Al Viro wrote:
> On Mon, Apr 08, 2013 at 10:23:27PM +0100, Al Viro wrote:
>> On Mon, Apr 08, 2013 at 03:52:08PM -0500, Nathan Zimmer wrote:
>>
>>> Further digging seems to indicate 9984d7394618df9, the one right
>>> after the commit I previously identified.
>>> Not sure what I did wrong with my bisect to put it off by one.
>>
>> Ugh...  Can't reproduce here ;-/  Could you give more details on your
>> setup?
> 
> 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.
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