linux-kernel - Re: FUSE triggering BUG through blkdev

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Message-ID: <20110223102314.129aac51@schatten.dmk.lab>
Date:	Wed, 23 Feb 2011 10:23:14 +0100
From:	Florian Mickler <florian@...kler.org>
To:	Miklos Szeredi <mszeredi@...e.cz>
Cc:	Tejun Heo <tj@...nel.org>, viro@...iv.linux.org.uk,
	linux-kernel@...r.kernel.org, kovariadam@...il.com
Subject: Re: FUSE triggering BUG through blkdev_put()

On Mon, 14 Feb 2011 15:55:40 +0100
Miklos Szeredi <mszeredi@...e.cz> wrote:

> On Mon, 2011-02-14 at 11:56 +0100, Tejun Heo wrote:
> > Please take a look at the following bug.
> > 
> >  https://bugzilla.kernel.org/show_bug.cgi?id=28642
> > 
> > The bug title and description are completely misleading but the
> > problem seems to have been caused by the recent eviction related
> > changes.  FUSE ends up blkdev_put'ting while I_CLEAR is still set on
> > the blkdev's inode triggering BUG_ON() in iput().
> 
> Thanks for forwarding.
> 
> It doesn't look to me that it's related to changes in fuse inode
> eviction.  More likely something from the recent inode locking changes.
> 
> Thanks,
> Miklos
> 

The Fuse Bug has nothing to do with the invisible battery of bug
28642. To avoid confusion, the fuse bug is tracked here:
https://bugzilla.kernel.org/show_bug.cgi?id=29202

Regards,
Flo
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