2011-02-14 10:57:08

by Tejun Heo

[permalink] [raw]
Subject: FUSE triggering BUG through blkdev_put()

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.

--
tejun


2011-02-14 14:55:46

by Miklos Szeredi

[permalink] [raw]
Subject: Re: FUSE triggering BUG through blkdev_put()

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

2011-02-23 09:23:39

by Florian Mickler

[permalink] [raw]
Subject: Re: FUSE triggering BUG through blkdev_put()

On Mon, 14 Feb 2011 15:55:40 +0100
Miklos Szeredi <[email protected]> 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