All of lore.kernel.org
 help / color / mirror / Atom feed
From: Greg KH <greg@kroah.com>
To: Jens Axboe <axboe@suse.de>
Cc: Maneesh Soni <maneesh@in.ibm.com>,
	"Christopher S. Aker" <caker@theshore.net>,
	linux-kernel@vger.kernel.org
Subject: Re: 2.6.10-rc2-bk7 - kernel BUG at fs/sysfs/file.c:87!
Date: Wed, 24 Nov 2004 13:32:31 -0800	[thread overview]
Message-ID: <20041124213231.GA3132@kroah.com> (raw)
In-Reply-To: <20041124211800.GQ13847@suse.de>

On Wed, Nov 24, 2004 at 10:18:00PM +0100, Jens Axboe wrote:
> On Wed, Nov 24 2004, Maneesh Soni wrote:
> > On Wed, Nov 24, 2004 at 07:26:43PM +0000, Christopher S. Aker wrote:
> > > Doing "cat /sys/block/sda/queue/iosched/show_status" produces the following BUG:
> > > 
> > > ------------[ cut here ]------------
> > > kernel BUG at fs/sysfs/file.c:87!
> > 
> > I think you are using cfq io scheduler. show_status is from cfq_ioched. Looks 
> > like return value freom cfq_status_show() is going beyond one page. 
> > read/write buffer for sysfs text attribute files is limited to one page. 
> 
> Yeah, with many processes that is easy to hit. I dunno how to fix it
> yet, is it possible to combine sysfs with the seq stuff? The file should
> just be deleted, though.

sysfs files should have only 1 value per file.  You really have a single
value that is bigger than a page size?  :)

thanks,

greg k-h

  reply	other threads:[~2004-11-24 21:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-24 19:24 2.6.10-rc2-bk7 - kernel BUG at fs/sysfs/file.c:87! Christopher S. Aker
2004-11-24 20:41 ` Maneesh Soni
2004-11-24 21:18   ` Jens Axboe
2004-11-24 21:32     ` Greg KH [this message]
2004-11-25  6:58       ` Jens Axboe

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20041124213231.GA3132@kroah.com \
    --to=greg@kroah.com \
    --cc=axboe@suse.de \
    --cc=caker@theshore.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=maneesh@in.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.