From: Jens Axboe <axboe@suse.de>
To: Maneesh Soni <maneesh@in.ibm.com>
Cc: "Christopher S. Aker" <caker@theshore.net>,
linux-kernel@vger.kernel.org, Greg KH <greg@kroah.com>
Subject: Re: 2.6.10-rc2-bk7 - kernel BUG at fs/sysfs/file.c:87!
Date: Wed, 24 Nov 2004 22:18:00 +0100 [thread overview]
Message-ID: <20041124211800.GQ13847@suse.de> (raw)
In-Reply-To: <20041124204138.GA2543@in.ibm.com>
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.
--
Jens Axboe
next prev parent reply other threads:[~2004-11-24 23:36 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 [this message]
2004-11-24 21:32 ` Greg KH
2004-11-25 6:58 ` Jens Axboe
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