From: Cornelia Huck <cornelia.huck@de.ibm.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Daniel J Blueman <daniel.blueman@gmail.com>,
Chuck Ebbert <cebbert@redhat.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
USB development list <linux-usb-devel@lists.sourceforge.net>
Subject: Re: [linux-usb-devel] [2.6.22-rc7] khubd NULL deref oops...
Date: Thu, 12 Jul 2007 09:30:27 +0200 [thread overview]
Message-ID: <20070712093027.6258d80d@gondolin.boeblingen.de.ibm.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0707111734540.2718-100000@iolanthe.rowland.org>
On Wed, 11 Jul 2007 17:41:13 -0400 (EDT),
Alan Stern <stern@rowland.harvard.edu> wrote:
> On Wed, 11 Jul 2007, Daniel J Blueman wrote:
>
> > > Try disabling CONFIG_USB_SUSPEND. It makes lots of USB bugs go away
> >
> > I'll give it a shot. For the record, I wasn't trying to perform a
> > suspend at this time (or since booting).
>
> I doubt that USB suspend has any connection with this problem. It's
> clear that the problem occurs in the driver core when the SCSI core
> tries to unregister a device. It's not directly related to USB at all.
Hm, it seems that the class device's kobject is not set up correctly
(at least, not its name) when make_class_name() is called. Might be
that it is unregistered before it has been added completely (at least,
before kobject_set_name() has been called).
>
> In fact, it looks like the bug is connected with
> CONFIG_SYSFS_DEPRECATED. You can try to see what happens with that
> switch disabled.
Turning on verbose driver core messages (CONFIG_DEBUG_DRIVER) while
leaving on CONFIG_SYSFS_DEPRECATED may also be worthwile.
next prev parent reply other threads:[~2007-07-12 7:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-08 21:45 [2.6.22-rc7] khubd NULL deref oops Daniel J Blueman
2007-07-08 21:49 ` Michal Piotrowski
2007-07-08 22:07 ` Daniel J Blueman
2007-07-09 15:03 ` [linux-usb-devel] " Alan Stern
2007-07-09 9:55 ` Jiri Kosina
2007-07-11 17:04 ` Chuck Ebbert
2007-07-11 18:51 ` Daniel J Blueman
2007-07-11 21:41 ` [linux-usb-devel] " Alan Stern
2007-07-12 7:30 ` Cornelia Huck [this message]
2007-07-12 18:43 ` Alan Stern
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