linux-kernel - Re: [linux-usb-devel] [2.6.22-rc7] khubd NULL deref oops...

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Message-ID: <Pine.LNX.4.44L0.0707111734540.2718-100000@iolanthe.rowland.org>
Date:	Wed, 11 Jul 2007 17:41:13 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Daniel J Blueman <daniel.blueman@...il.com>
cc:	Chuck Ebbert <cebbert@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: [linux-usb-devel] [2.6.22-rc7] khubd NULL deref oops...

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.

In fact, it looks like the bug is connected with 
CONFIG_SYSFS_DEPRECATED.  You can try to see what happens with that 
switch disabled.

Alan Stern

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