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

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Date:	Wed, 11 Jul 2007 19:51:55 +0100
From:	"Daniel J Blueman" <daniel.blueman@...il.com>
To:	"Chuck Ebbert" <cebbert@...hat.com>
Cc:	"Linux Kernel" <linux-kernel@...r.kernel.org>,
	"USB development list" <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: [2.6.22-rc7] khubd NULL deref oops...

On 11/07/07, Chuck Ebbert <cebbert@...hat.com> wrote:
> On 07/08/2007 05:45 PM, Daniel J Blueman wrote:
> > When plugging in a USB 2 mass-storage device which I've been seeing
> > problems with, I caught a khubd oops [1]. Kernel is 2.6.22-rc7 on ia32
> > built with Ubuntu's 2.6.22 .config.
>
> > [ 4769.252000] sd 6:0:0:0: [sdb] Assuming drive cache: write through
> > [ 4769.252000]  sdb: sdb1 < sdb5 sdb6<6>usb 5-3: reset high speed USB
> > device using ehci_hcd and address 8
>
> So the device got reset right in the middle of scanning for partitions.
>
> > [ 4769.544000] usb 5-3: device descriptor read/64, error -71
> > [ 4769.760000] usb 5-3: device descriptor read/64, error -71
> > [ 4769.976000] usb 5-3: reset high speed USB device using ehci_hcd and
> > address 8
> > [ 4770.088000] usb 5-3: device descriptor read/64, error -71
> > [ 4770.304000] usb 5-3: device descriptor read/64, error -71
> > [ 4770.520000] usb 5-3: reset high speed USB device using ehci_hcd and
> > address 8
> > [ 4770.928000] usb 5-3: device not accepting address 8, error -71
> > [ 4771.040000] usb 5-3: reset high speed USB device using ehci_hcd and
> > address 8
>
> Then a whole slew of these by-now-familiar messages.
>
> 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).

Thanks for your help,
  Daniel
-- 
Daniel J Blueman
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