On Fri, 27 Jul 2007, Oliver Neukum wrote:
> Am Donnerstag 26 Juli 2007 schrieb Greg KH:
> > Alan and Oliver, was this caused by the autosuspend changes for
> > usb-storage?
>
> The oops itself looks like refcounting. What caused the initial io error
> does not become clear from the log. It is possible that the device cannot
> stand suspension. But there's no evidence from that. On the contrary,
> these devices usually do an unplug/plug cycle, which is not in the log.
I don't think it's a refcounting problem. My guess is that the
underlying cause is the bug in your urb->status removal patch for
usb_start_wait_urb() -- the one I fixed here:
http://marc.info/?l=linux-usb-devel&m=118531582013355&w=2
Of course, my guess could be wrong. I haven't tried to recreate
Linus's bug with that patch reverted. But with the patch present I was
not able to duplicate the bug.
Alan Stern
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