Re: serious 2.6 bug in USB subsystem?

[Greg KH <greg@kroah.com>]

On Mon, Oct 27, 2003 at 02:35:09PM -0800, David Mosberger wrote:
> One-line summary: plug-in your USB keyboard, see your machine die.

Any chance to know where the machine dies?  Any oops you can help us out
with?

> So, I have this non-name USB keyboard (with built-in 2-port USB hub)
> which reliably crashes 2.6.0-test{8,9} on both x86 and ia64.  In
> retrospect, it's clear to me that the same keyboard also occasionally
> crashes 2.4 kernels, but there the problem appears more seldom.
> Perhaps once in 10 reboots and once the machine is booted and the
> keyboard is running, it keeps on working.  The keyboard in question is
> a BTC 5141H.

If you do not load the HID driver, and disable automatic loading of the
hid driver (echo '/sbin/true' > /proc/sys/kernel/hotplug) and plug in
the device, does it still crash?

If not, can you get us the output of /proc/bus/usb/devices and lsusb
with the device plugged in?

If not, does then loading the hid driver cause the problem?

thanks,

greg k-h