On Sat, 4 Mar 2006, Andrew Morton wrote:
> Alan Stern <[EMAIL PROTECTED]> wrote:
> >
> > On Fri, 3 Mar 2006, Andrew Morton wrote:
> >
> > > The kernel is 2.6.16-rc5-mm2 plus a little bit. I've got `reboot -f' in
> > > rc.local (don't ask) and after maybe 200 reboots I hit a USB oops.
> > ...
> > > The faulting line is here:
> > >
> > > if (i == 0 && desc->bInterfaceClass == USB_CLASS_COMM
> >
> > I suppose it's beyond the realm of folly to ask if any of these problems
> > are at all reproducible?
> >
>
> I seem to be able to get it to oops about once per two hours in an infinite
> reboot cycle. There's no clean pattern to it. Mainline kenrel survived
> eight hours so it's probably something in -mm.
>
> Bisecting 1400 patches at two hours each sounds fun.
No, it doesn't. :-(
How about if, instead of rebooting over and over, you run a shell script
like this:
#!/bin/sh
umount /proc/bus/usb
while : ; do
rmmod uhci-hcd
rmmod ohci-hcd
rmmod ehci-hcd
... any other USB modules you might have loaded
rmmod usbcore
sleep 1
modprobe usbcore
modprobe ehci-hcd
modprobe ohci-hcd
modprobe uhci-hcd
sleep 2
done
Maybe it will provoke the fault a lot quicker.
Or maybe the fault won't happen at all, which would be a reasonably good
indication (although not a perfect one) that the error isn't in the USB
code.
Alan Stern
-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
_______________________________________________
linux-usb-devel@lists.sourceforge.net
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
