Re: [linux-usb-devel] Re: Fw: Re: oops in choose_configuration()

From: Andrew Morton
Date: Wed Mar 08 2006 - 15:53:50 EST


Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>
> What about those scheduler changes you found through the bisection search?
> Any word on that?

Ingo's gone over them pretty closely. The current theory is that the CPU
scheduler change alters timing sufficiently for the bug to bite.

The machine passes memtest86.

Ingo's suspecting stack corruption. Do you know whether USB anywhere does
DMA into automatically-allocated storage (ie: kernel stacks)?

Am about to reboot into a stack-corruption-detector patch from Ingo.

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