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SubjectRe: Realtime Preemption, 2.6.12, Beginners Guide?

* Alistair John Strachan <s0348365@sms.ed.ac.uk> wrote:

> Okay, I'll send you the vmlinux from -18 with a new digital photo, and
> config, with CONFIG_4KSTACKS enabled.

this crash too seems to indicate trigger_softirqs()/wakeup_softirqd().
Somewhere we somehow corrupt the stack and e.g. in oops7.jpg we return
to 00c011ed. Note that it's a right-shifted address that could be one of
these:

c011ed50 t wakeup_softirqd
c011ed80 t trigger_softirqs

but it looks pretty weird. DEBUG_STACK_POISON (and the full-debug
.config i sent) could perhaps uncover other types of stack corruptions.

Ingo
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