Messages in this thread | | | Date | Sat, 28 Jan 2006 12:19:48 +1100 | From | Anton Blanchard <> | Subject | Re: iommu_alloc failure and panic |
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Hi,
> It looks like they are already on: > > CONFIG_DEBUG_STACKOVERFLOW=y > CONFIG_DEBUG_STACK_USAGE=y
You could try bumping the limit for the warning in arch/powerpc/kernel/irq.c
if (unlikely(sp < (sizeof(struct thread_info) + 2048)))
Change it to 4096.
Unfortunately if the long call chain is in an interrupt disabled area you will not get warned.
> The machine is frozen after the panic.
You can do it sometime before the hang to see if you are getting close to overflowing the stack.
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