Re: Threaded interrupt handlers broken?

Thomas Gleixner
2009-08-17T10:56:59Z

On Mon, 17 Aug 2009, Michael Buesch wrote:
> Ok, I added some more debugging code:
> http://bu3sch.de/patches/wireless-testing/20090817-1219/patches/001-hack-threaded-irqs.patch
>
> Here's the result:
> http://bu3sch.de/misc/dmesg2
>
> Is it possible that the irq_to_desc() in irq_thread() fails and the
> resulting desc pointer points to something random? That could
> probably explain why the bit is set and why the spinlock is
> uninitialized. But it would not explain why desc->lock would still
> work... Maybe irq_to_desc() returns a descriptor to another irq (!=
> 52)?

That would cause the whole irq code to fail. Can you send/upload your
.config please ?

Thanks,

tglx