Messages in this thread | | | Date | Mon, 17 Aug 2009 13:03:53 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: Threaded interrupt handlers broken? |
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On Mon, 17 Aug 2009, Thomas Gleixner wrote:
> 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 ?
Also just add printk("desc: %p \n", desc); to the various places to make sure that your pointers are correct.
Thanks,
tglx
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