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    SubjectRe: Threaded interrupt handlers broken?
    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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