Messages in this thread Patch in this message | | | Date | Wed, 20 Dec 2006 02:37:34 -0800 | From | Andrew Morton <> | Subject | Re: [Bug 7505] Linux-2.6.18 fails to boot on AMD64 machine |
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On Wed, 20 Dec 2006 04:59:19 -0500 Chuck Ebbert <76306.1226@compuserve.com> wrote:
> > On 12/19/06, Chuck Ebbert <76306.1226@compuserve.com> wrote: > > > So an external interrupt occurred, the system tried to use interrupt > > > descriptor #39 decimal (irq 7), but the descriptor was invalid. > > > > but the irq is disabled at that time. > > > > can you use attached diff to verify if the irq is enable somehow? > > But it seems interrupts are on--look at the flags: > > RSP: 0018:ffffffff803cdf68 EFLAGS: 00010246 >
down_write()->__down_write()->__down_write_nested()->spin_unlock_irq()->dead
Could someone please test this?
--- a/lib/rwsem-spinlock.c~a +++ a/lib/rwsem-spinlock.c @@ -195,13 +195,14 @@ void fastcall __sched __down_write_neste { struct rwsem_waiter waiter; struct task_struct *tsk; + unsigned long flags; - spin_lock_irq(&sem->wait_lock); + spin_lock_irqsave(&sem->wait_lock, flags); if (sem->activity == 0 && list_empty(&sem->wait_list)) { /* granted */ sem->activity = -1; - spin_unlock_irq(&sem->wait_lock); + spin_unlock_irqrestore(&sem->wait_lock, flags); goto out; } @@ -216,7 +217,7 @@ void fastcall __sched __down_write_neste list_add_tail(&waiter.list, &sem->wait_list); /* we don't need to touch the semaphore struct anymore */ - spin_unlock_irq(&sem->wait_lock); + spin_unlock_irqrestore(&sem->wait_lock, flags); /* wait to be given the lock */ for (;;) { _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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