Re: [-rt BUG] scheduling with irqs disabled: swapper
From: Steven Rostedt
Date: Sat May 27 2006 - 21:43:22 EST
On Sat, 2006-05-27 at 17:13 -0700, john stultz wrote:
> On Fri, 2006-05-26 at 21:14 -0400, Steven Rostedt wrote:
> > On Fri, 2006-05-26 at 15:53 -0700, john stultz wrote:
> > > Hey Ingo, All,
> > > We had the following bug reported on bootup on one of our boxes (it
> > > was a 4way I believe) running -rt22. So far it seems to be a one-off
> > > but I figured I'd post it to see if anyone had a clue.
> >
> > I'm assuming this is a i386. Also I'm assuming that frame pointers was
> > not compiled in since the stack is a little suspicious.
> >
> > Anyway, could you show the /proc/interrupts of this machine. I'm
> > curious if the i8042 isn't sharing an interrupt with something with
> > NODELAY in it.
>
> Here ya go:
> CPU0 CPU1 CPU2 CPU3
> 0: 8796 3868607 275 531673 IO-APIC-edge [........N/ 0] pit
> 2: 0 0 0 0 XT-PIC [........N/ 0] cascade
> 3: 5 620 2 229 IO-APIC-edge [........./ 63] serial
> 8: 0 1 0 0 IO-APIC-edge [........./ 0] rtc
> 11: 0 0 0 0 IO-APIC-edge [........./ 0] acpi
> 19: 120 0 0 1 IO-APIC-level [........./ 0] ohci_hcd:usb1, ohci_hcd:usb2
> 24: 57 9 5 46795 IO-APIC-level [........./ 0] eth0
> 26: 1396 14537 0 702 IO-APIC-level [........./ 0] ioc0
> NMI: 0 0 0 0
> LOC: 6907796 4419008 4415669 4413513
> ERR: 0
> MIS: 0
Thanks, but I was looking more into the code, and I'm wondering...
Does this machine have "irqfixup" or "irqpoll" set in the kernel command
line?
I think that -rt doesn't support it yet. That is, it can call a handler
from interrupt context, which should have been a thread.
Let me know if that was the case.
-- Steve
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