linux-kernel - Re: `do_IRQ: 1.55 No irq handler for vector` on ASRock E350M1

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Date:   Sat, 24 Feb 2018 09:59:11 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Paul Menzel <pmenzel@...gen.mpg.de>
cc:     Borislav Petkov <bp@...en8.de>,
        Paul Menzel <pmenzel+linux-irq@...gen.mpg.de>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: `do_IRQ: 1.55 No irq handler for vector` on ASRock E350M1

On Sat, 24 Feb 2018, Paul Menzel wrote:
> Am 23.02.2018 um 20:09 schrieb Borislav Petkov:
> > On Fri, Feb 23, 2018 at 07:18:34PM +0100, Thomas Gleixner wrote:
> > > Borislav is seeing similar issues on larger AMD machines. The interrupt
> > > seems to come from BIOS/microcode during bringup of secondary CPUs and we
> > > have no idea why.
> > 
> > Paul, can you boot 4.14 and grep your dmesg for something like:
> > 
> > [    0.000000] spurious 8259A interrupt: IRQ7. >
> > ?
> 
> No, I do not see that. Please find the logs attached.

>From your 4.14 log:

Feb 19 09:48:06.843173 kodi kernel: CPU 0 irqstacks, hard=e9b0a000 soft=e9b0c000
Feb 19 09:48:06.843216 kodi kernel: spurious 8259A interrupt: IRQ7.
Feb 19 09:48:06.843258 kodi kernel: Console: colour VGA+ 80x25

So this has been there in 4.14 already just the detection mechanism has
changed due to the modifications of the interrupt vector management code.
It's not a real issue, just annoying ....

Thanks,

	tglx