linux-kernel - Re: Flooded by do_IRQ: 0.91 No irq handler for vector

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Message-ID: <d12c1890908111528p47cdd30bw24749e34fc1cc8d3@mail.gmail.com>
Date:	Tue, 11 Aug 2009 19:28:52 -0300
From:	Luis Fernando Planella Gonzalez <lfpg.dev@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: Flooded by do_IRQ: 0.91 No irq handler for vector

I'm really concerned that all those interrupts might slow down the
computer somehow...
Here is an attached syslog part after a reboot.
Sometimes, the ratelimit says that thousands of callbacks were suppressed.
Is there a way to make this message be displayed only once?

In arch/x86/kernel/irq.c, the line 213 is:
irq = __get_cpu_var(vector_irq)[vector];

In my case, the returned irq is -1. Doesn't it makes sense to not log
the "No irq handler for vector" message when irq < 0?

Or even a deeper answer: Why, in my case, the resulting irq is -1?

2009/8/10 Luis Fernando Planella Gonzalez <lfpg.dev@...il.com>:
> I've just compiled 2.6.30.4, and it shows another info:
> do_IRQ: 0.91 No irq handler for vector (irq -1)
>
> Attached are the /proc/interrupts and the lspci -vv
>
> Anyway, sorry for not specifying my hardware:
> * Intel Core2 Duo 2.13 GHz
> * 2GB RAM
> * NVidia 7900 GS
>
> Thanks.
>

View attachment "syslog.txt" of type "text/plain" (429674 bytes)