Date: Tue, 21 Jul 2015 23:15:01 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Stefan Priebe <s.priebe@profihost.ag>
cc: x86@kernel.org, JBeulich@suse.com, LKML <linux-kernel@vger.kernel.org>,
        Sasha Levin <sasha.levin@oracle.com>,
        Jiang Liu <jiang.liu@linux.intel.com>
Subject: Re: do_IRQ: 0.126 No irq handler for vector (irq -1)
In-Reply-To: <55AE8B72.9060905@profihost.ag>
Message-ID: <alpine.DEB.2.11.1507212310340.18576@nanos>
References: <55ACCBF2.1000509@profihost.ag> <alpine.DEB.2.11.1507201247280.18576@nanos> <55AE8B72.9060905@profihost.ag>
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On Tue, 21 Jul 2015, Stefan Priebe wrote:
> Am 20.07.2015 um 12:53 schrieb Thomas Gleixner:
> > On Mon, 20 Jul 2015, Stefan Priebe - Profihost AG wrote:
> > > Hello list,
> > > 
> > > i've 36 servers all running vanilla 3.18.18 kernel which have a very
> > > high disk and network load.
> > > 
> > > Since a few days i encounter regular the following error messages and
> > > pretty often completely hanging disk i/o:
> > > [535040.439859] do_IRQ: 0.126 No irq handler for vector (irq -1)
> > >
> > > All systems are Single E5 Xeons and I'm running irqbalance on them.
> > 
> > Does it stop if you disable irqbalance ?
> 
> No. The machines still crash.

crash as in running into a BUG? Or is it just that disk I/O is stalled?

Can you please provide the full dmesg output of such a machine?

I'll cook up a debug patch for that against 3.18.18.

Thanks,

	tglx
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