From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752874AbeARILC (ORCPT <rfc822;w@1wt.eu>);
        Thu, 18 Jan 2018 03:11:02 -0500
Received: from Galois.linutronix.de ([146.0.238.70]:48139 "EHLO
        Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1750948AbeARILB (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 18 Jan 2018 03:11:01 -0500
Date: Thu, 18 Jan 2018 09:10:43 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Keith Busch <keith.busch@intel.com>
cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [BUG 4.15-rc7] IRQ matrix management errors
In-Reply-To: <20180118023720.GE7562@localhost.localdomain>
Message-ID: <alpine.DEB.2.20.1801180909210.1847@nanos>
References: <20180116071145.GA5643@localhost.localdomain> <alpine.DEB.2.20.1801161131160.1823@nanos> <alpine.DEB.2.20.1801161217300.1823@nanos> <20180117022511.GD6259@localhost.localdomain> <alpine.DEB.2.20.1801170832460.2366@nanos> <20180117075500.GB7562@localhost.localdomain>
 <alpine.DEB.2.20.1801171020440.1777@nanos> <alpine.DEB.2.20.1801171030150.1777@nanos> <20180117142440.GC7562@localhost.localdomain> <alpine.DEB.2.20.1801171557330.1777@nanos> <20180118023720.GE7562@localhost.localdomain>
User-Agent: Alpine 2.20 (DEB 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
X-Linutronix-Spam-Score: -1.0
X-Linutronix-Spam-Level: -
X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required,  ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, 17 Jan 2018, Keith Busch wrote:
> On Wed, Jan 17, 2018 at 04:01:47PM +0100, Thomas Gleixner wrote:
> > Which device is allocating gazillions of non-managed interrupts?
> 
> I believe that would be the i40e. :)

So enterprise grade insanity was spot on.

Can you please provide the output of

# cat /sys/kernel/debug/irq/irqs/$ONE_I40_IRQ

Thanks,

	tglx