Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753809Ab3DUQ5C (ORCPT ); Sun, 21 Apr 2013 12:57:02 -0400 Received: from mail.skyhub.de ([78.46.96.112]:44424 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751709Ab3DUQ5A (ORCPT ); Sun, 21 Apr 2013 12:57:00 -0400 Date: Sun, 21 Apr 2013 18:56:54 +0200 From: Borislav Petkov To: "Paul E. McKenney" Cc: x86-ml , lkml , tiwai@suse.de Subject: Re: irq 16: nobody cared Message-ID: <20130421165653.GA4623@pd.tnic> References: <20130420185330.GA4654@pd.tnic> <20130420235206.GA3509@linux.vnet.ibm.com> <20130421103403.GA4594@pd.tnic> <20130421163002.GB3509@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20130421163002.GB3509@linux.vnet.ibm.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1805 Lines: 48 On Sun, Apr 21, 2013 at 09:30:02AM -0700, Paul E. McKenney wrote: > Thank you for the info! Now to figure out what the heck is causing this. > > I am also guessing that your system does have hardware that could do an > irq 16. Of course, if removing or disabing this hardware is an option, > it would be interesting to see what happens. Onboard sound chip so only BIOS disable should help, if present. Let me check. Oh, I can take out the laser and cut it out of the silicon. :-) What about not enabling any sound support and thus not using this IRQ handler? Would that tell us something? > Especially given that at the very bottom of the .jpg, there is a > chopped-off line that appears to read "Disabling IRQ #16". Which of > course leads me to wonder whether we hit a race between the last > interrupt arriving and the device being disabled. Well, the "Disabling IRQ..." line comes from note_interrupt() down the do_IRQ() path. It looks like if (unlikely(desc->irqs_unhandled > 99900)) { we hit some high number of unhandled interrupts, issue the message about the bad IRQ and then disable it by dumping the handlers beforehand. > Hmmm... Do you have either CONFIG_PM_SLEEP, SUPPORT_VGA_SWITCHEROO, > or CONFIG_PM_RUNTIME set for these runs? CONFIG_PM_SLEEP=y # CONFIG_VGA_SWITCHEROO is not set # CONFIG_PM_RUNTIME is not set You meant CONFIG_VGA_SWITCHEROO and not SUPPORT_VGA_SWITCHEROO, right? Ok, let me try to disable the soundcard in the BIOS. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/