Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964798AbWE3Wtf (ORCPT ); Tue, 30 May 2006 18:49:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964800AbWE3Wte (ORCPT ); Tue, 30 May 2006 18:49:34 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:6078 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S964798AbWE3Wte (ORCPT ); Tue, 30 May 2006 18:49:34 -0400 Date: Wed, 31 May 2006 00:49:55 +0200 From: Ingo Molnar To: Andrew Morton Cc: Roland Dreier , linux-kernel@vger.kernel.org, Thomas Gleixner Subject: Re: 2.6.17-rc5-mm1 Message-ID: <20060530224955.GA5500@elte.hu> References: <20060530022925.8a67b613.akpm@osdl.org> <20060530154521.d737cc65.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060530154521.d737cc65.akpm@osdl.org> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -2.8 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.8 required=5.9 tests=ALL_TRUSTED,AWL autolearn=no SpamAssassin version=3.0.3 -2.8 ALL_TRUSTED Did not pass through any untrusted hosts 0.0 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1150 Lines: 29 * Andrew Morton wrote: > On Tue, 30 May 2006 14:24:03 -0700 > Roland Dreier wrote: > > > I'm seeing problems with MSI-X interrupts on 2.6.17-rc5-mm1. I'll try > > to debug the MSI patches in -mm further in the next day or so, but for > > now I'll post the symptoms. > > > > When I load the ib_mthca driver with MSI-X interrupts enabled, I get > > the following crash as soon as the first interrupt is generated. > > do_IRQ() did a jump-to-zero. So there's no handler installed. yep. No desc->irq_handler. That should be 'impossible' on x86_64, because the irq_desc[] array is initialized with handle_bad_irq, and from that point on x86_64 only uses set_irq_chip_and_handler(), which at most can set it to another (non-NULL) handle_irq function. Weird. does MSI much with the irq_desc[] separately perhaps, clearing handle_irq in the process perhaps? Ingo - 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/