Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753690Ab0LCRyL (ORCPT ); Fri, 3 Dec 2010 12:54:11 -0500 Received: from mx1.redhat.com ([209.132.183.28]:26427 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751550Ab0LCRyJ (ORCPT ); Fri, 3 Dec 2010 12:54:09 -0500 Date: Fri, 3 Dec 2010 12:54:01 -0500 From: Neil Horman To: Stanislaw Gruszka Cc: Maxim Uvarov , kexec@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: kdump broken on 2.6.37-rc4 Message-ID: <20101203175401.GE28603@hmsreliant.think-freely.org> References: <20101203111623.GA2741@redhat.com> <20101203171147.GA2299@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101203171147.GA2299@redhat.com> User-Agent: Mutt/1.5.20 (2009-08-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1499 Lines: 37 On Fri, Dec 03, 2010 at 06:11:48PM +0100, Stanislaw Gruszka wrote: > On Fri, Dec 03, 2010 at 06:46:09PM +0300, Maxim Uvarov wrote: > > 2010/12/3 Stanislaw Gruszka : > > > On my T-60 laptop, i686 system with 2.6.37-rc4 kernel, > > > "echo c > /proc/sysrq-trigger" just hung the system. Kdump > > > works on 2.6.36. Is this known issue? If not, what info > > > I should provide to solve it (I think the easiest way > > > to solve the problem would be bisect) ? > > > > > > Stanislaw > > > > > > > I tested x86 QEMU yesterday with the latest git. It worked. > > Might be something target specific.., What does console print? > > Here is the photo > http://people.redhat.com/sgruszka/20101203_005.jpg > > There are two BUGs, first "sleeping function called from invalid > context" and then "unable to handle null pointer dereference". > The warning about sleeping is an artifact of the fact that we panic the box with irqs disabled I think (although I would think the fault handler would have re-enabled them properly). Not sure what the NULL pointer is from Neil > Stanislaw > > _______________________________________________ > kexec mailing list > kexec@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec -- 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/