Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758814AbZDELCU (ORCPT ); Sun, 5 Apr 2009 07:02:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756871AbZDELB6 (ORCPT ); Sun, 5 Apr 2009 07:01:58 -0400 Received: from www.tglx.de ([62.245.132.106]:56504 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756712AbZDELB5 (ORCPT ); Sun, 5 Apr 2009 07:01:57 -0400 Date: Sun, 5 Apr 2009 13:00:49 +0200 (CEST) From: Thomas Gleixner To: Remy Bohmer cc: Steven Rostedt , Ingo Molnar , LKML , linux-rt-users Subject: Re: System deadlock on 2.6.24-rt20 (-rt27 panics on locking-api-selftests) In-Reply-To: <3efb10970904030502q1068731fl5b92f93d5341b43e@mail.gmail.com> Message-ID: References: <3efb10970904030502q1068731fl5b92f93d5341b43e@mail.gmail.com> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 913 Lines: 28 On Fri, 3 Apr 2009, Remy Bohmer wrote: > Hello Thomas, > > 2009/4/3 Remy Bohmer : > > Hello Thomas, > > > >>> Does anybody recognise these backtraces? And if so, is there a fix for > >>> it already? > >> > >> http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.24.7-rt27.bz2 > > I integrated -rt27, but this one fails on the locking api-selftests. > Is this a bug in the selftest? Or is there a real locking bug behind > it? Don't think so. The rw locks fixups which we did between -rt20 and -rt27 might have screwed the lockdep selftests where we create deadlock situations. What happens if you disable the self tests ? Thanks, tglx -- 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/