From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751451AbWD1UvE (ORCPT ); Fri, 28 Apr 2006 16:51:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751797AbWD1UvD (ORCPT ); Fri, 28 Apr 2006 16:51:03 -0400 Received: from www.osadl.org ([213.239.205.134]:30132 "EHLO mail.tglx.de") by vger.kernel.org with ESMTP id S1751451AbWD1UvC (ORCPT ); Fri, 28 Apr 2006 16:51:02 -0400 Subject: Re: [BUG 2.6.16-rt18] BUG at kernel/rtmutex.c:639! From: Thomas Gleixner Reply-To: tglx@linutronix.de To: Vernon Mauery Cc: kernel list , Ingo Molnar In-Reply-To: <200604280713.45219.vernux@us.ibm.com> References: <200604280713.45219.vernux@us.ibm.com> Content-Type: text/plain Date: Fri, 28 Apr 2006 22:53:09 +0200 Message-Id: <1146257590.1322.637.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2006-04-28 at 07:13 -0700, Vernon Mauery wrote: > Ingo, > > On an IBM Intellistation A-Pro I am seeing the bug regularly as seen below. > We also see this bug on an LS-20 blade. The way this bug is triggered is > to add 'irqpoll' to the kernel command line. If we remove this from the > command line, we don't see this bug. I know the easy answer is that if you > don't want to see the bug, don't use irqpoll. So we don't. But we thought > that just in case this bug does expose something real that it should be > reported. That's a lock recursion caused by the irqpoll option. Needs some thoughts to fix it. Thanks for reporting though. tglx