Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755670Ab0HXU1l (ORCPT ); Tue, 24 Aug 2010 16:27:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:2456 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755328Ab0HXU1j (ORCPT ); Tue, 24 Aug 2010 16:27:39 -0400 Date: Tue, 24 Aug 2010 16:27:18 -0400 From: Don Zickus To: Cyrill Gorcunov Cc: Robert Richter , Ingo Molnar , Peter Zijlstra , Lin Ming , "fweisbec@gmail.com" , "linux-kernel@vger.kernel.org" , "Huang, Ying" , Yinghai Lu , Andi Kleen Subject: Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs Message-ID: <20100824202718.GC4879@redhat.com> References: <9g472epksbkxhgmw6a3qh8r5.1282316687153@email.android.com> <20100820152510.GA4167@elte.hu> <20100823085339.GA26713@elte.hu> <20100824171504.GI26154@erda.amd.com> <20100824172806.GF5723@lenovo> <20100824184658.GB4879@redhat.com> <20100824185458.GG5723@lenovo> <20100824195240.GA5281@lenovo> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100824195240.GA5281@lenovo> 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: 1106 Lines: 27 On Tue, Aug 24, 2010 at 11:52:40PM +0400, Cyrill Gorcunov wrote: > > I use 2.6.34 atm. Letme try 2.6.36 (which might require some time to recompile). > > > > -- Cyrill > > Don, for me it fails with somehow unrelated page handling fault - in > reiserfs_evict_inode O_o Fails in __get_cpu_var I suspect might means > a problem either in per-cpu allocator itself or we screw pointer somehow. > Weird. I just found out (with the help of the crash utility and Dave A.) that Robert's percpu struct nmi clashes with the exception entry point .nmi. I only see this problem in 2.6.36, so I am not sure what changed with regards to compiler flags to confuse variables with text segments. But renaming the percpu struct nmi to nmidon fixed the problem for me (I am open to other suggestions :-) ). Regarding your reiserfs, what was the variable's name? Cheers, Don -- 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/