From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757919AbYDKBvO (ORCPT ); Thu, 10 Apr 2008 21:51:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752670AbYDKBvD (ORCPT ); Thu, 10 Apr 2008 21:51:03 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:46827 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752198AbYDKBvB (ORCPT ); Thu, 10 Apr 2008 21:51:01 -0400 Date: Thu, 10 Apr 2008 18:50:29 -0700 From: Andrew Morton To: Roland McGrath Cc: Paul Mackerras , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: Re: [PATCH] powerpc TLF_RESTORE_SIGMASK Message-Id: <20080410185029.ef80d5f9.akpm@linux-foundation.org> In-Reply-To: <20080411013635.1F4B126F992@magilla.localdomain> References: <20080403210842.6C88C26F98D@magilla.localdomain> <20080409235156.33ee33f2.akpm@linux-foundation.org> <20080411013635.1F4B126F992@magilla.localdomain> X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 10 Apr 2008 18:36:35 -0700 (PDT) Roland McGrath wrote: > > This crashes my powerpc mac g5. > > It worked fine on mine. > > > It happens after the boot, during the first login-over-ssh. > > Mine did lots of stuff fine. > > > This is with most of the rest of the -mm poopile applied. i386 and x86_64 > > seem OK. > > I had only tested with Linus's tree plus the small handful of post-2.6.25 > cleanup patches I've posted in the last few weeks. To be precise it was > 9597362d354f8655ece324b01d0c640a0e99c077 plus several of my cleanup patches > (that are probably all in -mm, but I'm not sure off hand). > > I'd rebased my tree today to 783e391b7b5b273cd20856d8f6f4878da8ec31b3 > anyway. I just tried the new kernel with the sigmask cleanups and only > a few other patches, and have no problems. > > The details of your crash make it look pretty unrelated to this code. > Off hand I would guess that it's some other bug from other -mm patches > that just happens only to bite you on powerpc. If the crash is not > intermittent and you bisected it to this one change, then I am at a > loss to see what might be happening. I'd have to leave it to Paul et > al to figure out if there is some strange powerpc juju going on. It's 100% repeatable and I bisected it to this change. I expect you could repeat it by applying it to http://userweb.kernel.org/~akpm/mmotm/ (or to -rc6-mm2, if I ever manage to get it to boot on something) and using http://userweb.kernel.org/~akpm/config-g5.txt