From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933156Ab2FGWFw (ORCPT ); Thu, 7 Jun 2012 18:05:52 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:54133 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933030Ab2FGWFv (ORCPT ); Thu, 7 Jun 2012 18:05:51 -0400 Date: Thu, 7 Jun 2012 15:05:49 -0700 From: Andrew Morton To: Stephen Rothwell Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, Konstantin Khlebnikov , Oleg Nesterov Subject: Re: linux-next: boot problem with next-20120607 Message-Id: <20120607150549.63f3ab81.akpm@linux-foundation.org> In-Reply-To: <20120607135320.7a1298385346bc238a0f92b0@canb.auug.org.au> References: <20120607135320.7a1298385346bc238a0f92b0@canb.auug.org.au> X-Mailer: Sylpheed 3.0.2 (GTK+ 2.20.1; x86_64-pc-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, 7 Jun 2012 13:53:20 +1000 Stephen Rothwell wrote: > Hi Andrew, > > My boot of next-20120607 in PowerPC produces lots of these warnings: > > BUG: Bad rss-counter state mm:c000000278508000 idx:0 val:-27 > BUG: Bad rss-counter state mm:c000000278284000 idx:0 val:-27 > BUG: Bad rss-counter state mm:c000000279e13000 idx:0 val:-27 > BUG: Bad rss-counter state mm:c000000278285400 idx:0 val:-27 > > And so on (with different mm, idx and val numbers). Searching showed me > commit "mm: correctly synchronize rss-counters at exit/exec" which seems > to be there to fix this exact problem? Well that's a worry. Are you really sure mm-correctly-synchronize-rss-counters-at-exit-exec.patch was applied at the time? There's been an extended amount of inconclusive waffling on that patch, but I thought it concerned the best way to fix it, rather than *whether* it fixes it.