Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758674Ab1DYRTI (ORCPT ); Mon, 25 Apr 2011 13:19:08 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:49441 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758203Ab1DYRTG convert rfc822-to-8bit (ORCPT ); Mon, 25 Apr 2011 13:19:06 -0400 MIME-Version: 1.0 In-Reply-To: <20110425190032.7904c95d@neptune.home> References: <20110424202158.45578f31@neptune.home> <20110424235928.71af51e0@neptune.home> <20110425114429.266A.A69D9226@jp.fujitsu.com> <20110425111705.786ef0c5@neptune.home> <20110425180450.1ede0845@neptune.home> <20110425190032.7904c95d@neptune.home> From: Linus Torvalds Date: Mon, 25 Apr 2011 10:10:28 -0700 Message-ID: Subject: Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression? To: =?ISO-8859-1?Q?Bruno_Pr=E9mont?= Cc: Mike Frysinger , KOSAKI Motohiro , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, "Paul E. McKenney" , Pekka Enberg Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1572 Lines: 37 On Mon, Apr 25, 2011 at 10:00 AM, Bruno Pr?mont wrote: > > I hope tiny-rcu is not that broken... as it would mean driving any > PREEMPT_NONE or PREEMPT_VOLUNTARY system out of memory when compiling > packages (and probably also just unpacking larger tarballs or running > things like du). I'm sure that TINYRCU can be fixed if it really is the problem. So I just want to make sure that we know what the root cause of your problem is. It's quite possible that it _is_ a real leak of filp or something, but before possibly wasting time trying to figure that out, let's see if your config is to blame. > And with system doing nothing (except monitoring itself) memory usage > goes increasing all the time until it starves (well it seems to keep > ~20M free, pushing processes it can to swap). Config is just being > make oldconfig from working 2.6.38 kernel (answering default for new > options) How sure are you that the system really is idle? Quite frankly, the constant growing doesn't really look idle to me. > Attached graph matching numbers of previous mail. (dropping caches was at > 17:55, system idle since then) Nothing at all going on in 'ps' during that time? And what does slabinfo say at that point now that kmemleak isn't dominating everything else? Linus -- 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/