From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yh0-f46.google.com (mail-yh0-f46.google.com [209.85.213.46]) by kanga.kvack.org (Postfix) with ESMTP id 75AFA6B0031 for ; Mon, 17 Feb 2014 13:34:36 -0500 (EST) Received: by mail-yh0-f46.google.com with SMTP id v1so14373324yhn.33 for ; Mon, 17 Feb 2014 10:34:36 -0800 (PST) Received: from collaborate-mta1.arm.com (fw-tnat.austin.arm.com. [217.140.110.23]) by mx.google.com with ESMTP id w63si16762173yhj.37.2014.02.17.10.34.35 for ; Mon, 17 Feb 2014 10:34:35 -0800 (PST) Date: Mon, 17 Feb 2014 18:34:28 +0000 From: Catalin Marinas Subject: Re: Recent 3.x kernels: Memory leak causing OOMs Message-ID: <20140217183428.GA8687@arm.com> References: <20140216200503.GN30257@n2100.arm.linux.org.uk> <20140216214354.GA12947@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140216214354.GA12947@thunk.org> Sender: owner-linux-mm@kvack.org List-ID: To: Theodore Ts'o Cc: Russell King - ARM Linux , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org On Sun, Feb 16, 2014 at 04:43:54PM -0500, Theodore Ts'o wrote: > On Sun, Feb 16, 2014 at 08:05:04PM +0000, Russell King - ARM Linux wrote: > > I have another machine which OOM'd a week ago with plenty of unused swap > > - it uses ext3 on raid1 and is a more busy system. That took 41 days > > to show, and upon reboot, it got a kernel with kmemleak enabled. So far, > > after 7 days, kmemleak has found nothing at all. > > If kmemleak doesn't show anything, then presumably it's not a leak of > the slab object. Does /proc/meminfo show anything interesting? Maybe > it's a page getting leaked (which wouldn't be noticed by kmemleak) Kmemleak also doesn't notice leaked objects that are added to a list for example (still referenced). Maybe /proc/slabinfo would give some clues. -- Catalin -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org