Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753738Ab2KYXT7 (ORCPT ); Sun, 25 Nov 2012 18:19:59 -0500 Received: from mailout-de.gmx.net ([213.165.64.22]:50521 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753564Ab2KYXT5 (ORCPT ); Sun, 25 Nov 2012 18:19:57 -0500 X-Authenticated: #4463548 X-Provags-ID: V01U2FsdGVkX18ZM0AAdnwZP6wBKqKXkDHqvZ7uzHRcQ2vv1oZYJC rT8W1tG1wrdh+w Message-ID: <1353885594.22969.34.camel@soupermouf> Subject: Re: kmemleak failure (was Re: backing up ext4 fs, system unresponsive, thrashing like crazy even though swap is unused) From: Dimitrios Apostolou To: linux-kernel@vger.kernel.org Date: Mon, 26 Nov 2012 01:19:54 +0200 In-Reply-To: <1353883315.22969.31.camel@soupermouf> References: <1353851735.22969.18.camel@soupermouf> <1353871800.22969.28.camel@soupermouf> <1353883315.22969.31.camel@soupermouf> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.4.4 (3.4.4-2.fc17) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 895 Lines: 21 On Mon, 2012-11-26 at 00:41 +0200, Dimitrios Apostolou wrote: > Hello, > > I tried running a kmemleak and DEBUG_SLUB enabled kernel, but almost > within 5 minutes of starting the backup process, I got: > > [ 486.863124] kmemleak: Cannot allocate a kmemleak_object structure > [ 486.887195] kmemleak: Automatic memory scanning thread ended > [ 486.906604] kmemleak: Kernel memory leak detector disabled Important detail: I decided to try kmemleak after suspecting a leak because 'echo 3>/proc/sys/vm/drop_caches' left about 90MB out of 118MB of ext4_inode_cache, and I found no way to get rid of that (via remounting filesystems for example). -- 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/