From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f182.google.com (mail-wi0-f182.google.com [209.85.212.182]) by kanga.kvack.org (Postfix) with ESMTP id 7A2436B0179 for ; Wed, 11 Jun 2014 18:00:24 -0400 (EDT) Received: by mail-wi0-f182.google.com with SMTP id bs8so1948030wib.15 for ; Wed, 11 Jun 2014 15:00:23 -0700 (PDT) Received: from mail-wg0-x233.google.com (mail-wg0-x233.google.com [2a00:1450:400c:c00::233]) by mx.google.com with ESMTPS id jp7si44006311wjc.62.2014.06.11.15.00.22 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 11 Jun 2014 15:00:23 -0700 (PDT) Received: by mail-wg0-f51.google.com with SMTP id x12so376122wgg.22 for ; Wed, 11 Jun 2014 15:00:22 -0700 (PDT) Subject: Re: kmemleak: Unable to handle kernel paging request Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.2\)) Content-Type: text/plain; charset=windows-1252 From: Catalin Marinas In-Reply-To: Date: Wed, 11 Jun 2014 23:00:18 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20140611173851.GA5556@MacBook-Pro.local> Sender: owner-linux-mm@kvack.org List-ID: To: Denis Kirjanov Cc: "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" On 11 Jun 2014, at 21:04, Denis Kirjanov wrote: > On 6/11/14, Catalin Marinas wrote: >> On Wed, Jun 11, 2014 at 04:13:07PM +0400, Denis Kirjanov wrote: >>> I got a trace while running 3.15.0-08556-gdfb9454: >>>=20 >>> [ 104.534026] Unable to handle kernel paging request for data at >>> address 0xc00000007f000000 >>=20 >> Were there any kmemleak messages prior to this, like "kmemleak >> disabled"? There could be a race when kmemleak is disabled because of >> some fatal (for kmemleak) error while the scanning is taking place >> (which needs some more thinking to fix properly). >=20 > No. I checked for the similar problem and didn't find anything = relevant. > I'll try to bisect it. Does this happen soon after boot? I guess it=92s the first scan (scheduled at around 1min after boot). Something seems to be telling kmemleak that there is a valid memory block at 0xc00000007f000000. 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