From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 415FCDDE41 for ; Mon, 27 Apr 2009 18:17:23 +1000 (EST) Subject: Re: [BUG] 2.6.30-rc3: BUG triggered on some hugepage usages From: Benjamin Herrenschmidt To: Mel Gorman In-Reply-To: <20090424095116.GB14283@csn.ul.ie> References: <20090424095116.GB14283@csn.ul.ie> Content-Type: text/plain Date: Mon, 27 Apr 2009 18:15:38 +1000 Message-Id: <1240820138.7169.10.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, Linus Torvalds , Linux Kernel Mailing List List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 2009-04-24 at 10:51 +0100, Mel Gorman wrote: > I'm seeing some tests with sysbench+postgres+large pages fail on ppc64 > although a very clear pattern is not forming as to what exactly is > causing it. However, the libhugetlbfs regression tests (make && make > func) are triggering the following oops when calling mlock() and so > are > likely related. This would be a spurrious WARN_ON().. the test I added in there should not apply to huge pages. However, I don't see that causing a functional problem with sysbench+postgres Ben. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755116AbZD0IRe (ORCPT ); Mon, 27 Apr 2009 04:17:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751764AbZD0IRZ (ORCPT ); Mon, 27 Apr 2009 04:17:25 -0400 Received: from gate.crashing.org ([63.228.1.57]:57982 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751223AbZD0IRZ (ORCPT ); Mon, 27 Apr 2009 04:17:25 -0400 Subject: Re: [BUG] 2.6.30-rc3: BUG triggered on some hugepage usages From: Benjamin Herrenschmidt To: Mel Gorman Cc: Linus Torvalds , Linux Kernel Mailing List , linuxppc-dev@ozlabs.org In-Reply-To: <20090424095116.GB14283@csn.ul.ie> References: <20090424095116.GB14283@csn.ul.ie> Content-Type: text/plain Date: Mon, 27 Apr 2009 18:15:38 +1000 Message-Id: <1240820138.7169.10.camel@pasglop> Mime-Version: 1.0 X-Mailer: Evolution 2.24.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2009-04-24 at 10:51 +0100, Mel Gorman wrote: > I'm seeing some tests with sysbench+postgres+large pages fail on ppc64 > although a very clear pattern is not forming as to what exactly is > causing it. However, the libhugetlbfs regression tests (make && make > func) are triggering the following oops when calling mlock() and so > are > likely related. This would be a spurrious WARN_ON().. the test I added in there should not apply to huge pages. However, I don't see that causing a functional problem with sysbench+postgres Ben.