From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759565Ab0E0TDn (ORCPT ); Thu, 27 May 2010 15:03:43 -0400 Received: from mtagate5.uk.ibm.com ([194.196.100.165]:52158 "EHLO mtagate5.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756758Ab0E0TDl (ORCPT ); Thu, 27 May 2010 15:03:41 -0400 Date: Thu, 27 May 2010 21:04:40 +0200 From: Heiko Carstens To: Christoph Lameter Cc: Pekka Enberg , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [BUG] slub crashes on dma allocations Message-ID: <20100527190440.GA2205@osiris.boeblingen.de.ibm.com> References: <20100526153757.GB2232@osiris.boeblingen.de.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 27, 2010 at 09:17:17AM -0500, Christoph Lameter wrote: > > So S390 has NUMA and the minalign is allowing very small slabs of 8/16/32 bytes? No NUMA, but minalign is 8. > Try this patch > > From: Christoph Lameter > Subject: SLUB: Allow full duplication of kmalloc array for 390 > > Seems that S390 is running out of kmalloc caches. > > Increase the number of kmalloc caches to a safe size. > > Signed-off-by: Christoph Lameter Yes, that fixes the bug. Thanks!