Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754360AbZFXPHS (ORCPT ); Wed, 24 Jun 2009 11:07:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752795AbZFXPHI (ORCPT ); Wed, 24 Jun 2009 11:07:08 -0400 Received: from casper.infradead.org ([85.118.1.10]:51127 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752314AbZFXPHH (ORCPT ); Wed, 24 Jun 2009 11:07:07 -0400 Date: Wed, 24 Jun 2009 08:07:53 -0700 From: Arjan van de Ven To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org Subject: upcoming kerneloops.org item: get_page_from_freelist Message-ID: <20090624080753.4f677847@infradead.org> Organization: Intel X-Mailer: Claws Mail 3.7.0 (GTK+ 2.14.7; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1819 Lines: 70 Hi, a new item is coming up fast in the kerneloops.org stats, and it's new in 2.6.31-rc; http://www.kerneloops.org/searchweek.php?search=get_page_from_freelist it's this warning in mm/page_alloc.c: * __GFP_NOFAIL is not to be used in new code. * * All __GFP_NOFAIL callers should be fixed so that they * properly detect and handle allocation failures. * * We most definitely don't want callers attempting to * allocate greater than single-page units with * __GFP_NOFAIL. */ WARN_ON_ONCE(order > 0); typical backtraces look like get_page_from_freelist __alloc_pages_nodemask alloc_pages_current alloc_slab_page new_slab __slab_alloc kmem_cache_alloc_notrace start_this_handle jbd2_journal_start and get_page_from_freelist __alloc_pages_nodemask alloc_pages_current alloc_slab_page new_slab __slab_alloc kmem_cache_alloc_notrace start_this_handle journal_start ext3_journal_start_sb ext3_journal_start ext3_dirty_inode but there are some other ones as well at the url above. git blame shows that commit dab48dab37d2770824420d1e01730a107fade1aa Author: Andrew Morton Date: Tue Jun 16 15:32:37 2009 -0700 introduced this WARN_ON..... -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/