Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933048Ab2FAOPI (ORCPT ); Fri, 1 Jun 2012 10:15:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59713 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932595Ab2FAOPG (ORCPT ); Fri, 1 Jun 2012 10:15:06 -0400 Date: Fri, 1 Jun 2012 10:14:59 -0400 From: Dave Jones To: Hugh Dickins Cc: Linus Torvalds , Andrew Morton , Cong Wang , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: WARNING: at mm/page-writeback.c:1990 __set_page_dirty_nobuffers+0x13a/0x170() Message-ID: <20120601141459.GC1732@redhat.com> Mail-Followup-To: Dave Jones , Hugh Dickins , Linus Torvalds , Andrew Morton , Cong Wang , linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20120530163317.GA13189@redhat.com> <20120531005739.GA4532@redhat.com> <20120601023107.GA19445@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 772 Lines: 17 On Fri, Jun 01, 2012 at 01:44:44AM -0700, Hugh Dickins wrote: > So I'm wondering if your trinity fuzzer happens to succeed a lot more > often on madvise MADV_REMOVEs than fallocate FALLOC_FL_PUNCH_HOLEs, and > the bug you converged on is not in tmpfs, but in ext4 (or xfs? or ocfs2?), > which began to support MADV_REMOVE with that commit. One more thing: I happened to see this during a kernel build last night on another machine too, so it's not just fuzzing fallout. I'm surprised more people aren't seeing it. Dave -- 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/