From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754076Ab2BOSdY (ORCPT ); Wed, 15 Feb 2012 13:33:24 -0500 Received: from mx1.redhat.com ([209.132.183.28]:30221 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753253Ab2BOSdW (ORCPT ); Wed, 15 Feb 2012 13:33:22 -0500 Date: Wed, 15 Feb 2012 13:33:18 -0500 From: Dave Jones To: Linux Kernel Cc: linux-mm@kvack.org, Fedora Kernel Team Subject: exit_mmap() BUG_ON triggering since 3.1 Message-ID: <20120215183317.GA26977@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , linux-mm@kvack.org, Fedora Kernel Team MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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 We've had three reports against the Fedora kernel recently where a process exits, and we're tripping up the BUG_ON(mm->nr_ptes > (FIRST_USER_ADDRESS+PMD_SIZE-1)>>PMD_SHIFT); in exit_mmap() It started happening with 3.1, but still occurs on 3.2 (no 3.3rc reports yet, but it's not getting much testing). https://bugzilla.redhat.com/show_bug.cgi?id=786632 https://bugzilla.redhat.com/show_bug.cgi?id=787527 https://bugzilla.redhat.com/show_bug.cgi?id=790546 I don't see anything special in common between the loaded modules. anyone? Dave