From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757922Ab3BRK1v (ORCPT ); Mon, 18 Feb 2013 05:27:51 -0500 Received: from mail-ea0-f169.google.com ([209.85.215.169]:62381 "EHLO mail-ea0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755908Ab3BRK1t (ORCPT ); Mon, 18 Feb 2013 05:27:49 -0500 Message-ID: <5122021F.1060207@suse.cz> Date: Mon, 18 Feb 2013 11:27:43 +0100 From: Jiri Slaby User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:19.0) Gecko/20130124 Thunderbird/19.0 MIME-Version: 1.0 To: Marcin Slusarz , bskeggs@redhat.com CC: dri-devel@lists.freedesktop.org, LKML Subject: WARNING: at drivers/gpu/drm/nouveau/core/core/mm.c:242 X-Enigmail-Version: 1.6a1pre Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, we have a report of WARNING from 3.7.6 in nouveau at drivers/gpu/drm/nouveau/core/core/mm.c:242 here: https://bugzilla.novell.com/show_bug.cgi?id=802347#c11 There is an order 4 allocation failure in nouveau_drm_open -> nouveau_vm_create, i.e. this one failed: vm->pgt = kcalloc(vm->lpde - vm->fpde + 1, sizeof(*vm->pgt), GFP_KERNEL); Then, on the error path in still in nouveau_drm_open, it is followed by a call to nouveau_cli_destroy. But that one calls nouveau_vm_ref -> nouveau_mm_fini -> nouveau_vm_del -> nouveau_mm_fini which triggers the warning. Any ideas? thanks, -- js suse labs