Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751634Ab1C2Ht5 (ORCPT ); Tue, 29 Mar 2011 03:49:57 -0400 Received: from mga09.intel.com ([134.134.136.24]:17501 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750977Ab1C2Ht4 (ORCPT ); Tue, 29 Mar 2011 03:49:56 -0400 Message-Id: X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.63,260,1299484800"; d="scan'208";a="620314171" Date: Tue, 29 Mar 2011 08:49:52 +0100 To: Pekka Enberg Subject: Re: [git pull] drm fixes for -rc1 Cc: Dave Airlie , torvalds@linux-foundation.org, DRI mailing list , linux-kernel@vger.kernel.org References: <849307$c6tdto@azsmga001.ch.intel.com> From: Chris Wilson In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1374 Lines: 31 On Tue, 29 Mar 2011 10:11:21 +0300, Pekka Enberg wrote: > On Mon, Mar 28, 2011 at 10:09 PM, Chris Wilson wrote: > Let me know if there's a patch/git tree to test. The flicker is > extremely annoying and I boot the machine often because it's my main > kernel development laptop. I will let you know as soon as I have something ready for testing. > > That's an old userspace bug, which so far no one has been able to > > reproduce on the upstream ddx. > > Is it harmless? Why is the kernel complaining about it? Being pragmatic, so that I can tell one EINVAL apart from another. And it's only mostly harmless. Userspace is attempting to write to/read from a buffer it has marked as being no longer required, so some rendering is going amiss. And it does not rule out the possibility that at some point it will catch the error later and result in a SIGBUS being sent to the application (probably X). However since it is not a kernel error nor is it fatal, that and a lot of similar messages can be demoted to debug. -Chris -- Chris Wilson, Intel Open Source Technology Centre -- 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/