Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S947307AbcJaVwH (ORCPT ); Mon, 31 Oct 2016 17:52:07 -0400 Received: from mail.skyhub.de ([78.46.96.112]:37938 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S947256AbcJaVwG (ORCPT ); Mon, 31 Oct 2016 17:52:06 -0400 Date: Mon, 31 Oct 2016 22:52:01 +0100 From: Borislav Petkov To: "Deucher, Alexander" Cc: "'Larry Finger'" , Linus Torvalds , "linux-kernel@vger.kernel.org" , "driver-devel@vger.kernel.org" Subject: Re: [PATCH] drm/radeon: Fix kernel panic on shutdown Message-ID: <20161031215201.jbppfpufehdqjcjw@pd.tnic> References: <20161031044053.24955-1-Larry.Finger@lwfinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20161014 (1.7.1) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1479 Lines: 34 On Mon, Oct 31, 2016 at 04:21:55PM +0000, Deucher, Alexander wrote: > > -----Original Message----- > > From: Larry Finger [mailto:larry.finger@gmail.com] On Behalf Of Larry Finger > > Sent: Monday, October 31, 2016 12:41 AM > > To: Linus Torvalds > > Cc: linux-kernel@vger.kernel.org; driver-devel@vger.kernel.org; Larry > > Finger; Deucher, Alexander > > Subject: [PATCH] drm/radeon: Fix kernel panic on shutdown > > > > Since commit a481daa88fd4 ("drm/radeon: always apply pci shutdown > > callbacks"), a Dell Latitude D600 laptop has crashed on shutdown. The > > PCI Identification of the graphics adapter is "VGA compatible controller > > [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV250/M9 GL [Mobility > > FireGL 9000/Radeon 9000] [1002:4c66] (rev 01)". > > > > Prior to commit b0c80bd5d2e3 ("drm/radeon: fix up dp aux tear down (v2)"), > > I have no idea where the panic happened as the screen was blanked before > > the crash. Since that more recent change, the panic has been in routine > > radeon_connector_unregister(), and has been shown to be due to a NULL > > value in the ddc_bus member of struct drm_connector. > > > > Fixes: a481daa88fd4 ("drm/radeon: always apply pci shutdown callbacks") > > Signed-off-by: Larry Finger > > Cc: Alex Deucher > > Applied. Thanks! Reported-and-tested-by: Borislav Petkov -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.