From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Nyhus Subject: Re: [next] Null pointer dereference in nouveau_vm_map_sg Date: Tue, 17 Jan 2012 00:57:50 +0100 Message-ID: <201201170057.51404.martin.nyhus@gmx.com> References: <201201152231.08561.martin.nyhus@gmx.com> <20120116203059.GC4482@homer.localdomain> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120116203059.GC4482@homer.localdomain> Sender: linux-kernel-owner@vger.kernel.org To: Jerome Glisse Cc: Ben Skeggs , David Airlie , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org On Monday 16. January 2012 21:30:59 Jerome Glisse wrote: > On Sun, Jan 15, 2012 at 10:31:08PM +0100, Martin Nyhus wrote: > > In some cases mem will be null in nouveau_vm_map_sg, resulting in a crash > > at drivers/gpu/drm/nouveau/nouveau_vm.c:84. It seems to be easy enough to > > reproduce, so I can test patches if needed. > How do you trigger this ? Opening 10-15 high-res pictures in Firefox triggers it every time. Doing the same using Gimp does not, and neither does Firefox and lots of small images (eg. Google image search). Martin