On Mon, Nov 12, 2012 at 02:44:46PM -0800, Dave Hansen wrote: > I've been seeing a little goofiness with i915 video under the 3.7-rc's. > It looks like I'm seeing two separate issues. One, that the video > hardware hangs, spits some errors in dmesg, and then video acceleration > seems to stop working. Two, when it does this, apport goes digging in > debugfs for information about the hang. When it does this, something > does an order-9 (2MB) kmalloc() which fails. > > While debugfs is expected to be a _bit_ rickety, I do think order-9 > is a bit excessive for an in-kernel allocation, even a temporary > one. I'm not quite sure if it has done this for a long time, and I'm > only hitting it now since I'm seeing a _separate_ i915 hang. > > Relevant parts of dmesg, lspci, and kernel config are here: > > http://sr71.net/~dave/linux/i915-wonky/ Ironlake gpu, so if this is a regression introduced in 3.7 and things work normally in 3.6, it's likely that you're hitting a variant of https://bugs.freedesktop.org/show_bug.cgi?id=55984 It'd be best if you can subscribe yourselfes there, so that all potential testers are at the same place. For the 2MB allocation, this is a known problem, unfortunately reworking the dump code will be major work. Which is why it hasn't been done yet. But fixing that is somewhere on our giant todo list. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
