On Mon, Mar 23, 2015 at 02:34:27PM -0400, Josh Boyer wrote:
On Mon, Mar 23, 2015 at 11:33 AM, Josh Boyer jwboyer@fedoraproject.org wrote:
<snip>
Xi Ruoyao (1): drm/i915: Ensure plane->state->fb stays in sync with plane->fb
Turns out to be that commit.
git bisect start 'drivers/gpu/drm/i915/' # good: [b314acaccd7e0d55314d96be4a33b5f50d0b3344] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input git bisect good b314acaccd7e0d55314d96be4a33b5f50d0b3344 # bad: [bc465aa9d045feb0e13b4a8f32cc33c1943f62d6] Linux 4.0-rc5 git bisect bad bc465aa9d045feb0e13b4a8f32cc33c1943f62d6 # bad: [319c1d420a0b62d9dbb88104afebaabc968cdbfa] drm/i915: Ensure plane->state->fb stays in sync with plane->fb git bisect bad 319c1d420a0b62d9dbb88104afebaabc968cdbfa # first bad commit: [319c1d420a0b62d9dbb88104afebaabc968cdbfa] drm/i915: Ensure plane->state->fb stays in sync with plane->fb
Doing a straight revert on top of 4.0-rc5 makes things work again, albeit with the WARN_ON(obj->frontbuffer_bits) splat still being there.
Can you please test the tip of drm-fixes:
commit 8218c3f4df3bb1c637c17552405039a6dd3c1ee1 Author: Daniel Vetter daniel.vetter@ffwll.ch Date: Fri Feb 27 12:58:13 2015 +0100
drm: Fixup racy refcounting in plane_force_disable
http://cgit.freedesktop.org/~airlied/linux/commit/?h=drm-fixes&id=8218c3...
Because fumble that patch didn't make it to drm-fixes a while ago and instead landed in drm-next.
Thanks, Daniel