[366645.364742] [drm] stuck on render ring
[366645.365269] [drm] GPU HANG: ecode 7:0:0x85fffff9, in chrome [8006], reason: Ring hung, action: reset
[366645.365270] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[366645.365271] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[366645.365272] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[366645.365273] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[366645.365273] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[366645.365377] ------------[ cut here ]------------
[366645.365382] WARNING: CPU: 2 PID: 12226 at /usr/src/linux-4.2.1-gentoo/drivers/gpu/drm/i915/intel_display.c:11002 intel_mmio_flip_work_func+0x366/0x380()
[366645.365383] WARN_ON(__i915_wait_request(mmio_flip->req, mmio_flip->crtc->reset_counter, false, NULL, &mmio_flip->i915->rps.mmioflips))
[366645.365384] Modules linked in:
[366645.365410] CPU: 2 PID: 12226 Comm: kworker/2:1 Tainted: G     U          4.2.1-gentoo #1
[366645.365410] Hardware name: LENOVO 2344BZU/2344BZU, BIOS G1ET94WW (2.54 ) 04/22/2013
[366645.365412] Workqueue: events intel_mmio_flip_work_func
[366645.365414]  ffffffff81bfeed0 ffff880145193ce8 ffffffff81895f84 0000000080000000
[366645.365416]  ffff880145193d38 ffff880145193d28 ffffffff81081ef5 ffff880145193cf8
[366645.365417]  ffff8801e9efd800 ffff88012c77cd80 ffff88031e294780 0000000000000080
[366645.365419] Call Trace:
[366645.365423]  [<ffffffff81895f84>] dump_stack+0x4f/0x7b
[366645.365426]  [<ffffffff81081ef5>] warn_slowpath_common+0x85/0xc0
[366645.365428]  [<ffffffff81081f71>] warn_slowpath_fmt+0x41/0x50
[366645.365430]  [<ffffffff81562666>] intel_mmio_flip_work_func+0x366/0x380
[366645.365432]  [<ffffffff810a7af1>] ? get_parent_ip+0x11/0x50
[366645.365434]  [<ffffffff810a7b81>] ? preempt_count_add+0x51/0xa0
[366645.365437]  [<ffffffff81098eb9>] process_one_work+0x149/0x410
[366645.365438]  [<ffffffff810994c1>] worker_thread+0x61/0x460
[366645.365440]  [<ffffffff81099460>] ? rescuer_thread+0x2e0/0x2e0
[366645.365442]  [<ffffffff81099460>] ? rescuer_thread+0x2e0/0x2e0
[366645.365444]  [<ffffffff8109e346>] kthread+0xd6/0xf0
[366645.365445]  [<ffffffff8109e270>] ? kthread_create_on_node+0x180/0x180
[366645.365448]  [<ffffffff8189ed1f>] ret_from_fork+0x3f/0x70
[366645.365449]  [<ffffffff8109e270>] ? kthread_create_on_node+0x180/0x180
[366645.365451] ---[ end trace 7a37a181535bdc11 ]---
[366645.366729] drm/i915: Resetting chip after gpu hang