On Mon, Mar 06, 2017 at 01:10:48PM +0100, Pavel Machek wrote:
On Mon 2017-03-06 11:15:28, Chris Wilson wrote:
On Mon, Mar 06, 2017 at 12:01:51AM +0100, Pavel Machek wrote:
Hi!
mplayer stopped working after a while. Dmesg says:
[ 3000.266533] cdc_ether 2-1.2:1.0 usb0: register 'cdc_ether' at
Now I'm pretty sure it is a regression in v4.11-rc0. Any ideas what to try? Bisect will be slow and nasty :-(.
I came the conclusion that #99671 is the ring HEAD overtaking the TAIL, and under the presumption that your bug matches (as the symptoms do):
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 4ffa35faff49..62e31a7438ac 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -782,10 +782,10 @@ static void i9xx_submit_request(struct drm_i915_gem_request *request) { struct drm_i915_private *dev_priv = request->i915;
i915_gem_request_submit(request);GEM_BUG_ON(!IS_ALIGNED(request->tail, 8)); I915_WRITE_TAIL(request->engine, request->tail);
i915_gem_request_submit(request);}
static void i9xx_emit_breadcrumb(struct drm_i915_gem_request *req, u32 *cs)
I applied it as:
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 91bc4ab..9c49c7a 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1338,9 +1338,9 @@ static void i9xx_submit_request(struct drm_i915_gem_request *request) { struct drm_i915_private *dev_priv = request->i915;
- i915_gem_request_submit(request);
- I915_WRITE_TAIL(request->engine, request->tail);
- i915_gem_request_submit(request);
}
static void i9xx_emit_breadcrumb(struct drm_i915_gem_request *req,
Hmm. But your next mail suggest that it may not be smart to try to boot it? :-).
Don't bother, it'll promptly hang. -Chris