Chris Wilson 6e068270b7 drm/i915: Clear breadcrumb node when cancelling signaling ... When we call intel_engine_cancel_signaling() to stop reporting when a request is completed via an asynchronous signal, we remove that request from the breadcrumb wait queue. However, we may be concurrently processing that request in the signaler itself, the actual operations on the request's node itself are serialised but we do not actually clear the waiter after removing it from the tree allowing both parties to attempt to do so and corrupting the rbtree. (Previously removing from the breadcrumb wait queue could only be done on behalf of i915_wait_request, so this race could not happen). Reported-by: "He, Bo" <bo.he@intel.com> Fixes: 9eb143bbec ("drm/i915: Allow a request to be cancelled") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: "He, Bo" <bo.he@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Michał Winiarski <michal.winiarski@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171115121458.24655-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (cherry picked from commit c534612e78) Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2017-11-21 11:39:56 +02:00
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drm	drm/i915: Clear breadcrumb node when cancelling signaling	2017-11-21 11:39:56 +02:00
host1x	gpu: host1x: Fix incorrect comment for channel_request	2017-10-20 14:19:52 +02:00
ipu-v3	gpu: ipu-v3: pre: implement workaround for ERR009624	2017-10-11 12:04:24 +02:00
vga	vgaarb: Factor out EFI and fallback default device selection	2017-10-18 10:04:56 +02:00
Makefile