Chris Wilson ef29440b3c drm/i915: Avoid using rq->engine after free during i915_fence_release ... In order to be valid to dereference during the i915_fence_release, after retiring the fence and releasing its refererences, we assume that rq->engine can only be a real engine (that stay intact until the device is shutdown after all fences have been flushed). However, due to a quirk of preempt-to-busy, we may retire a request that still belongs to a virtual engine and so eventually free it with rq->engine being invalid. To avoid dereferencing that invalid engine, we look at the execution_mask which if it indicates it may be executed on more than one engine, we know it originated on a virtual engine and may still be on one. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/1906 Fixes: 43acd6516c ("drm/i915: Keep a per-engine request pool") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200521140617.30015-2-chris@chris-wilson.co.uk (cherry picked from commit 32a4605b38) Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>		2020-05-25 15:40:39 +03:00
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drm	drm/i915: Avoid using rq->engine after free during i915_fence_release	2020-05-25 15:40:39 +03:00
host1x	drm/tegra: Fixes for v5.6-rc1	2020-02-07 12:22:30 +10:00
ipu-v3
trace	gpu/trace: add a gpu total memory usage tracepoint	2020-03-03 17:52:41 -05:00
vga
Makefile	gpu/trace: add a gpu total memory usage tracepoint	2020-03-03 17:52:41 -05:00