[Bug 101511] [BAT][BYT] igt at gem_exec_reloc@basic-cpu-gtt-active generated a general protection fault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101511

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 25ffaa67459e988e73210543f7e05dfbf3f16163
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Jun 20 13:43:20 2017 +0100

    drm/i915: Pass the right flags to i915_vma_move_to_active()

    i915_vma_move_to_active() takes the execobject flags and not a boolean!
    Instead of passing EXEC_OBJECT_WRITE we passed true [i.e.
    EXEC_OBJECT_NEEDS_FENCE] causing us to start tracking the
    vma->last_fence access and since we forgot to clear that on unbinding,
    we caused a use-after-free.

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