[Bug 111037] [CI][BAT] igt at i915_selftest@live_mman - dmesg-warn - BUG drm_i915_gem_object: Poison overwritten

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111037

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
If I am not mistaken, that is a stray 64b write  of 1, 144 bytes into a
i915_gem_object

On my kernel that would put it around:

offsetof(drm_gem_object.vma_node)=24
offsetofend(drm_gem_object.vma_node)=208
...
offsetof(drm_gem_object.vma_node.vm_node.rb_hole_addr)=144

That doesn't seem particularly valid for a rbtree_node.parent, so either it's a
completely stray write, my counting is wrong and its not 144 bytes in, or
there's a massive layout difference between my kernel and CI.

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