[Bug 111612] [CI][DRMTIP] igt at prime_busy@hang-blt - incomplete - kernel BUG at drivers/dma-buf/dma-buf.c:99!
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu Nov 7 16:25:11 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=111612
--- Comment #16 from Michael Ruhl <michael.j.ruhl at intel.com> ---
(In reply to Chris Wilson from comment #2)
> + BUG_ON(dmabuf->cb_shared.active || dmabuf->cb_excl.active);
>
> which is quite odd as the exported dmabuf has no bearing on the native
> object and its fences.
Is it possible that this is occurring because of these patches:
67c97fb79a7f ("dma-buf: add reservation_object_fences helper")
dd7a7d1ff2f1 ("drm/i915: use new reservation_object_fences helper")
0e1d8083bddb ("dma-buf: further relax reservation_object_add_shared_fence")
5d344f58da76 ("dma-buf: nuke reservation_object seq number")
which was reverted by:
dma-buf: Restore seqlock around dma_resv updates
?
I am having difficulty placing these change.
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