[Bug 779642] vaapi: direct download/upload crashes in gallium backends

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=779642

--- Comment #8 from Alicia Boya García <aboya at igalia.com> ---
Since I was CCed here, I'll post the results in my system:

AMD Radeon (TM) RX 460 Graphics (AMD POLARIS11 / DRM 3.19.0 /
4.14.16-300.fc27.x86_64, LLVM 5.0.0) [amdgpu]
GStreamer 1.12.4
Fedora 27

Neither of the testcases provided here caused a crash (including Serenity
Trailer).

All of them worked fine except this one, which showed an error, same as the
post above but without the crash:

$ GST_DEBUG=WARN gst-launch-1.0 videotestsrc is-live=true !
video/x-raw,format=BGRx ! vaapipostproc ! video/x-raw,format=NV12 ! fakesink

0:00:00.360818739 14263 0x559f567b14f0 ERROR          vaapipostproc
gstvaapipostproc.c:810:gst_vaapipostproc_process_vpp:<vaapipostproc0> failed to
apply VPP filters (error 2)
0:00:00.360857735 14263 0x559f567b14f0 WARN                 basesrc
gstbasesrc.c:2939:gst_base_src_loop:<videotestsrc0> error: Internal data stream
error.
0:00:00.360865825 14263 0x559f567b14f0 WARN                 basesrc
gstbasesrc.c:2939:gst_base_src_loop:<videotestsrc0> error: streaming stopped,
reason error (-5)

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