[Bug 109693] Hang of the graphics driver and assertion on si_upload_vertex_buffer_descriptors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109693

            Bug ID: 109693
           Summary: Hang of the graphics driver and assertion on
                    si_upload_vertex_buffer_descriptors
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: jpetridis at gnome.org
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 143420
  --> https://bugs.freedesktop.org/attachment.cgi?id=143420&action=edit
glxinfo output

After this [1] commit, the GL tests we have on gstreamer started to causing a
hang in my machine (Gstreamer issue [2]). I was running mesa 18.2.8 and it was
constantly hanging upon running those specific tests. Once I upgraded to mesa
18.3.3 half the times it hangs and the other half it hits the following
assertion. Compiling and running against mesa 19.0 rc5 didn't change things.

pipelines_gl_launch_lines:
../src/gallium/drivers/radeonsi/si_descriptors.c:1150:
si_upload_vertex_buffer_descriptors: Assertion `num_records >= 0 && num_records
<= UINT_MAX' failed.

the whole log is [here] [3]

To reproduce you can run the following:

```
git clone https://gitlab.freedesktop.org/gstreamer/gst-build.git
cd gst-build
meson build -Dintrospection=disabled -Dgtk_doc=disabled -Dexamples=disabled
-Dsharp=disabled
ninja -C build/
./gst-uninstalled.py gst-validate-launcher check.gst-plugins-base.pipelines_gl*
-fs --mute --dump-on-failure --no-display --meson-no-rebuild -M
"/tmp/validate-output/"
```

gpu info:

lspci -v
04:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven
Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev c3) (prog-if 00
[VGA controller])
        Subsystem: Lenovo Device 3801
        Flags: bus master, fast devsel, latency 0, IRQ 71
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at d0000000 (64-bit, prefetchable) [size=2M]
        I/O ports at 1000 [size=256]
        Memory at d0600000 (32-bit, non-prefetchable) [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

➜ glxinfo | grep 'OpenGL vendor'
OpenGL vendor string: X.Org


[1]:
https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/commit/acc098a736949d465d7f77e5de94a75627209147
[2]: https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/issues/543
[3]:
https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/issues/543#note_121059

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