[Bug 110394] Skylake GPU HANG while gstreamer H264 vaapi encoding from MJPEG vaapi decode on drm-tip

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110394

--- Comment #3 from Andy Nicholas <andy.nicholas at shield.ai> ---
My DRM-TIP kernel is from:

commit 00cb3798a5d008c3f824fe7c89c663dba66155c3 (HEAD -> drm-tip,
origin/drm-tip, origin/HEAD)
Author: Rodrigo Vivi <rodrigo.vivi at intel.com>
Date:   Fri Mar 22 12:52:43 2019 -0700


These config switches were ADDED to DRM-TIP so I could boot from eMMC and
configure for lower kernel latency and see serial output when the GPU goes
bonkers:

CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_CONSOLE=y
CONFIG_USB_SERIAL_FTDI_SIO=y
CONFIG_USB_PL2303=y
CONFIG_FRAME_POINTER=y
CONFIG_LATENCYTOP=y
CONFIG_MMC=y
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_MINORS=8
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PCI=y
CONFIG_MMC_RICOH_MMC=y
CONFIG_MMC_SDHCI_ACPI=y
CONFIG_DEBUG_INFO=y
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KEXEC_FILE=y
CONFIG_ARCH_HAS_KEXEC_PURGATORY=y
CONFIG_KEXEC_JUMP=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
CONFIG_DRM_I915_DEBUG=y
CONFIG_DRM_I915_DEBUG_RUNTIME_PM=y
CONFIG_USB_RTL8152=y
CONFIG_USB_NET_DRIVERS=y

transcoding script using gstreamer is:


#!/usr/bin/env bash

set -ex

tcount=0
while true; do
        echo "Transcode: iteration $tcount" | tee tcount.txt

        # remove old output
        rm -f /tmp/transcode-output.mp4

        time gst-launch-1.0 filesrc location=
andy-movies/mjpeg-outside-640x480.mkv ! matroskademux ! vaapijpegdec !
vaapih264enc ! qtmux ! filesink location=/tmp/gst-output.mp4

        tcount=$((tcount+1))    
done

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