[Bug 792773] New: [gstreamer-vaapi-master][SKL/APL/KBL] it occurs gpu hang when do one case of vp8 decoding

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=792773

            Bug ID: 792773
           Summary: [gstreamer-vaapi-master][SKL/APL/KBL] it occurs gpu
                    hang when do one case of vp8 decoding
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer-vaapi
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: zhanjunx.wang at intel.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: bsreerenj at gmail.com, vjaquez at igalia.com
     GNOME version: ---

Test Env:
============================================
Platform:               SKL/APL/KBL
Arch:                  x86_64
Kernel:            4.12.0-rc2
libva    94fdf9cb759e3bc29ac952fb63a9cd8348173728 
repo: https://github.com/01org/libva.git

libva-intel    3d5c53dcdc25ea09c6a469c91c2555ad63e2b7a0  
repo: https://github.com/01org/intel-vaapi-driver.git

libva-utils    7b4827ed5e9ed7aef438c321e8d2a27e9ab56a28 
repo: https://github.com/01org/libva-utils.git

gst-vaapi    ce3593c0f6999b6ceb77c16360e61973e2a59945 
repo:  git://anongit.freedesktop.org/gstreamer/gstreamer-vaapi


Reproduce Steps:
============================================
1. build env as above
2. gst-launch-1.0 -f -q filesrc
location=/media/vp8_vpg/vp8_rev0_P_frame_ZeroMV.webm '!' matroskademux '!'
vaapivp8dec '!' vaapipostproc format=i420 '!' checksumsink2
frame-checksum=FALSE file-checksum=TRUE plane-checksum=FALSE
3. run "dmesg |grep hang", find that gpu hang occurs.

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