[Bug 101522] New: GPU HANG: ecode 8:2:0xbffffffe, in ffmpeg [1311], reason: Hang on vcs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101522

            Bug ID: 101522
           Summary: GPU HANG: ecode 8:2:0xbffffffe, in ffmpeg [1311],
                    reason: Hang on vcs
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: ddv2005 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 132091
  --> https://bugs.freedesktop.org/attachment.cgi?id=132091&action=edit
/sys/class/drm/card0/error

Hello,

I have embedded system on Intel Atom Z8350 that run Ubuntu 16.04 with X11
server + ffmpeg H264 transcoder + mpv h264 video stream player + ffvademo to
show web camera H264 stream. Every hour it have an error:
[drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe C
(start=3143204 end=3143205) time 916 us, min 1073, max 1079, scanline start
1054, end 1116
But then after about 24-48h it hangs on GPU:
[58796.141184] [drm] GPU HANG: ecode 8:2:0xbffffffe, in ffmpeg [1311], reason:
Hang on vcs, action: reset
[58796.141188] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[58796.141190] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[58796.141191] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[58796.141192] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[58796.141194] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[58796.141380] drm/i915: Resetting chip after gpu hang
[58796.845062] [drm:gen8_reset_engines [i915]] *ERROR* vcs: reset request
timeout
[58796.845208] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -5
[58798.396642] asynchronous wait on fence i915:[global]:ad2acf timed out
[70725.643729] retire_capture_urb: 3 callbacks suppressed

Kernel:
Linux vg3 4.12.0-041200rc5-lowlatency #201706112031 SMP PREEMPT Mon Jun 12
00:38:08 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

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