[Bug 107586] New: i915 GPU HANG: ecode 9:0:0x85dffffb

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107586

            Bug ID: 107586
           Summary: i915 GPU HANG: ecode 9:0:0x85dffffb
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          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 141129
  --> https://bugs.freedesktop.org/attachment.cgi?id=141129&action=edit
drm crash dump

Hello,

I have video player app that works fine on i3-7100U and Atom z8350. The same
HDD image hangs on i5-7600 in 3 seconds. I tried all kernels 4.12-4.18 but the
same:
[   42.723507] [drm] GPU HANG: ecode 9:0:0x85dffffb, in vplayer [1867], reason:
hang on rcs0, action: reset
[   42.723508] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[   42.723508] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[   42.723508] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[   42.723509] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[   42.723509] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[   42.723515] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[   46.048174] asynchronous wait on fence i915:Xorg[1827]/0:41 timed out

I found that it hangs only if my app trying to download image from iGPU to
system memory via OpenGL Pixel Buffer Object. If I disable PBO and downloading
image without PBO then it works fine.

Best Regards,
Dmitry

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