[Bug 104891] New: [CFL] GPU hang during VA-API H.264 encoding

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104891

            Bug ID: 104891
           Summary: [CFL] GPU hang during VA-API H.264 encoding
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: sgunderson at bigfoot.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 137096
  --> https://bugs.freedesktop.org/attachment.cgi?id=137096&action=edit
/sys/class/drm/card1/error from after a hang

Hi,

I'm trying a brand new Coffee Lake (i5-8400). The primary GPU is an NVIDIA
card; the Intel GPU is used for VA-API only. I can post frames for encoding
just fine (I have my own VA-API application), but they seemingly never come
back, and the kernel complains:

[  621.837356] [drm] GPU HANG: ecode 9:0:0x8fd8ffff, reason: Hang on rcs0,
action: reset
[  621.837356] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  621.837357] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  621.837357] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  621.837357] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  621.837357] [drm] GPU crash dump saved to /sys/class/drm/card1/error
[  621.837361] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[  629.861470] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[  637.861515] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[  645.861528] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[  653.861539] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[  655.845499] i915 0000:00:02.0: Resetting vcs0 after gpu hang

This is 4.15.0-rc8. Hang dump attached.

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