[Bug 101642] [KBL] igt at gem_ctx_switch@ blt-interruptible GuC 9.14 triggers GEM_BUG_ON(!i915_gem_request_completed(request));

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101642

--- Comment #8 from John Spotswood <john.a.spotswood at intel.com> ---
So far, I have been unable to reproduce this issue.  I have executed the test
as specified in the initial comment:

   while ./gem_ctx_switch --r blt-interruptible ; do date ; done

The loop has been running for over 24 hours, and I have not seen a failure.  I
am running on a KBL system; however, the device differs slightly:

   00:02.0 8086:5917 (rev 07)

I am running with the 9.14 version of the Guc FW and the latest kernel version
from drm-intel-next-queued.  It's unclear from this entry what kernel version
exhibited the failure, but I could try a version based on the date of when this
issue was submitted.

I am also seeing the dmesg error:

   [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to capture logs

I need to investigate that further.

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