[Bug 81858] [BYT/BSW Regression]igt/pm_rps some subcases fail and cause " [drm:i915_context_is_banned] *ERROR* gpu hanging too fast, banning!"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81858

--- Comment #2 from Guo Jinxian <jinxianx.guo at intel.com> ---
Created attachment 105721
  --> https://bugs.freedesktop.org/attachment.cgi?id=105721&action=edit
dmesg

Test failed on BDW too.

root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rps
--run-subtest blocking
IGT-Version: 1.7-gf473a55 (x86_64) (Linux:
3.17.0-rc2_drm-intel-nightly_4144c9_20140904+ x86_64)
Test assertion failure function emit_store_dword_imm, file pm_rps.c:193:
Failed assertion: batch->ptr == batch->end
Subtest blocking: FAIL
Test assertion failure function load_helper_stop, file pm_rps.c:254:
Failed assertion: igt_wait_helper(&lh.igt_proc) == 0
Subtest blocking: FAIL

root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time ./pm_rps
--run-subtest reset
IGT-Version: 1.7-gf473a55 (x86_64) (Linux:
3.17.0-rc2_drm-intel-nightly_4144c9_20140904+ x86_64)
Test assertion failure function emit_store_dword_imm, file pm_rps.c:193:
Failed assertion: batch->ptr == batch->end
Subtest reset: FAIL

^CTest assertion failure function load_helper_stop, file pm_rps.c:254:
Failed assertion: igt_wait_helper(&lh.igt_proc) == 0
Last errno: 10, No child processes
Subtest reset: FAIL
pm_rps: igt_core.c:891: fork_helper_exit_handler: Assertion
`helper_process_count == 0' failed.
Aborted

real    17m39.073s
user    0m0.015s
sys     0m0.039s
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm

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