[Bug 81858] New: [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

          Priority: high
            Bug ID: 81858
          Keywords: bisect_pending
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BSW Regression]igt/pm_rps some subcases fail and
                    cause " [drm:i915_context_is_banned] *ERROR* gpu
                    hanging too fast, banning!"
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 103621
  --> https://bugs.freedesktop.org/attachment.cgi?id=103621&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. 
Good commit on -next-queued: 91565c85b66db820f01894a971d39aaef60c4325(here has
another bug 80704)

Non-working platforms: BSW

==kernel==
--------------------------
origin/drm-intel-nightly: e967a525207bd40ab446e2f809907039f88e66f3(fails)
    drm-intel-nightly: 2014y-07m-25d-23h-02m-06s integration manifest
origin/drm-intel-next-queued: eff9b57c1a91ccf309d57500ab6a365ba7be5712(fails)
    drm/i915: Update DRIVER_DATE to 20140725
origin/drm-intel-fixes: f4be89cecea437aaddd7700d05c6bdb5678041f7(here has
another bug 80704)
    drm/i915: Fix crash when failing to parse MIPI VBT

==Bug detailed description==
igt/pm_rps subcases  min-max-config-loaded and reset fail and cause "
[drm:i915_context_is_banned] *ERROR* gpu hanging too fast, banning!"

Output:
[root at x-bsw01 tests]# ./pm_rps --run-subtest reset
IGT-Version: 1.7-ge48c495 (x86_64) (Linux:
3.16.0-rc4_drm-intel-next-queued_eff9b5_20140728+ x86_64)

Test assertion failure function intel_batchbuffer_flush_on_ring, file
intel_batchbuffer.c:172:
Failed assertion: (drm_intel_bo_mrb_exec(batch->bo, used, ((void *)0), 0, 0,
ring)) == 0
Last errno: 5, Input/output error
Subtest reset: FAIL
Test assertion failure function matchit, file pm_rps.c:128:
Failed assertion: freqs1[CUR] == freqs2[CUR]
error: 160 == 320
Subtest reset: FAIL
Test assertion failure function load_helper_stop, file pm_rps.c:258:
Failed assertion: igt_wait_helper(&lh.igt_proc) == 0
Last errno: 10, No child processes
pm_rps: igt_core.c:714: igt_fail: Assertion `!test_with_subtests || in_fixture'
failed.
Aborted (core dumped)
[root at x-bsw01 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm
<3>[  126.760022] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast,
banning!


==Reproduce steps==
---------------------------- 
1. ./pm_rps --run-subtest reset

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