[Bug 88096] New: [BDW Bisected]igt/pm_rps/reset crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88096

            Bug ID: 88096
           Summary: [BDW Bisected]igt/pm_rps/reset crash
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 111831
  --> https://bugs.freedesktop.org/attachment.cgi?id=111831&action=edit
dmesg

==System Environment==
--------------------------
Regression: yes

Non-working platforms: BDW

==kernel==
--------------------------
drm-intel-nightly/07d0c831d9207c937595f081c8fddbddbf53756f
commit 07d0c831d9207c937595f081c8fddbddbf53756f
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Tue Dec 30 15:02:01 2014 +0200

    drm-intel-nightly: 2014y-12m-30d-13h-01m-34s UTC integration manifest

==Bug detailed description==
-----------------------------
It's crash on BDW with drm-intel-nightly kernel and drm-intel-next-queued
kernel.
Bisect shows: 27401d126b5b1c8dd4df98bbb60b09ff2b3d5e60 is the first bad commit.
This case also has bug 77869 and 84896.
commit 27401d126b5b1c8dd4df98bbb60b09ff2b3d5e60
Author:     Thomas Daniel <thomas.daniel at intel.com>
AuthorDate: Thu Dec 11 12:48:35 2014 +0000
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Mon Dec 15 11:25:28 2014 +0100

    drm/i915/bdw: Enable execlists by default where supported

    Execlist support in the i915 driver is now considered good enough for the
    feature to be enabled by default on Gen8 and later and routinely tested.
    Adjusted i915 parameters structure initialization to reflect this and
updated
    the comment in intel_sanitize_enable_execlists().

    There's still work to do before we can let the wider massive onto it,
    but there's still time left before the 3.20 cutoff.

    v2: Update the MODULE_PARM_DESC too.

output:
IGT-Version: 1.9-gcb512b6 (x86_64) (Linux:
3.19.0-rc2_drm-intel-nightly_07d0c8_20150105+ x86_64)
Test assertion failure function intel_batchbuffer_flush_on_ring, file
intel_batchbuffer.c:180:
Failed assertion: (drm_intel_gem_bo_context_exec(batch->bo, ctx, used, ring))
== 0
Last errno: 16, Device or resource busy
Subtest reset: FAIL (84.113s)
Test assertion failure function loaded_check, file pm_rps.c:509:
Failed assertion: freqs[CUR] == freqs[MAX]
error: 450 != 900
Subtest reset: FAIL (87.116s)
Test assertion failure function load_helper_stop, file pm_rps.c:290:
Failed assertion: igt_wait_helper(&lh.igt_proc) == 0
Last errno: 10, No child processes
pm_rps: igt_core.c:870: igt_fail: Assertion `!test_with_subtests || in_fixture'
failed.
Aborted (core dumped)


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

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