[Bug 90045] New: [BDW/BSW/SKL]igt/gem_exec_big fails and causes [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer elapsed... render ring idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90045

            Bug ID: 90045
           Summary: [BDW/BSW/SKL]igt/gem_exec_big fails and causes
                    [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck
                    timer elapsed... render ring idle
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         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 115105
  --> https://bugs.freedesktop.org/attachment.cgi?id=115105&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure, disable in earlier testing.

Non-working platforms: BDW/BSW/SKL

==kernel==
--------------------------
drm-intel-nightly/5ea91de4ff45adb60031853d64314c3405378fbd
commit 5ea91de4ff45adb60031853d64314c3405378fbd
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Tue Apr 14 20:00:06 2015 +0200

    drm-intel-nightly: 2015y-04m-14d-17h-59m-22s UTC integration manifest

==Bug detailed description==
-----------------------------
It fails on BDW/BSW/SKL and causes <3>[   69.740955]
[drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer elapsed... render
ring idle.

output:
IGT-Version: 1.10-gbeddb3b (x86_64) (Linux:
4.0.0_drm-intel-nightly_5ea91d_20150415+ x86_64)
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [gem_create+0x68]
  #2 [main+0x85]
  #3 [__libc_start_main+0xf5]
  #4 [_start+0x29]
  #5 [<unknown>+0x29]
FAIL (37.919s)

==Reproduce steps==
---------------------------- 
1. ./gem_exec_big

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