[Bug 82749] New: [PNV Regression]igt/gem_wait_render_timeout fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82749

          Priority: high
            Bug ID: 82749
          Keywords: bisect_pending
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [PNV Regression]igt/gem_wait_render_timeout fails
        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 104799
  --> https://bugs.freedesktop.org/attachment.cgi?id=104799&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes.
Good commit on drm-fixes:1b2c4869d8247f9e202fa8a73777c34adc62d409

Non-working platforms: PNV

==kernel==
--------------------------
origin/drm-intel-nightly: 186631131a9289dad22f51315d78b9b6ac5b425f(fails)
    drm-intel-nightly: 2014y-08m-15d-14h-55m-27s integration manifest
origin/drm-intel-next-queued: ecca3fd0ea82c45b558f68b1ff3bf6685b443ab1(works)
    drm/i915/bdw: Enable Logical Ring Contexts (hence, Execlists)
origin/drm-intel-fixes: 103ae732ad26141515f109c80b5c1ced16e457c3(works)
    drm/i915: Don't try to enable cursor from setplane when crtc is disabled
origin/drm-fixes: 251964845fbf539781dd2c6406cb2ba1bf9eddd0(fails)
    drm/doc: Refer to proper source file
origin/drm-next: 7963e9db1b1f842fdc53309baa8714d38e9f5681(works)
    Revert "drm: drop redundant drm_file->is_master"

==Bug detailed description==
-----------------------------
igt/gem_wait_render_timeout fails

Output:
[root at x-pnv2 tests]# ./gem_wait_render_timeout
IGT-Version: 1.7-g1bec6cb (i686) (Linux:
3.16.0_drm-intel-nightly_186631_20140818+ i686)
2048 iters is enough work
Finished with 220742365 time remaining
Test assertion failure function __real_main130, file
gem_wait_render_timeout.c:223:
Failed assertion: timeout == 0
Last errno: 62, Timer expired
[root at x-pnv2 tests]# echo $?
99


Reproduce steps:
-------------------------
1. ./gem_wait_render_timeout

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