[Bug 69834] New: [SNB/IVB/HSW Regression]igt/gem_suspend fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69834

          Priority: high
            Bug ID: 69834
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [SNB/IVB/HSW Regression]igt/gem_suspend fails
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 86614
  --> https://bugs.freedesktop.org/attachment.cgi?id=86614&action=edit
dmesg

System Environment:
--------------------------
Platform:  Sandybridge/Ivybridge/Haswell
Kernel: (drm-intel-nightly)532fcf286aa6feba529587d0288a0097ba8b713e

Bug detailed description:
-----------------------------
It fails on Sandybridge/Ivybridge/Haswell with -nightly and -fixes kernel. It
works well on -fixes kernel.
subcase fence-restore-tiled2untiled and fence-restore-untiled fail.

The latest know good commit:1b068ee25776533074251f1c6276c5f720c0284b
The latest know bad commit: 13992eba94ab34220e8e754c5cd6beb89c96bd73

run ./gem_suspend --run-subtest fence-restore-tiled2untiled
output:
rtcwake: wakeup from "mem" using /dev/rtc0 at Thu Sep 26 13:33:29 2013
checking the first canary object
Test assertion failure function test_fence_restore, file gem_suspend.c:83:
Failed assertion: ptr1[i] == i
Subtest fence-restore-tiled2untiled: FAIL

Reproduce steps:
----------------------------
1. ./gem_suspend --run-subtest fence-restore-tiled2untiled

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