[Bug 73653] New: [SNB/IVB/HSW/BYT ppgtt Regression]igt/gem_reset_stats/ban fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73653

          Priority: high
            Bug ID: 73653
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [SNB/IVB/HSW/BYT ppgtt
                    Regression]igt/gem_reset_stats/ban 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 92118
  --> https://bugs.freedesktop.org/attachment.cgi?id=92118&action=edit
dmesg

ystem Environment:
--------------------------
Platform: SNB/IVB/HSW/BYT
kernel:   (drm-intel-nightly)07db3e0b8568d81226e2e17dbb1b340668cb2287

Bug detailed description:
-------------------------
It fails on SNB/IVB/HSW/BYT with -nightly and -ppgtt kernel.It works well on
-fixes and -queued kernel.

The latest known good commit:f7698ba75fa283435f5077b9dfb4319d28b9de9a
The latest known bad commit: e91030380282240477864bf9d721b8c966acb6d9

output:
IGT-Version: 1.5-g1552aa2 (x86_64) (Linux:
3.13.0-rc7_drm-intel-nightly_07db3e_20140115+ x86_64)
4:1 reset status 1 differs from assumed 2
Test assertion failure function test_ban, file gem_reset_stats.c:528:
Last errno: 5, Input/output error
Failed assertion: _assert_reset_status(fd, ctx_good, (1 << 1)) == 0
Subtest ban: FAIL

Reproduce steps:
----------------------------
1. ./gem_reset_stats --run-subtest ban

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