[Bug 72982] New: [IVB/HSW Regression]igt/kms_flip/flip-vs-panning-vs-hang-interruptible fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72982

          Priority: high
            Bug ID: 72982
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB/HSW
                    Regression]igt/kms_flip/flip-vs-panning-vs-hang-interr
                    uptible 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 91145
  --> https://bugs.freedesktop.org/attachment.cgi?id=91145&action=edit
dmesg

System Environment:
--------------------------
Platform:  Ivybridge/Haswell
Kernel: (drm-intel-nightly)e9c4f42a6d0cf76b90b88954e2463bf1335faf6e

Bug detailed description:
-----------------------------
It fails on Ivybridge and Haswell with ppgtt branch and nightly branch.
igt/kms_flip/flip-vs-modeset-vs-hang-interruptible also fails.

The latest known good commit:f7698ba75fa283435f5077b9dfb4319d28b9de9a
The latest known bad commit:a7c1d426ef335ccfb6bd567a3f616fa232418fa2

output:
IGT-Version: 1.5-g4f28614 (x86_64) (Linux:
3.13.0-rc4_drm-intel-nightly_e9c4f4_20131223+ x86_64)
Using monotonic timestamps
Beginning flip-vs-panning-vs-hang-interruptible on crtc 3, connector 9
  1680x1050 60 1680 1784 1960 2240 1050 1053 1059 1089 0x5 0x48 146250
...Test assertion failure function exec_nop, file kms_flip.c:648:
Last errno: 5, Input/output error
Failed assertion: drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf) == 0
Subtest flip-vs-panning-vs-hang-interruptible: FAIL

Reproduce steps:
----------------------------
1. ./kms_flip --run-subtest flip-vs-panning-vs-hang-interruptible

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