[Bug 62791] New: [ILK regression] Change from X-window to text terminal causes Call Trace

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=62791

          Priority: medium
            Bug ID: 62791
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [ILK regression] Change from X-window to text terminal
                    causes Call Trace
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: cancan.feng at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 77084
  --> https://bugs.freedesktop.org/attachment.cgi?id=77084&action=edit
dmesg

Environment:
--------------------
The Linux Kernel, the operating system core itself
Kernel: (drm-intel-next-queued)e3dff585508636c8d2915cc1595e04f16ccd66ba
Some additional commit info:
Author: Ben Widawsky <ben at bwidawsk.net>
Date:   Wed Mar 20 14:49:14 2013 -0700

    drm/i915: Implement WaSwitchSolVfFArbitrationPriority

Bug Details:
---------------------
Call Trace appears while doing chvt on Ironlake. After booting system, start X,
then change to text terminal with chvt, Call Trace will be found. This issue
only happens after starting X. I attached dmesg log which you can find in the
attachment.

Reproduce steps:
---------------------
1.boot or reboot
2.xinit &
3.chvt 1 --> Call Trace

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