[Bug 63945] New: [HSW] When VGA plugged, system booting up with call trace in dmesg

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=63945

          Priority: medium
            Bug ID: 63945
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW] When VGA plugged, system booting up with call
                    trace in dmesg
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: yangweix.shui at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 78501
  --> https://bugs.freedesktop.org/attachment.cgi?id=78501&action=edit
dmesg : if VGA plugged, system boot up call trace

Reproduce step:
---------------------
1. plugged in VGA
2. system boot up
3. dmesg | grep -i "call trace"

Description:
--------------------
I find this issue on -next-queued branch:
good commit: 949db153b6466c6f7cad5a427ecea94985927311(Linux 3.8-rc5)
bad commit: 80ad9206c0d863832bc5f6008c4d1868d1df8e70

I append the dmesg of bad commit, because our machine is not stable, bisect is
on the way, If something you find is needed, please let me know.

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