[Bug 98510] New: Kernel panic (?) when turning off HDMI2 via xrandr after kexec reboot with 4.8.5

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98510

            Bug ID: 98510
           Summary: Kernel panic (?) when turning off HDMI2 via xrandr
                    after kexec reboot with 4.8.5
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: sverd.johnsen at googlemail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Kernel 4.8.5
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
Model name:            Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz


After kexec using xrandr to turn off HDMI2 (DVI output connected via HDMI
cable) causes the kernel to apparently crash.. unfortunately I dont even get
anything in pstore so I dont have more info.

Pretty sure this worked for me in 4.7.x

Screen 0: minimum 8 x 8, current 4480 x 1080, maximum 32767 x 32767
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected primary 2560x1080+1920+0 (normal left inverted right x axis y
axis) 580mm x 240mm
   2560x1080     60.00*+
   1920x1080     60.00    50.00    59.94    30.00    29.97  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm
x 270mm
   1920x1080     60.00*+  50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1400x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

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