https://bugs.freedesktop.org/show_bug.cgi?id=107595

            Bug ID: 107595
           Summary: amd-staging-drm-next: BUG: unable to handle kernel
                    NULL pointer dereference at 0000000000000018 - R4
                    Mullins
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: soprwa@gmail.com

Created attachment 141148
  --> https://bugs.freedesktop.org/attachment.cgi?id=141148&action=edit
oops kernel message

Booting latest amd-staging-drm-next is causing kernel OOPS.

Hardware is Lenovo netbook G50-45 A6 6310 APU with R4 Mullins. Kernel booted
with "amdgpu.dc=1" and "amdgpu.dpm=1". 

Blank eDP screen can be caused by another bug:
https://bugs.freedesktop.org/show_bug.cgi?id=106940, but three is no picture on
connected HDMI monitor also (opposite to the situation in mentioned bug
report).

Panic message, that I've got from pstore, attached.

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