[Bug 213333] New: Regression: amdgpu_gfxhub raises protection fault, crashes display

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

https://bugzilla.kernel.org/show_bug.cgi?id=213333

            Bug ID: 213333
           Summary: Regression: amdgpu_gfxhub raises protection fault,
                    crashes display
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.13.0-rc4
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx
          Reporter: unseddd@xxxxxxxxxxxxxx
        Regression: No

Created attachment 297137
  --> https://bugzilla.kernel.org/attachment.cgi?id=297137&action=edit
commit message and fault logs

Change intended to clean up code functionally changes pointer arithmetic, and
causes protection fault when amdgpu_bo_gpu_offset(bo) < adev->gmc.vram_start:
bad commit: 0ca565ab97083, CC: Oak.Zeng@xxxxxxx,
Harish.Kasiviswanathan@xxxxxxx, christian.koenig@xxxxxxx,
alexander.deucher@xxxxxxx

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