[Bug 208909] New: amdgpu Ryzen 7 4700U NULL pointer dereference multi monitor with rotation

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=208909

            Bug ID: 208909
           Summary: amdgpu Ryzen 7 4700U NULL pointer dereference multi
                    monitor with rotation
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.8.0-050800-generic
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: kernel at 890.at
        Regression: No

Created attachment 290909
  --> https://bugzilla.kernel.org/attachment.cgi?id=290909&action=edit
dmesg output

Hi,

I have a lenovo E15 gen2 laptop running, with a Ryzen 7 4700U renoir Vega 7, on
a 5.8 ubuntu mainline kernel including the latest firmware files (git).

System seems stable so far when running 2 monitors (internal display, and
external display on DP).

When adding a third monitor on the HDMI output and rotating this monitor, the
system crashes with a null pointer dereference.


any help would be appreciated

cheers

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