https://bugs.freedesktop.org/show_bug.cgi?id=111968

            Bug ID: 111968
           Summary: Navi10 null pointer dereference in kernel 5.4 while
                    running Vulkan CTS
           Product: DRI
           Version: DRI git
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: not set
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: venemo@msn.com

Created attachment 145698
  --> https://bugs.freedesktop.org/attachment.cgi?id=145698&action=edit
dmesg log with kernel 5.4-rc2 that shows the null pointer dereference

While running the Vulkan CTS, I encountered the following:

Running the cases dEQP-VK.memory.allocation.* will trigger a kernel NULL
pointer dereference in amdgpu on 5.4-rc2, see the attached dmesg log. After
this happens, the GPU can hang too, but doesn't always hang.

Hardware:
AMD Radeon RX 5700XT (reference card, made by Sapphire)
Dell U2718Q (two of them: one through HDMI, other through DisplayPort)
AMD Ryzen 7 3700X
MSI B450i

Software:
Fedora Workstation 31 x86_64
LLVM 9
Mesa master (what will be 19.3)

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