[Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109808

            Bug ID: 109808
           Summary: ROCm OpenCL segfaults on drm-next-5.1-wip
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: bmilreu at gmail.com

rocm clinfo segfaults with this on dmesg:

mar 01 15:27:36 mjb kernel: kfd2kgd: init_user_pages: Failed to register MMU
notifier: -19


Reverting: 
        drm/amdgpu: use HMM callback to replace mmu notifier
        drm/amdgpu: replace get_user_pages with HMM mirror helpers
        drm/amdkfd: avoid HMM change cause circular lock
        drm/amdgpu: use HMM callback to replace mmu notifier

makes it work again, something might be wrong with those related commits.

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