[Bug 214427] New: Amdgpu hangs kernel on boot trying init debugfs

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=214427

            Bug ID: 214427
           Summary: Amdgpu hangs kernel on boot trying init debugfs
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.14.4
          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: inferrna at gmail.com
        Regression: No

Created attachment 298831
  --> https://bugzilla.kernel.org/attachment.cgi?id=298831&action=edit
Screenshot

Early on kernel 5.10 and before it was just
[drm] Initialized amdgpu 3.40.0 20150101 for 0000:05:00.0 on minor 0
[drm:amdgpu_debugfs_init] *ERROR* Failed to init debugfs
[drm:amdgpu_pci_probe] *ERROR* Creating debugfs files failed (-1).

but now it became panic. Kernel patched with
https://github.com/dolohow/uksm/blob/master/v5.x/uksm-5.14.patch - I'm using it
since version 4 without problems.

Panic starts with

RIP: 0010:debugfs_create_file_size+0x2e/0x40

..and see more on the picture

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