[BUG] Warning and NULL-ptr dereference in amdgpu driver with 5.18

[Jörg Rödel]

On Fri, May 06, 2022 at 08:30:13AM +0200, Jörg Rödel wrote:
> [81829.087101] ------------[ cut here ]------------
> [81829.087105] WARNING: CPU: 4 PID: 644 at drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dce110/dce110_clk_mgr.c:140 dce110_fill_display_configs+0x4a/0x150 [amdgpu]

Same just happened with a kernel built from latest upstream, based on
commit fe27d189e3f42e31d3c8223d5daed7285e334c5e. So it's at least not
the iommu changes causing it :)

Please let me know if I can be of any help debugging this further.

Thanks,

	Joerg