I have the exact same issue with you. I'm using a laptop with 7840hs. I encountered this warning after upgrading the kerne to 6.11.10.Maybe some back-port patches break something, I think there is no warning when I got into kernel 6.11.0.
And the warning also exists in 6.13-rc1.Maybe you can post this issue to https://gitlab.freedesktop.org/drm/amd/-/issues
AMD employees are working there to address amdgpu driver issue.
