CVE-2026-80618 drm/amdkfd: Avoid double-unpin of DOORBELL/MMIO BOs on free

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Avoid double-unpin of DOORBELL/MMIO BOs on free amdgpuamdkfdgpuvmfreememoryofgpu unpinned DOORBELL and MMIO remap BOs which are pinned at allocation time before checking whether the BO is still mapped to the GPU. When...