Svacer reports possible dereference of a NULL-pointer in amd_iommu_probe_finalize(). The problem is present in 5.10 stable release and can be fixed by the following upstream patch. In order to apply this patch, the incoming changes had to be manually accepted. This action was necessary due to some differences in the code of amd_iommu_probe_finalize() of the upstream version and 5.10 version of the kernel.
