reproduce:
        # https://github.com/AsahiLinux/linux/commit/8948cde0ab313f22defe24fc60186333bd04bea3
        git remote add asahilinux https://github.com/AsahiLinux/linux
        git fetch --no-tags asahilinux bits/020-dart
        git checkout 8948cde0ab313f22defe24fc60186333bd04bea3
        # choose either of the following two methods to reproduce the issue
        # 1. reproduce by kismet
           # install kmax per https://github.com/paulgazz/kmax/blob/master/README.md
           kismet --linux-ksrc=linux --selectees CONFIG_OF_IOMMU --selectors CONFIG_APPLE_DART -a=alpha
        # 2. reproduce by make
           cd linux
           # download the config file from the "config:" link in the report, and save it as .config
           make ARCH=alpha olddefconfig