reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip.git/commit/?id=5fa6f02b9ffaaf475cb48b2a6d3e31bfd2ba4735
        git remote add cip https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip.git
        git fetch --no-tags cip linux-6.1.y-cip-rt-rebase
        git checkout 5fa6f02b9ffaaf475cb48b2a6d3e31bfd2ba4735
        # 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_IOMMU_IO_PGTABLE_LPAE --selectors CONFIG_IPMMU_VMSA -a=riscv
        # 2. reproduce by make
           cd linux
           # download the config file from the "config:" link in the report, and save it as .config
           make ARCH=riscv olddefconfig