Hello, syzbot found the following issue on: HEAD commit: 9abf2313adc1 Linux 6.1-rc1 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=152b6b6a880000 kernel config: https://syzkaller.appspot.com/x/.config?x=9631ed0b9757aaab dashboard link: https://syzkaller.appspot.com/bug?extid=9d8dc6c2d48bbc419bb4 compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: riscv64 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9d8dc6c2d48bbc419bb4@xxxxxxxxxxxxxxxxxxxxxxxxx arch/riscv/kvm/vcpu.c:269: undefined reference to `riscv_cbom_block_size' riscv64-linux-gnu-ld: arch/riscv/kvm/vcpu.c:269: undefined reference to `riscv_cbom_block_size' --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.