The upstream 4.14.0 kernel DOES segfault, but none of the 4.13-series kernels does. Some of the 4.13-series kernels do have "error -19" or "error -22" messages in their dmesg output, though.
I've tried the kernel at https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/unstable/+build/13358561, and it ran through the cpu_offlining script five times without error, so I think it's OK.
The upstream 4.14.0 kernel DOES segfault, but none of the 4.13-series kernels does. Some of the 4.13-series kernels do have "error -19" or "error -22" messages in their dmesg output, though.
I've tried the kernel at https:/ /launchpad. net/~canonical- kernel- team/+archive/ ubuntu/ unstable/ +build/ 13358561, and it ran through the cpu_offlining script five times without error, so I think it's OK.