Seems that kernels in http://kernel.ubuntu.com/~kernel-ppa/mainline/ are not fixed yet. I recompiled the kernel by myself with CONFIG_HARDENED_USERCOPY_PAGESPAN disabled and it works now. Some details are in this thread: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1633172
Seems that kernels in http:// kernel. ubuntu. com/~kernel- ppa/mainline/ are not fixed yet. I recompiled the kernel by myself with CONFIG_ HARDENED_ USERCOPY_ PAGESPAN disabled and it works now. Some details are in this thread: https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1633172