setup_userns_sysctls 101 include/linux/user_namespace.h bool setup_userns_sysctls(struct user_namespace *ns); setup_userns_sysctls 235 kernel/ucount.c BUG_ON(!setup_userns_sysctls(&init_user_ns)); setup_userns_sysctls 136 kernel/user_namespace.c if (!setup_userns_sysctls(ns))