sysctl_unprivileged_userfaultfd 31 fs/userfaultfd.c int sysctl_unprivileged_userfaultfd __read_mostly = 1; sysctl_unprivileged_userfaultfd 1950 fs/userfaultfd.c if (!sysctl_unprivileged_userfaultfd && !capable(CAP_SYS_PTRACE)) sysctl_unprivileged_userfaultfd 31 include/linux/userfaultfd_k.h extern int sysctl_unprivileged_userfaultfd; sysctl_unprivileged_userfaultfd 1736 kernel/sysctl.c .data = &sysctl_unprivileged_userfaultfd, sysctl_unprivileged_userfaultfd 1737 kernel/sysctl.c .maxlen = sizeof(sysctl_unprivileged_userfaultfd),