Index: sys/compat/linux/linux_misc.c
===================================================================
--- sys/compat/linux/linux_misc.c
+++ sys/compat/linux/linux_misc.c
@@ -1982,7 +1982,7 @@
 int
 linux_prctl(struct thread *td, struct linux_prctl_args *args)
 {
-	int error = 0, max_size;
+	int error = 0, max_size, arg;
 	struct proc *p = td->td_proc;
 	char comm[LINUX_MAX_COMM_LEN];
 	int pdeath_signal, trace_state;
@@ -2113,8 +2113,10 @@
 		error = EINVAL;
 		break;
 	case LINUX_PR_SET_NO_NEW_PRIVS:
-		linux_msg(td, "unsupported prctl PR_SET_NO_NEW_PRIVS");
-		error = EINVAL;
+		arg = args->arg2 == 1 ?
+		    PROC_NO_NEW_PRIVS_ENABLE : PROC_NO_NEW_PRIVS_DISABLE;
+		error = kern_procctl(td, P_PID, p->p_pid,
+		    PROC_NO_NEW_PRIVS_CTL, &arg);
 		break;
 	case LINUX_PR_SET_PTRACER:
 		linux_msg(td, "unsupported prctl PR_SET_PTRACER");