--- a/ntpd/ntp_sandbox.c	
+++ a/ntpd/ntp_sandbox.c	
@@ -463,6 +463,15 @@ int scmp_sc[] = {
        SCMP_SYS(send),
        SCMP_SYS(stat64),
 #endif
+#if defined(__arm__)
+       SCMP_SYS(statx),
+#endif
+#if defined(__riscv32__)
+       SCMP_SYS(faccessat),
+#endif
+#if defined(__aarch64__)
+       SCMP_SYS(syscall);
+#endif
 };
        {
                for (unsigned int i = 0; i < COUNTOF(scmp_sc); i++) {