--- a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
+++ a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
@@ -370,6 +370,7 @@
   switch (sysno) {
     case __NR_exit:
     case __NR_exit_group:
+    case __NR_membarrier:
     case __NR_wait4:
     case __NR_waitid:
 #if defined(__i386__)
