diff --git a/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc ./sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
index ff5a1c0..da56b9b 100644
--- a/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
+++ ./sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
@@ -139,21 +139,11 @@ namespace sandbox {
 // present (as in newer versions of posix_spawn).
 ResultExpr RestrictCloneToThreadsAndEPERMFork() {
   const Arg<unsigned long> flags(0);
-
-  // TODO(mdempsky): Extend DSL to support (flags & ~mask1) == mask2.
-  const uint64_t kAndroidCloneMask = CLONE_VM | CLONE_FS | CLONE_FILES |
-                                     CLONE_SIGHAND | CLONE_THREAD |
-                                     CLONE_SYSVSEM;
-  const uint64_t kObsoleteAndroidCloneMask = kAndroidCloneMask | CLONE_DETACHED;
-
-  const uint64_t kGlibcPthreadFlags =
-      CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_THREAD |
-      CLONE_SYSVSEM | CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID;
-  const BoolExpr glibc_test = flags == kGlibcPthreadFlags;
-
-  const BoolExpr android_test =
-      AnyOf(flags == kAndroidCloneMask, flags == kObsoleteAndroidCloneMask,
-            flags == kGlibcPthreadFlags);
+  const int required = CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
+                       CLONE_THREAD | CLONE_SYSVSEM;
+  const int safe = CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID |
+                   CLONE_DETACHED;
+  const BoolExpr thread_clone_ok = (flags&~safe)==required;
 
   // The following two flags are the two important flags in any vfork-emulating
   // clone call. EPERM any clone call that contains both of them.
@@ -163,7 +153,7 @@ ResultExpr RestrictCloneToThreadsAndEPERMFork() {
       AnyOf((flags & (CLONE_VM | CLONE_THREAD)) == 0,
             (flags & kImportantCloneVforkFlags) == kImportantCloneVforkFlags);
 
-  return If(IsAndroid() ? android_test : glibc_test, Allow())
+  return If(thread_clone_ok, Allow())
       .ElseIf(is_fork_or_clone_vfork, Error(EPERM))
       .Else(CrashSIGSYSClone());
 }
diff --git a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc ./sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
index d9d1882..0567557 100644
--- a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
+++ ./sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
@@ -392,6 +392,7 @@ bool SyscallSets::IsAllowedProcessStartOrDeath(int sysno) {
 #if defined(__i386__)
     case __NR_waitpid:
 #endif
+    case __NR_set_tid_address:
       return true;
     case __NR_clone:  // Should be parameter-restricted.
     case __NR_setns:  // Privileged.
@@ -404,7 +405,6 @@ bool SyscallSets::IsAllowedProcessStartOrDeath(int sysno) {
 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_set_thread_area:
 #endif
-    case __NR_set_tid_address:
     case __NR_unshare:
 #if !defined(__mips__) && !defined(__aarch64__)
     case __NR_vfork:
@@ -514,6 +514,8 @@ bool SyscallSets::IsAllowedAddressSpaceAccess(int sysno) {
     case __NR_mlock:
     case __NR_munlock:
     case __NR_munmap:
+    case __NR_mremap:
+    case __NR_membarrier:
       return true;
     case __NR_madvise:
     case __NR_mincore:
@@ -531,7 +533,6 @@ bool SyscallSets::IsAllowedAddressSpaceAccess(int sysno) {
     case __NR_modify_ldt:
 #endif
     case __NR_mprotect:
-    case __NR_mremap:
     case __NR_msync:
     case __NR_munlockall:
     case __NR_readahead:
diff --git a/sandbox/linux/system_headers/arm64_linux_syscalls.h ./sandbox/linux/system_headers/arm64_linux_syscalls.h
index 59d0eab..7ae7002 100644
--- a/sandbox/linux/system_headers/arm64_linux_syscalls.h
+++ ./sandbox/linux/system_headers/arm64_linux_syscalls.h
@@ -1063,4 +1063,8 @@
 #define __NR_memfd_create 279
 #endif
 
+#if !defined(__NR_membarrier)
+#define __NR_membarrier 283
+#endif
+
 #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_ARM64_LINUX_SYSCALLS_H_
diff --git a/sandbox/linux/system_headers/arm_linux_syscalls.h ./sandbox/linux/system_headers/arm_linux_syscalls.h
index 1addd53..7843b5e 100644
--- a/sandbox/linux/system_headers/arm_linux_syscalls.h
+++ ./sandbox/linux/system_headers/arm_linux_syscalls.h
@@ -1385,6 +1385,10 @@
 #define __NR_memfd_create (__NR_SYSCALL_BASE+385)
 #endif
 
+#if !defined(__NR_membarrier)
+#define __NR_membarrier (__NR_SYSCALL_BASE+389)
+#endif
+
 // ARM private syscalls.
 #if !defined(__ARM_NR_BASE)
 #define __ARM_NR_BASE (__NR_SYSCALL_BASE + 0xF0000)
diff --git a/sandbox/linux/system_headers/linux_syscalls.h ./sandbox/linux/system_headers/linux_syscalls.h
index 2b78a0c..b6fedb5 100644
--- a/sandbox/linux/system_headers/linux_syscalls.h
+++ ./sandbox/linux/system_headers/linux_syscalls.h
@@ -10,6 +10,7 @@
 #define SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_SYSCALLS_H_
 
 #include "build/build_config.h"
+#include <sys/syscall.h>
 
 #if defined(__x86_64__)
 #include "sandbox/linux/system_headers/x86_64_linux_syscalls.h"
diff --git a/sandbox/linux/system_headers/mips64_linux_syscalls.h ./sandbox/linux/system_headers/mips64_linux_syscalls.h
index ec75815..5515270 100644
--- a/sandbox/linux/system_headers/mips64_linux_syscalls.h
+++ ./sandbox/linux/system_headers/mips64_linux_syscalls.h
@@ -1271,4 +1271,8 @@
 #define __NR_memfd_create (__NR_Linux + 314)
 #endif
 
+#if !defined(__NR_membarrier)
+#define __NR_membarrier (__NR_Linux  318)
+#endif
+
 #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_MIPS64_LINUX_SYSCALLS_H_
diff --git a/sandbox/linux/system_headers/mips_linux_syscalls.h ./sandbox/linux/system_headers/mips_linux_syscalls.h
index ddbf97f..ad3d64b 100644
--- a/sandbox/linux/system_headers/mips_linux_syscalls.h
+++ ./sandbox/linux/system_headers/mips_linux_syscalls.h
@@ -1433,4 +1433,8 @@
 #define __NR_memfd_create (__NR_Linux + 354)
 #endif
 
+#if !defined(__NR_membarrier)
+#define __NR_membarrier (__NR_Linux  358)
+#endif
+
 #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_MIPS_LINUX_SYSCALLS_H_
diff --git a/sandbox/linux/system_headers/x86_64_linux_syscalls.h ./sandbox/linux/system_headers/x86_64_linux_syscalls.h
index b0ae0a2..8b12029 100644
--- a/sandbox/linux/system_headers/x86_64_linux_syscalls.h
+++ ./sandbox/linux/system_headers/x86_64_linux_syscalls.h
@@ -1350,5 +1350,9 @@
 #define __NR_rseq 334
 #endif
 
+#if !defined(__NR_membarrier)
+#define __NR_membarrier 324
+#endif
+
 #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_X86_64_LINUX_SYSCALLS_H_
 
diff --git a/services/service_manager/sandbox/linux/bpf_renderer_policy_linux.cc ./services/service_manager/sandbox/linux/bpf_renderer_policy_linux.cc
index a85c0ea..715aa1e 100644
--- a/sandbox/policy/linux/bpf_renderer_policy_linux.cc
+++ ./sandbox/policy/linux/bpf_renderer_policy_linux.cc
@@ -93,11 +93,11 @@
     case __NR_sysinfo:
     case __NR_times:
     case __NR_uname:
-      return Allow();
-    case __NR_sched_getaffinity:
     case __NR_sched_getparam:
     case __NR_sched_getscheduler:
     case __NR_sched_setscheduler:
+      return Allow();
+    case __NR_sched_getaffinity:
       return RestrictSchedTarget(GetPolicyPid(), sysno);
     case __NR_prlimit64:
       // See crbug.com/662450 and setrlimit comment above.