diff --git a/compiler-rt/lib/asan/asan_posix.cc b/compiler-rt/lib/asan/asan_posix.cc
--- a/compiler-rt/lib/asan/asan_posix.cc
+++ b/compiler-rt/lib/asan/asan_posix.cc
@@ -39,7 +39,7 @@
 
 // ---------------------- TSD ---------------- {{{1
 
-#if SANITIZER_NETBSD || SANITIZER_FREEBSD
+#if SANITIZER_NETBSD
 // Thread Static Data cannot be used in early init on NetBSD and FreeBSD.
 // Reuse the Asan TSD API for compatibility with existing code
 // with an alternative implementation.
diff --git a/compiler-rt/lib/msan/msan_linux.cc b/compiler-rt/lib/msan/msan_linux.cc
--- a/compiler-rt/lib/msan/msan_linux.cc
+++ b/compiler-rt/lib/msan/msan_linux.cc
@@ -174,7 +174,7 @@
 
 // ---------------------- TSD ---------------- {{{1
 
-#if SANITIZER_NETBSD || SANITIZER_FREEBSD
+#if SANITIZER_NETBSD
 // Thread Static Data cannot be used in early init on NetBSD and FreeBSD.
 // Reuse the MSan TSD API for compatibility with existing code
 // with an alternative implementation.
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
@@ -777,9 +777,17 @@
 }
 
 #if SANITIZER_FREEBSD
+typedef int (*syctlbyname_ptr)(const char *sname, void *oldp, size_t *oldlenp,
+                          const void *newp, size_t newlen);
 int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
                           const void *newp, uptr newlen) {
-  return sysctlbyname(sname, oldp, (size_t *)oldlenp, newp, (size_t)newlen);
+  static syctlbyname_ptr real_sysctlbyname = nullptr;
+  if (!real_sysctlbyname)
+    real_sysctlbyname = (syctlbyname_ptr)dlfunc(RTLD_NEXT, "sysctlbyname");
+  if (!real_sysctlbyname)
+    real_sysctlbyname = (syctlbyname_ptr)dlfunc(RTLD_DEFAULT, "sysctlbyname");
+  CHECK(real_sysctlbyname);
+  return real_sysctlbyname(sname, oldp, (size_t *)oldlenp, newp, (size_t)newlen);
 }
 #endif
 #endif