this optimisation of CLONE_SETTLS is not valid used like this, and musl
clone(3) will EINVAL on this use
--
diff --git a/sandbox/linux/services/credentials.cc b/sandbox/linux/services/credentials.cc
index 7f925cc..993a9ee 100644
--- a/sandbox/linux/services/credentials.cc
+++ b/sandbox/linux/services/credentials.cc
@@ -104,7 +104,7 @@ bool ChrootToSafeEmptyDir() {
   // glibc performs syscalls by calling a function pointer in TLS, so we do not
   // attempt this optimization.
   // TODO(crbug.com/40196869) Broken in MSan builds after LLVM f1bb30a4956f.
-  clone_flags |= CLONE_VM | CLONE_VFORK | CLONE_SETTLS;
+  clone_flags |= CLONE_VM | CLONE_VFORK;
 
   char tls_buf[PTHREAD_STACK_MIN_CONST] = {};
   tls = tls_buf;
