Automated rollback of changelist 301501607

PiperOrigin-RevId: 301578043

pkg/rand/rand_linux.go

@@ -45,18 +45,12 @@ func (r *reader) Read(p []byte) (int, error) {
 	return rand.Read(p)
 }
 
-// mu protects the global Reader below.
-var mu sync.Mutex
-
 // Reader is the default reader.
 var Reader io.Reader = &reader{}
 
 // Read reads from the default reader.
 func Read(b []byte) (int, error) {
-	mu.Lock()
-	n, err := io.ReadFull(Reader, b)
-	mu.Unlock()
-	return n, err
+	return io.ReadFull(Reader, b)
 }
 
 // Init can be called to make sure /dev/urandom is pre-opened on kernels that