--- a/src/java.base/share/classes/sun/nio/ch/ServerSocketChannelImpl.java	Fri Mar 23 09:51:02 2018 +0100
+++ b/src/java.base/share/classes/sun/nio/ch/ServerSocketChannelImpl.java	Fri Mar 23 14:18:18 2018 +0000
@@ -210,25 +210,20 @@
 
     @Override
     public ServerSocketChannel bind(SocketAddress local, int backlog) throws IOException {
-        acceptLock.lock();
-        try {
-            synchronized (stateLock) {
-                ensureOpen();
-                if (localAddress != null)
-                    throw new AlreadyBoundException();
-                InetSocketAddress isa = (local == null)
-                                        ? new InetSocketAddress(0)
-                                        : Net.checkAddress(local);
-                SecurityManager sm = System.getSecurityManager();
-                if (sm != null)
-                    sm.checkListen(isa.getPort());
-                NetHooks.beforeTcpBind(fd, isa.getAddress(), isa.getPort());
-                Net.bind(fd, isa.getAddress(), isa.getPort());
-                Net.listen(fd, backlog < 1 ? 50 : backlog);
-                localAddress = Net.localAddress(fd);
-            }
-        } finally {
-            acceptLock.unlock();
+        synchronized (stateLock) {
+            ensureOpen();
+            if (localAddress != null)
+                throw new AlreadyBoundException();
+            InetSocketAddress isa = (local == null)
+                                    ? new InetSocketAddress(0)
+                                    : Net.checkAddress(local);
+            SecurityManager sm = System.getSecurityManager();
+            if (sm != null)
+                sm.checkListen(isa.getPort());
+            NetHooks.beforeTcpBind(fd, isa.getAddress(), isa.getPort());
+            Net.bind(fd, isa.getAddress(), isa.getPort());
+            Net.listen(fd, backlog < 1 ? 50 : backlog);
+            localAddress = Net.localAddress(fd);
         }
         return this;
     }