diff --git a/[refs] b/[refs]
index 16db13d82e84..9b38c2dadc05 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 576a488a27f267af203f3ea69c700a1612335e9f
+refs/heads/master: 1cb434b20d85b90f2e5cf6cb80071069a052b1e1
diff --git a/trunk/MAINTAINERS b/trunk/MAINTAINERS
index 8f2b67ea0549..24741de12a39 100644
--- a/trunk/MAINTAINERS
+++ b/trunk/MAINTAINERS
@@ -3759,6 +3759,15 @@ M:	drzeus-sdhci@drzeus.cx
 L:	sdhci-devel@list.drzeus.cx
 S:	Maintained
 
+SECURITY SUBSYSTEM
+F:	security/
+P:	James Morris
+M:	jmorris@namei.org
+L:	linux-kernel@vger.kernel.org
+L:	linux-security-module@vger.kernel.org (suggested Cc:)
+T:	git kernel.org:pub/scm/linux/kernel/git/jmorris/security-testing-2.6.git
+S:	Supported
+
 SECURITY CONTACT
 P:	Security Officers
 M:	security@kernel.org
diff --git a/trunk/arch/mn10300/kernel/gdb-io-serial.c b/trunk/arch/mn10300/kernel/gdb-io-serial.c
index 9a6d4e8ebe73..11584c51acd9 100644
--- a/trunk/arch/mn10300/kernel/gdb-io-serial.c
+++ b/trunk/arch/mn10300/kernel/gdb-io-serial.c
@@ -99,6 +99,7 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
  try_again:
 	/* pull chars out of the buffer */
 	ix = gdbstub_rx_outp;
+	barrier();
 	if (ix == gdbstub_rx_inp) {
 		if (nonblock)
 			return -EAGAIN;
@@ -110,6 +111,7 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
 
 	ch = gdbstub_rx_buffer[ix++];
 	st = gdbstub_rx_buffer[ix++];
+	barrier();
 	gdbstub_rx_outp = ix & 0x00000fff;
 
 	if (st & UART_LSR_BI) {