[PATCH] net: kmemcheck annotation in struct socket

struct socket has a 16 bit hole that triggers kmemcheck warnings.

As suggested by Ingo, use kmemcheck annotations

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/net.h

@@ -57,6 +57,7 @@ typedef enum {
 #include <linux/random.h>
 #include <linux/wait.h>
 #include <linux/fcntl.h>	/* For O_CLOEXEC and O_NONBLOCK */
+#include <linux/kmemcheck.h>
 
 struct poll_table_struct;
 struct pipe_inode_info;
@@ -127,7 +128,11 @@ enum sock_shutdown_cmd {
  */
 struct socket {
 	socket_state		state;
+
+	kmemcheck_bitfield_begin(type);
 	short			type;
+	kmemcheck_bitfield_end(type);
+
 	unsigned long		flags;
 	/*
 	 * Please keep fasync_list & wait fields in the same cache line

net/socket.c

@@ -489,6 +489,7 @@ static struct socket *sock_alloc(void)
 
 	sock = SOCKET_I(inode);
 
+	kmemcheck_annotate_bitfield(sock, type);
 	inode->i_mode = S_IFSOCK | S_IRWXUGO;
 	inode->i_uid = current_fsuid();
 	inode->i_gid = current_fsgid();