[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>

2 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/net.h b/include/linux/net.h
index 4fc2ffd527f9..9040a10584f7 100644
--- a/include/linux/net.h
+++ b/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
diff --git a/net/socket.c b/net/socket.c
index 6d4716559047..2a022c00d85c 100644
--- a/net/socket.c
+++ b/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();