selinux: don't revalidate inodes in selinux_socket_getpeersec_dgram()

We don't have to worry about socket inodes being invalidated so
use inode_security_novalidate() to fetch the inode's security blob.

Signed-off-by: Paul Moore <paul@paul-moore.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 912deee3f01e..65642be91644 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4598,6 +4598,7 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
 {
         u32 peer_secid = SECSID_NULL;
         u16 family;
+        struct inode_security_struct *isec;
 
         if (skb && skb->protocol == htons(ETH_P_IP))
                 family = PF_INET;
@@ -4608,9 +4609,10 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
         else
                 goto out;
 
-        if (sock && family == PF_UNIX)
-                selinux_inode_getsecid(SOCK_INODE(sock), &peer_secid);
-        else if (skb)
+        if (sock && family == PF_UNIX) {
+                isec = inode_security_novalidate(SOCK_INODE(sock));
+                peer_secid = isec->sid;
+        } else if (skb)
                 selinux_skb_peerlbl_sid(skb, family, &peer_secid);
 
 out: