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-rw-r--r--net/mptcp/subflow.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 3cf2eeea9d80..53c75b0e5dce 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -1036,6 +1036,16 @@ int mptcp_subflow_create_socket(struct sock *sk, struct socket **new_sock)
if (err)
return err;
+ /* the newly created socket really belongs to the owning MPTCP master
+ * socket, even if for additional subflows the allocation is performed
+ * by a kernel workqueue. Adjust inode references, so that the
+ * procfs/diag interaces really show this one belonging to the correct
+ * user.
+ */
+ SOCK_INODE(sf)->i_ino = SOCK_INODE(sk->sk_socket)->i_ino;
+ SOCK_INODE(sf)->i_uid = SOCK_INODE(sk->sk_socket)->i_uid;
+ SOCK_INODE(sf)->i_gid = SOCK_INODE(sk->sk_socket)->i_gid;
+
subflow = mptcp_subflow_ctx(sf->sk);
pr_debug("subflow=%p", subflow);