[PATCH RFC 3/5] SUNRPC: Ensure server-side sockets have a sock->file
From: Chuck Lever <cel@kernel.org>
Date: 2023-03-20 14:24:48
Subsystem:
kernel nfsd, sunrpc, and lockd servers, networking [general], nfs, sunrpc, and lockd clients, the rest · Maintainers:
Chuck Lever, Jeff Layton, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Trond Myklebust, Anna Schumaker, Linus Torvalds
From: Chuck Lever <chuck.lever@oracle.com> The TLS handshake upcall mechanism requires a non-NULL sock->file on the socket it hands to user space. svc_sock_free() already releases sock->file properly if one exists. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> --- net/sunrpc/svcsock.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 91a62bea6999..b6df73cb706a 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c@@ -1340,26 +1340,37 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv, struct socket *sock, int flags) { + struct file *filp = NULL; struct svc_sock *svsk; struct sock *inet; int pmap_register = !(flags & SVC_SOCK_ANONYMOUS); - int err = 0; svsk = kzalloc(sizeof(*svsk), GFP_KERNEL); if (!svsk) return ERR_PTR(-ENOMEM); + if (!sock->file) { + filp = sock_alloc_file(sock, O_NONBLOCK, NULL); + if (IS_ERR(filp)) { + kfree(svsk); + return ERR_CAST(filp); + } + } + inet = sock->sk; - /* Register socket with portmapper */ - if (pmap_register) + if (pmap_register) { + int err; + err = svc_register(serv, sock_net(sock->sk), inet->sk_family, inet->sk_protocol, ntohs(inet_sk(inet)->inet_sport)); - - if (err < 0) { - kfree(svsk); - return ERR_PTR(err); + if (err < 0) { + if (filp) + fput(filp); + kfree(svsk); + return ERR_PTR(err); + } } svsk->sk_sock = sock;