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| author | Olga Kornievskaia <okorniev@redhat.com> | 2025-10-15 18:08:46 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-19 16:34:03 +0200 |
| commit | efbc2d6a929189ae44ff0ab812e2b1869c6bd80e (patch) | |
| tree | 9506f8da81050e77d43e98422b5920c7d62261c3 | |
| parent | 0a1ee3c932dcf6f446e69a0ce67f36550a69a9ed (diff) | |
| download | linux-efbc2d6a929189ae44ff0ab812e2b1869c6bd80e.tar.gz linux-efbc2d6a929189ae44ff0ab812e2b1869c6bd80e.tar.bz2 linux-efbc2d6a929189ae44ff0ab812e2b1869c6bd80e.zip | |
nfsd: unregister with rpcbind when deleting a transport
[ Upstream commit 898374fdd7f06fa4c4a66e8be3135efeae6128d5 ]
When a listener is added, a part of creation of transport also registers
program/port with rpcbind. However, when the listener is removed,
while transport goes away, rpcbind still has the entry for that
port/type.
When deleting the transport, unregister with rpcbind when appropriate.
---v2 created a new xpt_flag XPT_RPCB_UNREG to mark TCP and UDP
transport and at xprt destroy send rpcbind unregister if flag set.
Suggested-by: Chuck Lever <chuck.lever@oracle.com>
Fixes: d093c9089260 ("nfsd: fix management of listener transports")
Cc: stable@vger.kernel.org
Signed-off-by: Olga Kornievskaia <okorniev@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/sunrpc/svc_xprt.h | 3 | ||||
| -rw-r--r-- | net/sunrpc/svc_xprt.c | 13 | ||||
| -rw-r--r-- | net/sunrpc/svcsock.c | 2 |
3 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index 7064ebbd550b..72d1a08f4828 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -103,6 +103,9 @@ enum { * it has access to. It is NOT counted * in ->sv_tmpcnt. */ + XPT_RPCB_UNREG, /* transport that needs unregistering + * with rpcbind (TCP, UDP) on destroy + */ }; static inline void svc_xprt_set_valid(struct svc_xprt *xpt) diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index dbd96b295dfa..67474470320c 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -1028,6 +1028,19 @@ static void svc_delete_xprt(struct svc_xprt *xprt) struct svc_serv *serv = xprt->xpt_server; struct svc_deferred_req *dr; + /* unregister with rpcbind for when transport type is TCP or UDP. + */ + if (test_bit(XPT_RPCB_UNREG, &xprt->xpt_flags)) { + struct svc_sock *svsk = container_of(xprt, struct svc_sock, + sk_xprt); + struct socket *sock = svsk->sk_sock; + + if (svc_register(serv, xprt->xpt_net, sock->sk->sk_family, + sock->sk->sk_protocol, 0) < 0) + pr_warn("failed to unregister %s with rpcbind\n", + xprt->xpt_class->xcl_name); + } + if (test_and_set_bit(XPT_DEAD, &xprt->xpt_flags)) return; diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index e61e94576058..443d8390ebf1 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -837,6 +837,7 @@ static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv) /* data might have come in before data_ready set up */ set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags); set_bit(XPT_CHNGBUF, &svsk->sk_xprt.xpt_flags); + set_bit(XPT_RPCB_UNREG, &svsk->sk_xprt.xpt_flags); /* make sure we get destination address info */ switch (svsk->sk_sk->sk_family) { @@ -1357,6 +1358,7 @@ static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv) if (sk->sk_state == TCP_LISTEN) { strcpy(svsk->sk_xprt.xpt_remotebuf, "listener"); set_bit(XPT_LISTENER, &svsk->sk_xprt.xpt_flags); + set_bit(XPT_RPCB_UNREG, &svsk->sk_xprt.xpt_flags); sk->sk_data_ready = svc_tcp_listen_data_ready; set_bit(XPT_CONN, &svsk->sk_xprt.xpt_flags); } else { |