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authorLinus Torvalds <torvalds@linux-foundation.org>2022-05-06 23:19:11 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-05-06 23:19:11 +0300
commitadcffc1716f875610ba57195ec979a4ef655ddd3 (patch)
tree53452e037df95e45136de037a552558352ac01fd /net
parentbce58da1f39843d47ccd6d9839fadbf898b72358 (diff)
parenta3d0562d4dc039bca39445e1cddde7951662e17d (diff)
downloadlinux-adcffc1716f875610ba57195ec979a4ef655ddd3.tar.xz
Merge tag 'nfs-for-5.18-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust: "Highlights include: Stable fixes: - Fix a socket leak when setting up an AF_LOCAL RPC client - Ensure that knfsd connects to the gss-proxy daemon on setup Bugfixes: - Fix a refcount leak when migrating a task off an offlined transport - Don't gratuitously invalidate inode attributes on delegation return - Don't leak sockets in xs_local_connect() - Ensure timely close of disconnected AF_LOCAL sockets" * tag 'nfs-for-5.18-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: Revert "SUNRPC: attempt AF_LOCAL connect on setup" SUNRPC: Ensure gss-proxy connects on setup SUNRPC: Ensure timely close of disconnected AF_LOCAL sockets SUNRPC: Don't leak sockets in xs_local_connect() NFSv4: Don't invalidate inode attributes on delegation return SUNRPC release the transport of a relocated task with an assigned transport
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_upcall.c2
-rw-r--r--net/sunrpc/clnt.c14
-rw-r--r--net/sunrpc/xprtsock.c35
3 files changed, 42 insertions, 9 deletions
diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c
index 61c276bddaf2..8ca1d809b78d 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.c
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c
@@ -97,7 +97,7 @@ static int gssp_rpc_create(struct net *net, struct rpc_clnt **_clnt)
* timeout, which would result in reconnections being
* done without the correct namespace:
*/
- .flags = RPC_CLNT_CREATE_NOPING |
+ .flags = RPC_CLNT_CREATE_IGNORE_NULL_UNAVAIL |
RPC_CLNT_CREATE_NO_IDLE_TIMEOUT
};
struct rpc_clnt *clnt;
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index af0174d7ce5a..22c28cf43eba 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -479,6 +479,9 @@ static struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
if (!(args->flags & RPC_CLNT_CREATE_NOPING)) {
int err = rpc_ping(clnt);
+ if ((args->flags & RPC_CLNT_CREATE_IGNORE_NULL_UNAVAIL) &&
+ err == -EOPNOTSUPP)
+ err = 0;
if (err != 0) {
rpc_shutdown_client(clnt);
return ERR_PTR(err);
@@ -1065,10 +1068,13 @@ rpc_task_get_next_xprt(struct rpc_clnt *clnt)
static
void rpc_task_set_transport(struct rpc_task *task, struct rpc_clnt *clnt)
{
- if (task->tk_xprt &&
- !(test_bit(XPRT_OFFLINE, &task->tk_xprt->state) &&
- (task->tk_flags & RPC_TASK_MOVEABLE)))
- return;
+ if (task->tk_xprt) {
+ if (!(test_bit(XPRT_OFFLINE, &task->tk_xprt->state) &&
+ (task->tk_flags & RPC_TASK_MOVEABLE)))
+ return;
+ xprt_release(task);
+ xprt_put(task->tk_xprt);
+ }
if (task->tk_flags & RPC_TASK_NO_ROUND_ROBIN)
task->tk_xprt = rpc_task_get_first_xprt(clnt);
else
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 8ab64ea46870..650102a9c86a 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1419,6 +1419,26 @@ static size_t xs_tcp_bc_maxpayload(struct rpc_xprt *xprt)
#endif /* CONFIG_SUNRPC_BACKCHANNEL */
/**
+ * xs_local_state_change - callback to handle AF_LOCAL socket state changes
+ * @sk: socket whose state has changed
+ *
+ */
+static void xs_local_state_change(struct sock *sk)
+{
+ struct rpc_xprt *xprt;
+ struct sock_xprt *transport;
+
+ if (!(xprt = xprt_from_sock(sk)))
+ return;
+ transport = container_of(xprt, struct sock_xprt, xprt);
+ if (sk->sk_shutdown & SHUTDOWN_MASK) {
+ clear_bit(XPRT_CONNECTED, &xprt->state);
+ /* Trigger the socket release */
+ xs_run_error_worker(transport, XPRT_SOCK_WAKE_DISCONNECT);
+ }
+}
+
+/**
* xs_tcp_state_change - callback to handle TCP socket state changes
* @sk: socket whose state has changed
*
@@ -1866,6 +1886,7 @@ static int xs_local_finish_connecting(struct rpc_xprt *xprt,
sk->sk_user_data = xprt;
sk->sk_data_ready = xs_data_ready;
sk->sk_write_space = xs_udp_write_space;
+ sk->sk_state_change = xs_local_state_change;
sk->sk_error_report = xs_error_report;
xprt_clear_connected(xprt);
@@ -1950,6 +1971,9 @@ static void xs_local_connect(struct rpc_xprt *xprt, struct rpc_task *task)
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
int ret;
+ if (transport->file)
+ goto force_disconnect;
+
if (RPC_IS_ASYNC(task)) {
/*
* We want the AF_LOCAL connect to be resolved in the
@@ -1962,11 +1986,17 @@ static void xs_local_connect(struct rpc_xprt *xprt, struct rpc_task *task)
*/
task->tk_rpc_status = -ENOTCONN;
rpc_exit(task, -ENOTCONN);
- return;
+ goto out_wake;
}
ret = xs_local_setup_socket(transport);
if (ret && !RPC_IS_SOFTCONN(task))
msleep_interruptible(15000);
+ return;
+force_disconnect:
+ xprt_force_disconnect(xprt);
+out_wake:
+ xprt_clear_connecting(xprt);
+ xprt_wake_pending_tasks(xprt, -ENOTCONN);
}
#if IS_ENABLED(CONFIG_SUNRPC_SWAP)
@@ -2845,9 +2875,6 @@ static struct rpc_xprt *xs_setup_local(struct xprt_create *args)
}
xprt_set_bound(xprt);
xs_format_peer_addresses(xprt, "local", RPCBIND_NETID_LOCAL);
- ret = ERR_PTR(xs_local_setup_socket(transport));
- if (ret)
- goto out_err;
break;
default:
ret = ERR_PTR(-EAFNOSUPPORT);