svcrdma: Fix error handling during listening endpoint creation
A listening endpoint isn't known to the generic transport switch until
the svc_create_xprt function returns without error. Calling
svc_xprt_put within the xpo_create function causes the module reference
count to be erroneously decremented.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index e85ac77..d9ed5f2 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -667,31 +667,27 @@
cma_xprt = rdma_create_xprt(serv, 1);
if (!cma_xprt)
- return ERR_PTR(ENOMEM);
+ return ERR_PTR(-ENOMEM);
xprt = &cma_xprt->sc_xprt;
listen_id = rdma_create_id(rdma_listen_handler, cma_xprt, RDMA_PS_TCP);
if (IS_ERR(listen_id)) {
- svc_xprt_put(&cma_xprt->sc_xprt);
- dprintk("svcrdma: rdma_create_id failed = %ld\n",
- PTR_ERR(listen_id));
- return (void *)listen_id;
+ ret = PTR_ERR(listen_id);
+ dprintk("svcrdma: rdma_create_id failed = %d\n", ret);
+ goto err0;
}
+
ret = rdma_bind_addr(listen_id, sa);
if (ret) {
- rdma_destroy_id(listen_id);
- svc_xprt_put(&cma_xprt->sc_xprt);
dprintk("svcrdma: rdma_bind_addr failed = %d\n", ret);
- return ERR_PTR(ret);
+ goto err1;
}
cma_xprt->sc_cm_id = listen_id;
ret = rdma_listen(listen_id, RPCRDMA_LISTEN_BACKLOG);
if (ret) {
- rdma_destroy_id(listen_id);
- svc_xprt_put(&cma_xprt->sc_xprt);
dprintk("svcrdma: rdma_listen failed = %d\n", ret);
- return ERR_PTR(ret);
+ goto err1;
}
/*
@@ -702,6 +698,12 @@
svc_xprt_set_local(&cma_xprt->sc_xprt, sa, salen);
return &cma_xprt->sc_xprt;
+
+ err1:
+ rdma_destroy_id(listen_id);
+ err0:
+ kfree(cma_xprt);
+ return ERR_PTR(ret);
}
/*