From c80a1c58deeac0c21cbf8d952c1bd08f1afbe8ed Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 4 Apr 2013 15:55:00 -0400 Subject: [PATCH] NFSv4: Fix a memory leak in nfs4_discover_server_trunking commit b193d59a4863ea670872d76dc99231ddeb598625 upstream. When we assign a new rpc_client to clp->cl_rpcclient, we need to destroy the old one. Signed-off-by: Trond Myklebust Cc: Chuck Lever Signed-off-by: Greg Kroah-Hartman --- fs/nfs/nfs4state.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index e61f68d5ef21..994fbe2c714c 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1877,7 +1877,13 @@ again: status = PTR_ERR(clnt); break; } - clp->cl_rpcclient = clnt; + /* Note: this is safe because we haven't yet marked the + * client as ready, so we are the only user of + * clp->cl_rpcclient + */ + clnt = xchg(&clp->cl_rpcclient, clnt); + rpc_shutdown_client(clnt); + clnt = clp->cl_rpcclient; goto again; case -NFS4ERR_MINOR_VERS_MISMATCH: -- 2.39.2