Commit 8ef32955 authored by Petr Vandrovec's avatar Petr Vandrovec Committed by Anna Schumaker

NFS: Ignore connections that have cl_rpcclient uninitialized

cl_rpcclient starts as ERR_PTR(-EINVAL), and connections like that
are floating freely through the system.  Most places check whether
pointer is valid before dereferencing it, but newly added code
in nfs_match_client does not.

Which causes crashes when more than one NFS mount point is present.
Signed-off-by: default avatarPetr Vandrovec <petr@vandrovec.name>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent bb29dd84
...@@ -314,7 +314,8 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat ...@@ -314,7 +314,8 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat
/* Match the full socket address */ /* Match the full socket address */
if (!rpc_cmp_addr_port(sap, clap)) if (!rpc_cmp_addr_port(sap, clap))
/* Match all xprt_switch full socket addresses */ /* Match all xprt_switch full socket addresses */
if (!rpc_clnt_xprt_switch_has_addr(clp->cl_rpcclient, if (IS_ERR(clp->cl_rpcclient) ||
!rpc_clnt_xprt_switch_has_addr(clp->cl_rpcclient,
sap)) sap))
continue; continue;
......
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