NFS: Fix infinite loop in gss_create_upcall()
There can be an infinite loop if gss_create_upcall() is called without
the userspace program running. To prevent this, we return -EACCES if
we notice that pipe_version hasn't changed (indicating that the pipe
has not been opened).
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9bf41ea..8a03ee0 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2224,8 +2224,9 @@
for (i = 0; i < len; i++) {
status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
- if (status != -EPERM)
- break;
+ if (status == -EPERM || status == -EACCES)
+ continue;
+ break;
}
if (status == 0)
status = nfs4_server_capabilities(server, fhandle);