From d1a8016a2d1e75021ecc8715e3c81442d7218eb6 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Wed, 13 Apr 2011 14:31:28 -0400 Subject: 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 Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 9bf41eab3e46..8a03ee0689f3 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2224,8 +2224,9 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, 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); -- cgit v1.2.3