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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-08-20 12:42:15 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-14 10:00:11 -0700
commit73b8b9f59d61e0c0e2beaada246f1ed41df0c8fd (patch)
treead77a2ff4b8f219baa3842bb85bd9bae319a4651
parent94a6f1787e1f896585a093aa2f45cefbbef80f24 (diff)
NFSv3: Ensure that do_proc_get_root() reports errors correctly
commit 086600430493e04b802bee6e5b3ce0458e4eb77f upstream. If the rpc call to NFS3PROC_FSINFO fails, then we need to report that error so that the mount fails. Otherwise we can end up with a superblock with completely unusable values for block sizes, maxfilesize, etc. Reported-by: Yuanming Chen <hikvision_linux@163.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--fs/nfs/nfs3proc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 5242eae6711..a1e416b7bae 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -69,7 +69,7 @@ do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
nfs_fattr_init(info->fattr);
status = rpc_call_sync(client, &msg, 0);
dprintk("%s: reply fsinfo: %d\n", __func__, status);
- if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
+ if (status == 0 && !(info->fattr->valid & NFS_ATTR_FATTR)) {
msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
msg.rpc_resp = info->fattr;
status = rpc_call_sync(client, &msg, 0);