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-rw-r--r--fs/nfs/super.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index dac663dc5611..614efeed5437 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1249,13 +1249,13 @@ static int nfs_validate_mount_data(void *options,
case 5:
memset(data->context, 0, sizeof(data->context));
case 6:
- if (data->flags & NFS_MOUNT_VER3)
+ if (data->flags & NFS_MOUNT_VER3) {
+ if (data->root.size > NFS3_FHSIZE || data->root.size == 0)
+ goto out_invalid_fh;
mntfh->size = data->root.size;
- else
+ } else
mntfh->size = NFS2_FHSIZE;
- if (mntfh->size > sizeof(mntfh->data))
- goto out_invalid_fh;
memcpy(mntfh->data, data->root.data, mntfh->size);
if (mntfh->size < sizeof(mntfh->data))