diff options
Diffstat (limited to 'fs/nfs/super.c')
| -rw-r--r-- | fs/nfs/super.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index fa517ae9207f..2426e713b77f 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1054,10 +1054,11 @@ static int nfs_validate_mount_data(void *options, { struct nfs_mount_data *data = (struct nfs_mount_data *)options; + memset(args, 0, sizeof(*args)); + if (data == NULL) goto out_no_data; - memset(args, 0, sizeof(*args)); args->flags = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP); args->rsize = NFS_MAX_FILE_IO_SIZE; args->wsize = NFS_MAX_FILE_IO_SIZE; @@ -1474,6 +1475,11 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags, error = PTR_ERR(mntroot); goto error_splat_super; } + if (mntroot->d_inode->i_op != &nfs_dir_inode_operations) { + dput(mntroot); + error = -ESTALE; + goto error_splat_super; + } s->s_flags |= MS_ACTIVE; mnt->mnt_sb = s; @@ -1531,10 +1537,11 @@ static int nfs4_validate_mount_data(void *options, struct nfs4_mount_data *data = (struct nfs4_mount_data *)options; char *c; + memset(args, 0, sizeof(*args)); + if (data == NULL) goto out_no_data; - memset(args, 0, sizeof(*args)); args->rsize = NFS_MAX_FILE_IO_SIZE; args->wsize = NFS_MAX_FILE_IO_SIZE; args->timeo = 600; |