freevxfs: ensure fast symlinks are NUL-terminated

Ensure fast symlink targets are NUL-terminated, even if corrupted
on-disk.

Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Duane Griffin <duaneg@dghda.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c
index 9f3f2ceb73f0..03a6ea5e99f7 100644
--- a/fs/freevxfs/vxfs_inode.c
+++ b/fs/freevxfs/vxfs_inode.c
@@ -325,8 +325,10 @@ vxfs_iget(struct super_block *sbp, ino_t ino)
                 if (!VXFS_ISIMMED(vip)) {
                         ip->i_op = &page_symlink_inode_operations;
                         ip->i_mapping->a_ops = &vxfs_aops;
-                } else
+                } else {
                         ip->i_op = &vxfs_immed_symlink_iops;
+                        vip->vii_immed.vi_immed[ip->i_size] = '\0';
+                }
         } else
                 init_special_inode(ip, ip->i_mode, old_decode_dev(vip->vii_rdev));