Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs xattr regression fixes from Al Viro.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  make xattr_resolve_handlers() safe to use with NULL ->s_xattr
  xattr: Fail with -EINVAL for NULL attribute names