On Tue, Jun 24, 2025 at 07:57:46AM +0100, Al Viro wrote:
> [if nobody objects, I'm going to throw that into #fixes and send to Linus
> in a couple of days]
>
> Once want_mount_setattr() has returned a positive, it does require
> finish_mount_kattr() to release ->mnt_userns. Failing do_mount_setattr()
> does not change that.
>
> As the result, we can end up leaking userns and possibly mnt_idmap as
> well.
>
> Fixes: c4a16820d901 ("fs: add open_tree_attr()")
> Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> ---
Sure, thanks!
Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
