Re: [PATCH v2] rust_binder: clear freeze listener on node removal

[Greg Kroah-Hartman]

On Fri, Jul 03, 2026 at 12:31:43PM +0200, Alice Ryhl wrote:
> On Fri, Jul 3, 2026 at 12:27 PM Greg Kroah-Hartman
> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > On Mon, Jun 15, 2026 at 01:13:16PM +0000, Alice Ryhl wrote:
> > > Generally userspace is supposed to explicitly clear freeze listeners
> > > before they drop the refcount on the node ref to zero, but there's
> > > nothing forcing that. Currently, in this scenario the freeze listener
> > > remains in the freeze_listeners rbtree and in the remote node's freeze
> > > listener list, even though the ref for which the listener is registered
> > > is gone. This could potentially lead to a memory leak due to a refcount
> > > cycle. Thus, remove the freeze listener in this scenario.
> > >
> > > Cc: stable@xxxxxxxxxxxxxxx
> > > Fixes: eafedbc7c050 ("rust_binder: add Rust Binder driver")
> > > Signed-off-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
> > > ---
> > > This series is based on top of:
> > > https://lore.kernel.org/all/20260615-binder-noderefs-spin-v3-0-3235f5a3e0a0@xxxxxxxxxx/
> >
> > Hm, but that's not a bugfix series, so I can't take this patch now for
> > 7.2-final.  Do you want to redo this one or wait for 7.3-rc1?
> 
> I can reorder them.

Great, thanks!