Re: [PATCH] cuse: wait for pending RCU callbacks on module exit

[Miklos Szeredi]

On Fri, 14 Aug 2026 at 15:40, Baokun Li <libaokun@xxxxxxxxxxxxxxxxx> wrote:
>
> Since commit 053fc4f755ad ("fuse: fix UAF in rcu pathwalks"),
> fuse_conn_put() frees the fuse_conn through call_rcu() rather than
> synchronously.  For cuse, fc->release is cuse_fc_release(), which
> lives in the cuse module.  If the module is removed before the RCU
> grace period ends, the callback jumps into freed module memory:

free_module() calls synchronize_rcu(), so this should not be an issue.

Thanks,
Miklos