On 02/25, Andrii Nakryiko wrote: > > --- a/kernel/events/uprobes.c > +++ b/kernel/events/uprobes.c > @@ -762,10 +762,14 @@ static struct uprobe *hprobe_expire(struct hprobe *hprobe, bool get) > enum hprobe_state hstate; > > /* > - * return_instance's hprobe is protected by RCU. > - * Underlying uprobe is itself protected from reuse by SRCU. > + * Caller should guarantee that return_instance is not going to be > + * freed from under us. This can be achieved either through holding > + * rcu_read_lock() or by owning return_instance in the first place. > + * > + * Underlying uprobe is itself protected from reuse by SRCU, so ensure > + * SRCU lock is held properly. > */ > - lockdep_assert(rcu_read_lock_held() && srcu_read_lock_held(&uretprobes_srcu)); > + lockdep_assert(srcu_read_lock_held(&uretprobes_srcu)); Reviewed-by: Oleg Nesterov <oleg@xxxxxxxxxx>
