mutex_lock(&tpg->acl_node_mutex);
acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname);
+ /*
+ * Obtain the acl_kref now, which will be dropped upon the
+ * release of se_sess memory within transport_free_session().
+ */
+ if (acl)
+ kref_get(&acl->acl_kref);
Ð think the comment is highly confusing as it's about one of the
callers, while the function has many.
I'd suggest you move it to core_tpg_check_initiator_node_acl instead.
Also I think iscsit_build_sendtargets_response will need a put on
the nacl, otherwise you'll leak references.