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[MME] fix the crash bug (#1205) 

If UE is in Authentication-EMM State and eNB is disconnected,
MME could be crashed.
This commit is contained in:
Sukchan Lee 2021-11-06 22:39:09 +09:00
parent 562b7ef7de
commit 0ea2142ba6
1 changed files with 10 additions and 5 deletions
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15
src/mme/mme-sm.c
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@ -435,9 +435,17 @@ void mme_state_operational(ogs_fsm_t *s, mme_event_t *e)
s6a_message = (ogs_diam_s6a_message_t *)s6abuf->data;
ogs_assert(s6a_message);
if (s6a_message->result_code != ER_DIAMETER_SUCCESS) {
enb_ue_t *enb_ue = NULL;
enb_ue = enb_ue_cycle(mme_ue->enb_ue);
if (!enb_ue) {
ogs_error("S1 context has already been removed");
ogs_subscription_data_free(
&s6a_message->ula_message.subscription_data);
ogs_pkbuf_free(s6abuf);
break;
}
if (s6a_message->result_code != ER_DIAMETER_SUCCESS) {
/* Unfortunately fd doesn't distinguish
* between result-code and experimental-result-code.
*
@ -452,9 +460,6 @@ void mme_state_operational(ogs_fsm_t *s, mme_event_t *e)
nas_eps_send_attach_reject(mme_ue,
emm_cause, ESM_CAUSE_PROTOCOL_ERROR_UNSPECIFIED));
enb_ue = enb_ue_cycle(mme_ue->enb_ue);
ogs_assert(enb_ue);
ogs_assert(OGS_OK ==
s1ap_send_ue_context_release_command(enb_ue,
S1AP_Cause_PR_nas, S1AP_CauseNas_normal_release,