check for missing result of rate_ctr_group_alloc()

In case the counter group allocation fails, we must handle this
gracefully and fail the allocation of the parent object, too.

RelateD: OS#2361
Change-Id: I7dad4a4d52fe05f6b990359841b4408df5990e21

src/gprs/gb_proxy.c

@@ -1431,6 +1431,10 @@ int gbproxy_init_config(struct gbproxy_config *cfg)
 
 	INIT_LLIST_HEAD(&cfg->bts_peers);
 	cfg->ctrg = rate_ctr_group_alloc(tall_bsc_ctx, &global_ctrg_desc, 0);
+	if (!cfg->ctrg) {
+		LOGP(DGPRS, LOGL_ERROR, "Cannot allocate global counter group!\n");
+		return -1;
+	}
 	clock_gettime(CLOCK_REALTIME, &tp);
 
 	return 0;

src/gprs/gb_proxy_peer.c

@@ -177,6 +177,10 @@ struct gbproxy_peer *gbproxy_peer_alloc(struct gbproxy_config *cfg, uint16_t bvc
 
 	peer->bvci = bvci;
 	peer->ctrg = rate_ctr_group_alloc(peer, &peer_ctrg_desc, bvci);
+	if (!peer->ctrg) {
+		talloc_free(peer);
+		return NULL;
+	}
 	peer->cfg = cfg;
 
 	llist_add(&peer->list, &cfg->bts_peers);

src/gprs/gprs_sgsn.c

@@ -129,6 +129,7 @@ static const struct rate_ctr_group_desc sgsn_ctrg_desc = {
 
 void sgsn_rate_ctr_init() {
 	sgsn->rate_ctrs = rate_ctr_group_alloc(tall_bsc_ctx, &sgsn_ctrg_desc, 0);
+	OSMO_ASSERT(sgsn->rate_ctrs);
 }
 
 /* look-up an SGSN MM context based on Iu UE context (struct ue_conn_ctx)*/
@@ -229,6 +230,11 @@ struct sgsn_mm_ctx *sgsn_mm_ctx_alloc_gb(uint32_t tlli,
 	LOGMMCTXP(LOGL_DEBUG, ctx, "Allocated with %s cipher.\n",
 		  get_value_string(gprs_cipher_names, ctx->ciph_algo));
 	ctx->ctrg = rate_ctr_group_alloc(ctx, &mmctx_ctrg_desc, tlli);
+	if (!ctx->ctrg) {
+		LOGMMCTXP(LOGL_ERROR, ctx, "Cannot allocate counter group\n");
+		talloc_free(ctx);
+		return NULL;
+	}
 	INIT_LLIST_HEAD(&ctx->pdp_list);
 
 	llist_add(&ctx->list, &sgsn_mm_ctxts);
@@ -253,6 +259,11 @@ struct sgsn_mm_ctx *sgsn_mm_ctx_alloc_iu(void *uectx)
 	ctx->pmm_state = PMM_DETACHED;
 	ctx->auth_triplet.key_seq = GSM_KEY_SEQ_INVAL;
 	ctx->ctrg = rate_ctr_group_alloc(ctx, &mmctx_ctrg_desc, 0);
+	if (!ctx->ctrg) {
+		LOGMMCTXP(LOGL_ERROR, ctx, "Cannot allocate counter group\n");
+		talloc_free(ctx);
+		return NULL;
+	}
 
 	/* Need to get RAID from IU conn */
 	ctx->ra = ctx->iu.ue_ctx->ra_id;
@@ -380,6 +391,11 @@ struct sgsn_pdp_ctx *sgsn_pdp_ctx_alloc(struct sgsn_mm_ctx *mm,
 	pdp->mm = mm;
 	pdp->nsapi = nsapi;
 	pdp->ctrg = rate_ctr_group_alloc(pdp, &pdpctx_ctrg_desc, nsapi);
+	if (!pdp->ctrg) {
+		LOGPDPCTXP(LOGL_ERROR, pdp, "Error allocation counter group\n");
+		talloc_free(pdp);
+		return NULL;
+	}
 	llist_add(&pdp->list, &mm->pdp_list);
 	llist_add(&pdp->g_list, &sgsn_pdp_ctxts);
 

src/libbsc/net_init.c

@@ -61,6 +61,10 @@ struct gsm_network *bsc_network_init(void *ctx,
 
 	/* init statistics */
 	net->bsc_ctrs = rate_ctr_group_alloc(net, &bsc_ctrg_desc, 0);
+	if (!net->bsc_ctrs) {
+		talloc_free(net);
+		return NULL;
+	}
 
 	gsm_net_update_ctype(net);
 

src/libcommon-cs/common_cs.c

@@ -68,6 +68,10 @@ struct gsm_network *gsm_network_init(void *ctx,
 
 	/* init statistics */
 	net->msc_ctrs = rate_ctr_group_alloc(net, &msc_ctrg_desc, 0);
+	if (!net->msc_ctrs) {
+		talloc_free(net);
+		return NULL;
+	}
 	net->active_calls = osmo_counter_alloc("msc.active_calls");
 
 	net->mncc_recv = mncc_recv;