diff options
| -rw-r--r-- | openbsc/src/bsc_api.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/openbsc/src/bsc_api.c b/openbsc/src/bsc_api.c index 267998fa6..35babc319 100644 --- a/openbsc/src/bsc_api.c +++ b/openbsc/src/bsc_api.c @@ -262,7 +262,17 @@ int bsc_api_init(struct gsm_network *network, struct bsc_api *api) int gsm0808_submit_dtap(struct gsm_subscriber_connection *conn, struct msgb *msg, int link_id, int allow_sach) { - uint8_t sapi = link_id & 0x7; + uint8_t sapi; + + + if (!conn->lchan) { + LOGP(DMSC, LOGL_ERROR, + "Called submit dtap without an lchan.\n"); + msgb_free(msg); + return -1; + } + + sapi = link_id & 0x7; msg->lchan = conn->lchan; msg->trx = msg->lchan->ts->trx; |