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-rw-r--r--openbsc/src/nat/bsc_nat.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index da85456a8..2aa2d7369 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -103,9 +103,15 @@ int nm_state_event(enum nm_evt evt, uint8_t obj_class, void *obj,
void input_event(int event, enum e1inp_sign_type type, struct gsm_bts_trx *trx)
{}
-static void queue_for_msc(struct bsc_msc_connection *con, struct msgb *msg) __attribute__((nonnull (1, 2)));
static void queue_for_msc(struct bsc_msc_connection *con, struct msgb *msg)
{
+ if (!con) {
+ LOGP(DINP, LOGL_ERROR, "No MSC Connection assigned. Check your code.\n");
+ msgb_free(msg);
+ return;
+ }
+
+
if (write_queue_enqueue(&con->write_queue, msg) != 0) {
LOGP(DINP, LOGL_ERROR, "Failed to enqueue the write.\n");
msgb_free(msg);