Change in ...osmo-msc[master]: catch GSUP auth result without auth_fsm

[neels]

neels has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-msc/+/15544


Change subject: catch GSUP auth result without auth_fsm
......................................................................

catch GSUP auth result without auth_fsm

When a vlr_subscr receives an Send Auth Info result, properly check whether the
subscriber has an auth_fsm.

Before, a missing auth_fsm would crash osmo-msc with:

    vlr.c:762 Trying to dispatch event 1 to non-existent FSM instance!

Related: OS#4191
Change-Id: I1995d8f68cfde1140968fb9a97bd054de950de2e
---
M src/libvlr/vlr.c
1 file changed, 6 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/44/15544/1

diff --git a/src/libvlr/vlr.c b/src/libvlr/vlr.c
index ea160b1..4ea3caa 100644
--- a/src/libvlr/vlr.c
+++ b/src/libvlr/vlr.c
@@ -757,6 +757,12 @@
 	struct osmo_fsm_inst *auth_fi = vsub->auth_fsm;
 	void *data = (void *) gsup;
 
+	if (!auth_fi) {
+		LOGVSUBP(LOGL_ERROR, vsub, "Received GSUP %s, but there is no auth_fsm\n",
+			 osmo_gsup_message_type_name(gsup->message_type));
+		return -1;
+	}
+
 	switch (gsup->message_type) {
 	case OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT:
 		osmo_fsm_inst_dispatch(auth_fi, VLR_AUTH_E_HLR_SAI_ACK, data);

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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-Change-Id: I1995d8f68cfde1140968fb9a97bd054de950de2e
Gerrit-Change-Number: 15544
Gerrit-PatchSet: 1
Gerrit-Owner: neels <nhofmeyr at sysmocom.de>
Gerrit-MessageType: newchange
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