Re #1903: Fix crash when cleaning STUN response cache.

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@5233 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 10 insertions, 0 deletions

diff --git a/pjnath/src/pjnath/stun_session.c b/pjnath/src/pjnath/stun_session.c
index e7dfa582..d7eb2dbb 100644
--- a/pjnath/src/pjnath/stun_session.c
+++ b/pjnath/src/pjnath/stun_session.c
@@ -209,15 +209,25 @@ static void on_cache_timeout(pj_timer_heap_t *timer_heap,
 			     struct pj_timer_entry *entry)
 {
     pj_stun_tx_data *tdata;
+    pj_stun_session *sess;
 
     PJ_UNUSED_ARG(timer_heap);
 
     entry->id = PJ_FALSE;
     tdata = (pj_stun_tx_data*) entry->user_data;
+    sess = tdata->sess;
+
+    pj_grp_lock_acquire(sess->grp_lock);
+    if (sess->is_destroying) {
+	pj_grp_lock_release(sess->grp_lock);
+	return;
+    }
 
     PJ_LOG(5,(SNAME(tdata->sess), "Response cache deleted"));
 
     pj_list_erase(tdata);
+    pj_grp_lock_release(sess->grp_lock);
+
     destroy_tdata(tdata, PJ_FALSE);
 }