X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=lttng-sessiond%2Fust-app.c;h=72e3aeef2c68aee6d71b67f1a0c28393e8387e5c;hp=b2c73ffed08894a3af0622d226491e060e5110fb;hb=1f3580c7152869e3827f475a713a9567f8357bc8;hpb=f348bb5e108ee280184d408725069cf325be54b9

diff --git a/lttng-sessiond/ust-app.c b/lttng-sessiond/ust-app.c
index b2c73ffed..72e3aeef2 100644
--- a/lttng-sessiond/ust-app.c
+++ b/lttng-sessiond/ust-app.c
@@ -859,10 +859,16 @@ void ust_app_global_update(struct ltt_ust_session *usess, int sock)
 	struct lttng_ust_object_data *obj_event;
 	struct lttng_ust_channel_attr uattr;
 
+	rcu_read_lock();
+
+	if (usess == NULL) {
+		DBG2("No UST session on global update. Returning");
+		goto error;
+	}
+
 	DBG2("UST app global update for app sock %d for session uid %d", sock,
 			usess->uid);
 
-	rcu_read_lock();
 	app = find_app_by_sock(sock);
 	if (app == NULL) {
 		ERR("Failed to update app sock %d", sock);