X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fmain.c;h=886456a0ce8ce56f37867fd2a7b04871f5e813fa;hp=e1d50974bfc2f3c220fd7cf219e6145b005f5ae4;hb=e0c7ec2b3d96dd7ddd9375c5f72239a733d0cf24;hpb=d8e76ef6aa9d28ff287ec6d201c6e2be37181554

diff --git a/src/bin/lttng-sessiond/main.c b/src/bin/lttng-sessiond/main.c
index e1d50974b..886456a0c 100644
--- a/src/bin/lttng-sessiond/main.c
+++ b/src/bin/lttng-sessiond/main.c
@@ -1110,10 +1110,16 @@ static void *thread_manage_apps(void *data)
 					}
 
 					/*
-					 * Add channel(s) and event(s) to newly registered apps
-					 * from lttng global UST domain.
+					 * Validate UST version compatibility.
 					 */
-					update_ust_app(ust_cmd.sock);
+					ret = ust_app_validate_version(ust_cmd.sock);
+					if (ret >= 0) {
+						/*
+						 * Add channel(s) and event(s) to newly registered apps
+						 * from lttng global UST domain.
+						 */
+						update_ust_app(ust_cmd.sock);
+					}
 
 					ret = ust_app_register_done(ust_cmd.sock);
 					if (ret < 0) {