From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Wed, 16 Mar 2022 15:55:08 +0000 (-0400)
Subject: Fix: sessiond: event name length check is too strict
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4ab5469cb4922334d1cd537fa064935472b470a7;p=deliverable%2Flttng-tools.git

Fix: sessiond: event name length check is too strict

A truncation check when initializing an event from an event rule limits
the name to one less character than is supposed to be allowed.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I172c5098597923d14508c150c7b3577f759bae72
---

diff --git a/src/bin/lttng-sessiond/ust-app.cpp b/src/bin/lttng-sessiond/ust-app.cpp
index 44db0accd..1ae2bbac3 100644
--- a/src/bin/lttng-sessiond/ust-app.cpp
+++ b/src/bin/lttng-sessiond/ust-app.cpp
@@ -2149,7 +2149,7 @@ static int init_ust_event_notifier_from_event_rule(
 
 	event_notifier->event.instrumentation = LTTNG_UST_ABI_TRACEPOINT;
 	ret = lttng_strncpy(event_notifier->event.name, pattern,
-			LTTNG_UST_ABI_SYM_NAME_LEN - 1);
+			sizeof(event_notifier->event.name));
 	if (ret) {
 		ERR("Failed to copy event rule pattern to notifier: pattern = '%s' ",
 				pattern);