From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Tue, 29 Nov 2011 23:54:25 +0000 (-0500)
Subject: Fix ust_app_clean_list segfault
X-Git-Tag: v2.0-pre15~58
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=0d5d001d7df80ba9e8c9026b48b8995ca15c38dd;p=lttng-tools.git

Fix ust_app_clean_list segfault

The 4th parameter of cds_lfht_for_each_entry is the member of the
structure, not a pointer to a variable. Therefore, node was never
populated.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/lttng-sessiond/ust-app.c b/lttng-sessiond/ust-app.c
index 8e7a0ce1d..047225143 100644
--- a/lttng-sessiond/ust-app.c
+++ b/lttng-sessiond/ust-app.c
@@ -1217,7 +1217,6 @@ error:
 void ust_app_clean_list(void)
 {
 	int ret;
-	struct cds_lfht_node *node;
 	struct cds_lfht_iter iter;
 	struct ust_app *app;
 
@@ -1228,7 +1227,7 @@ void ust_app_clean_list(void)
 	cds_lfht_for_each_entry(ust_app_ht, &iter, app, node) {
 		ret = hashtable_del(ust_app_ht, &iter);
 		assert(!ret);
-		call_rcu(&node->head, delete_ust_app_rcu);
+		call_rcu(&iter.node->head, delete_ust_app_rcu);
 	}
 
 	hashtable_destroy(ust_app_ht);