From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 2 Dec 2014 03:06:23 +0000 (-0500)
Subject: Fix: Missing RCU read lock in kernel_destroy_session()
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=d069d57732e9a19624078b6e8ca424dbd5827fc0;p=lttng-tools.git

Fix: Missing RCU read lock in kernel_destroy_session()

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

diff --git a/src/bin/lttng-sessiond/kernel.c b/src/bin/lttng-sessiond/kernel.c
index b7a362dc0..6b404c0ed 100644
--- a/src/bin/lttng-sessiond/kernel.c
+++ b/src/bin/lttng-sessiond/kernel.c
@@ -794,6 +794,7 @@ void kernel_destroy_session(struct ltt_kernel_session *ksess)
 		struct lttng_ht_iter iter;
 
 		/* For each consumer socket. */
+		rcu_read_lock();
 		cds_lfht_for_each_entry(ksess->consumer->socks->ht, &iter.iter,
 				socket, node.node) {
 			struct ltt_kernel_channel *chan;
@@ -807,6 +808,7 @@ void kernel_destroy_session(struct ltt_kernel_session *ksess)
 				}
 			}
 		}
+		rcu_read_unlock();
 	}
 
 	/* Close any relayd session */