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-Tag: v2.6.0-rc4~3
X-Git-Url: http://git.lttng.org./?a=commitdiff_plain;h=e4074462a7ce4662a258d9f87a0bc19b5dce999e;hp=a407f9967766c6e3108a0bdf779d2d2124fd576f;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 a9151f4d6..65c470e09 100644
--- a/src/bin/lttng-sessiond/kernel.c
+++ b/src/bin/lttng-sessiond/kernel.c
@@ -793,6 +793,7 @@ 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;
@@ -806,6 +807,7 @@ void kernel_destroy_session(struct ltt_kernel_session *ksess)
 				}
 			}
 		}
+		rcu_read_unlock();
 	}
 
 	/* Close any relayd session */