Fix: use after free on metadata cache reallocation

[lttng-modules.git] / lttng-events.h

diff --git a/lttng-events.h b/lttng-events.h
index 118ea3b0db52d82e6072e17aa901c1850e22e43c..c2eba8f60e2df984611b04752c875361a2c25b13 100644 (file)
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -321,7 +321,6 @@ struct lttng_metadata_stream {
        wait_queue_head_t read_wait;    /* Reader buffer-level wait queue */
        struct list_head list;          /* Stream list */
        struct lttng_transport *transport;
-       struct mutex lock;
 };
 
 struct lttng_session {
@@ -344,6 +343,7 @@ struct lttng_metadata_cache {
        struct kref refcount;           /* Metadata cache usage */
        struct list_head metadata_stream;       /* Metadata stream list */
        uuid_le uuid;                   /* Trace session unique ID (copy) */
+       struct mutex lock;
 };
 
 struct lttng_session *lttng_session_create(void);