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 4d1b54f907992a5a22dad8ce4ecc0f5172f135f6..484534c4272948208a0b426468282c9ae78d8873 100644 (file)
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -415,7 +415,6 @@ 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;
 };
 
 
@@ -461,6 +460,7 @@ 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;
 };
 
 void lttng_lock_sessions(void);
@@ -605,6 +605,7 @@ void lttng_remove_context_field(struct lttng_ctx **ctx,
                                struct lttng_ctx_field *field);
 void lttng_destroy_context(struct lttng_ctx *ctx);
 int lttng_add_pid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_procname_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_prio_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_nice_to_ctx(struct lttng_ctx **ctx);