From: Mathieu Desnoyers Date: Thu, 5 Dec 2019 06:58:04 +0000 (-0500) Subject: Fix: lttng-live: use-after-free in get_next_index() X-Git-Tag: v1.5.8~6 X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=a4e7565e5f77f914eab073310895a73096276907 Fix: lttng-live: use-after-free in get_next_index() Running babeltrace under valgrind with a test-cases doing per-pid lttng tracing in live mode triggers this use-after-free in get_next_index() when stream is hung up. Signed-off-by: Mathieu Desnoyers Signed-off-by: Jérémie Galarneau --- diff --git a/formats/lttng-live/lttng-live-comm.c b/formats/lttng-live/lttng-live-comm.c index 33a78029..96817f5e 100644 --- a/formats/lttng-live/lttng-live-comm.c +++ b/formats/lttng-live/lttng-live-comm.c @@ -1108,8 +1108,8 @@ retry: viewer_stream->in_trace = 0; bt_list_del(&viewer_stream->trace_stream_node); bt_list_del(&viewer_stream->session_stream_node); - g_free(viewer_stream); *stream_id = be64toh(rp->stream_id); + g_free(viewer_stream); break; case LTTNG_VIEWER_INDEX_ERR: fprintf(stderr, "[error] get_next_index: error\n");