Fix: out-of-bound memory access

[babeltrace.git] / formats / ctf / ctf.c

diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c
index 9cb19f4dc323159be1da0bb8e4b00b3526577ffd..fb9b2333cf63180a208ace408b9d9b1b90deebc4 100644 (file)
--- a/formats/ctf/ctf.c
+++ b/formats/ctf/ctf.c
@@ -936,6 +936,11 @@ void ctf_packet_seek(struct bt_stream_pos *stream_pos, size_t index, int whence)
                        assert(0);
                }
 
+               if (pos->cur_index >= pos->packet_index->len) {
+                       pos->offset = EOF;
+                       return;
+               }
+
                packet_index = &g_array_index(pos->packet_index,
                                struct packet_index, pos->cur_index);
                if (pos->cur_index > 0) {
@@ -948,11 +953,6 @@ void ctf_packet_seek(struct bt_stream_pos *stream_pos, size_t index, int whence)
                ctf_update_current_packet_index(&file_stream->parent,
                                prev_index, packet_index);
 
-               if (pos->cur_index >= pos->packet_index->len) {
-                       pos->offset = EOF;
-                       return;
-               }
-
                /*
                 * We need to check if we are in trace read or called
                 * from packet indexing.  In this last case, the