From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Sat, 27 May 2017 18:54:16 +0000 (-0400)
Subject: Fix: dereference of NULL mdec when opening packetized metadata file
X-Git-Tag: v2.0.0-pre1~153
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=e6829ae7350a1bc72f7f3fdcdcce469963a441ce

Fix: dereference of NULL mdec when opening packetized metadata file

ctf_metadata_decoder_packetized_file_stream_to_buf() uses
ctf_metadata_decoder_packetized_file_stream_to_buf_with_mdec() with
a NULL mdec. This results in a NULL dereference whenever the mdec
error sream is accessed.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/plugins/ctf/common/metadata/decoder.c b/plugins/ctf/common/metadata/decoder.c
index 6d60c619..bb4cbde8 100644
--- a/plugins/ctf/common/metadata/decoder.c
+++ b/plugins/ctf/common/metadata/decoder.c
@@ -26,7 +26,7 @@
 #include "decoder.h"
 #include "scanner.h"
 
-#define PRINT_ERR_STREAM	mdec->err_stream
+#define PRINT_ERR_STREAM	(mdec ? mdec->err_stream : stderr)
 #define PRINT_PREFIX		"metadata-decoder"
 #include "../print.h"