[Xen-devel] [PATCH v2 1/7] libxl: fix off-by-one error in JSON parser

[Wei Liu <wei.liu2@xxxxxxxxxx>]

We need a sentinel slot in the generated libxl_key_value_list.

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
This should be backported to 4.5.
---
 tools/libxl/libxl_json.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/libxl/libxl_json.c b/tools/libxl/libxl_json.c
index ceb014a..98335b0 100644
--- a/tools/libxl/libxl_json.c
+++ b/tools/libxl/libxl_json.c
@@ -247,7 +247,7 @@ int libxl__key_value_list_parse_json(libxl__gc *gc, const 
libxl__json_object *o,
 
     maps = libxl__json_object_get_map(o);
     size = maps->count * 2;
-    kvl = *p = libxl__calloc(NOGC, size, sizeof(char *));
+    kvl = *p = libxl__calloc(NOGC, size+1, sizeof(char *));
 
     for (i = 0; i < maps->count; i++) {
         int idx = i * 2;
-- 
1.9.1


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