The histogram can have no 'values'. A check is required in order to
prevent segfault.
Fixes: 5d1c2ea(libtracefs: Implement API to create / modify and display histograms)
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
src/tracefs-hist.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/tracefs-hist.c b/src/tracefs-hist.c
index eeb8374..c112b68 100644
--- a/src/tracefs-hist.c
+++ b/src/tracefs-hist.c
@@ -364,7 +364,7 @@ add_sort_key(struct tracefs_hist *hist, const char *sort_key, char **list)
break;
}
- if (!key_list[i]) {
+ if (!key_list[i] && val_list) {
for (i = 0; val_list[i]; i++) {
if (strcmp(val_list[i], sort_key) == 0)
break;
--
2.30.2
|