From: Barbara Kaczorowska <bkjg@google.com>
Date: Tue, 18 Aug 2020 23:22:22 +0000 (+0000)
Subject: Fix bug in distribution_percentile function
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=76fa375ac42fd06ca97da3f9c272a799d14a756d;p=thirdparty%2Fcollectd.git

Fix bug in distribution_percentile function

This commit will add fix to the distribution_percentile function.
Before this commit, distribution_percentile function didn't check
if it received null pointer as an argument and didn't handle this
case and in result it had seg fault. Now this bug is fixed.
---

diff --git a/src/daemon/distribution.c b/src/daemon/distribution.c
index a0731423e..52201b7e7 100644
--- a/src/daemon/distribution.c
+++ b/src/daemon/distribution.c
@@ -242,7 +242,7 @@ static double tree_get_counter(distribution_t *d, size_t node_index,
 }
 
 double distribution_percentile(distribution_t *dist, double percent) {
-  if (percent <= 0 || percent > 100) {
+  if (percent <= 0 || percent > 100 || dist == NULL) {
     errno = EINVAL;
     return NAN;
   }