From f13042ec7ea6842cbee81590f40b0e5c2e25a9bf Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marcin=20=C5=9Alusarz?= <marcin.slusarz@intel.com>
Date: Fri, 24 Jul 2020 18:14:24 +0200
Subject: [PATCH] util: fix possible buffer overflow in
 util_get_process_exec_path
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Found by Coverity.

Signed-off-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Fixes: f8f1413070a ("util/u_process: add util_get_process_exec_path")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6067>
---
 src/util/u_process.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/util/u_process.c b/src/util/u_process.c
index 74c4d10192e..68fda93a53b 100644
--- a/src/util/u_process.c
+++ b/src/util/u_process.c
@@ -187,6 +187,9 @@ util_get_process_exec_path(char* process_path, size_t len)
 
     return 0;
 success:
+   if (r == len)
+      return 0;
+
     process_path[r] = '\0';
     return r;
 
-- 
2.30.2