From b7edda8a98281b6eb400fe41f2498e031bce7ccf Mon Sep 17 00:00:00 2001
From: Zdenek Kabelac <zkabelac@redhat.com>
Date: Tue, 27 Jul 2021 15:53:48 +0200
Subject: [PATCH] cov: guard index

Analyzer wants explicit protect to not underflow index.
---
 lib/activate/activate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/activate/activate.c b/lib/activate/activate.c
index 94fc9441d..b44efc617 100644
--- a/lib/activate/activate.c
+++ b/lib/activate/activate.c
@@ -563,7 +563,7 @@ int module_present(struct cmd_context *cmd, const char *target_name)
 			    dm_sysfs_dir(), target_name);
 
 	if (i > 0) {
-		while (path[--i] != '/')  /* stop on dm_ */
+		while ((i > 0) && path[--i] != '/')  /* stop on dm_ */
 			if (path[i] == '-')
 				path[i] = '_'; /* replace '-' with '_' */