tools: hv: Check retrun value of strchr call

Check return value of strchr call and dereference it only if it is
not NULL.

Signed-off-by: Tomas Hozza <thozza@redhat.com>
Acked-by:  K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 81cbb6ecce89..5b8f28f2aafa 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -765,7 +765,9 @@ static void kvp_process_ipconfig_file(char *cmd,
                         break;
 
                 x = strchr(p, '\n');
-                *x = '\0';
+                if (x)
+                        *x = '\0';
+
                 strcat(config_buf, p);
                 strcat(config_buf, ";");
         }