diff -uPr libkcapi-1.3.0/lib/doc/bin/docproc.c libkcapi-1.3.0.werror/lib/doc/bin/docproc.c
--- libkcapi-1.3.0/lib/doc/bin/docproc.c	2021-04-18 11:55:57.000000000 -0400
+++ libkcapi-1.3.0.werror/lib/doc/bin/docproc.c	2021-07-12 08:13:21.812438118 -0400
@@ -361,7 +361,8 @@
 {
 	char *vec[4]; /* kerneldoc -list file NULL */
 	pid_t pid;
-	ssize_t ret, i, count, start;
+	ssize_t ret, i, count;
+	unsigned int start;
 	char real_filename[PATH_MAX + 1];
 	int pipefd[2];
 	char *data, *str;