--- a/pam-ck-connector/pam-ck-connector.c.orig	2015-05-14 06:36:12.217472340 +0200
+++ b/pam-ck-connector/pam-ck-connector.c	2015-05-14 06:37:03.465067270 +0200
@@ -197,7 +197,8 @@ _util_name_to_uid (const char *username,
 
         bufsize = sysconf (_SC_GETPW_R_SIZE_MAX);
         if (bufsize == -1) {
-                return res;
+		/* musl returns -1, so that use a considerable buffer size */
+		bufsize = BUFSIZ;
         }
         buf = calloc (sizeof (char), bufsize);
         rc = getpwnam_r (username, &pwd, buf, bufsize, &pwdp);
