diff -Naur a/toys/lsb/killall.c b/toys/lsb/killall.c
--- a/toys/lsb/killall.c	2014-10-02 18:23:27.000000000 +0530
+++ b/toys/lsb/killall.c	2014-10-06 17:05:30.440923936 +0530
@@ -40,7 +40,7 @@
   if (pid == TT.cur_pid) return 0;
 
   if (toys.optflags & FLAG_i) {
-    sprintf(toybuf, "Signal %4000s(%d) ?", name, (int)pid);
+    snprintf(toybuf, sizeof(toybuf), "Signal %s(%d) ?", name, (int)pid);
     if (!yesno(toybuf, 0)) return 0;
   }