--- sys/compat/linux/linux_misc.c.orig
+++ sys/compat/linux/linux_misc.c
@@ -749,6 +749,7 @@
 		error = linux_copyout_rusage(&wru.wru_self, rup);
 	if (error == 0 && infop != NULL && td->td_retval[0] != 0) {
 		sig = bsd_to_linux_signal(siginfo.si_signo);
+		memset(&lsi, 0, sizeof(lsi));
 		siginfo_to_lsiginfo(&siginfo, &lsi, sig);
 		error = copyout(&lsi, infop, sizeof(lsi));
 	}