From 8e6b8fc6559efb2a8d773685177cb07a721cc713 Mon Sep 17 00:00:00 2001
From: Li-Wen Hsu <lwhsu@FreeBSD.org>
Date: Fri, 4 Sep 2020 19:24:27 +0000
Subject: [PATCH] Initialize len to avoid ENOMEM from sysctl(3).

PR:		248933
Sponsored by:	The FreeBSD Foundation
---
 tests/sys/kern/kern_copyin.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/sys/kern/kern_copyin.c b/tests/sys/kern/kern_copyin.c
index ed4225361ec3..b77360e928fd 100644
--- a/tests/sys/kern/kern_copyin.c
+++ b/tests/sys/kern/kern_copyin.c
@@ -66,6 +66,7 @@ get_maxuser_address(void)
 	mib[1] = KERN_PROC;
 	mib[2] = KERN_PROC_PS_STRINGS;
 	mib[3] = getpid();
+	len = sizeof(psstrings);
 	error = sysctl(mib, nitems(mib), &psstrings, &len, NULL, 0);
 	if (error != 0)
 		return (0);