From 64779280c9f5c9227f7fbe31ced169fdca464a71 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Sat, 22 Nov 2014 18:15:02 +0000
Subject: [PATCH] The size value should be asserted when it is known.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
---
 sys/kern/imgact_elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/imgact_elf.c b/sys/kern/imgact_elf.c
index 0bdd6edee8c..53abf924cc3 100644
--- a/sys/kern/imgact_elf.c
+++ b/sys/kern/imgact_elf.c
@@ -1800,7 +1800,7 @@ __elfN(note_threadmd)(void *arg, struct sbuf *sb, size_t *sizep)
 		buf = NULL;
 	size = 0;
 	__elfN(dump_thread)(td, buf, &size);
-	KASSERT(*sizep == size, ("invalid size"));
+	KASSERT(sb == NULL || *sizep == size, ("invalid size"));
 	if (size != 0 && sb != NULL)
 		sbuf_bcat(sb, buf, size);
 	free(buf, M_TEMP);