From 69c4b66c6d609d0a896abcc1ba8cda4b2da49c49 Mon Sep 17 00:00:00 2001
From: Kip Macy <kmacy@FreeBSD.org>
Date: Mon, 1 Dec 2008 05:44:08 +0000
Subject: [PATCH] null out m_next when marshalling a packet

---
 sys/dev/cxgb/sys/uipc_mvec.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/dev/cxgb/sys/uipc_mvec.c b/sys/dev/cxgb/sys/uipc_mvec.c
index 1293e22b1e48..1c6f4b287af8 100644
--- a/sys/dev/cxgb/sys/uipc_mvec.c
+++ b/sys/dev/cxgb/sys/uipc_mvec.c
@@ -293,7 +293,9 @@ retry:
 		/*
 		 * is an immediate mbuf or is from the packet zone
 		 */
-		n = n->m_next;
+		mhead = n->m_next;
+		n->m_next = NULL;
+		n = mhead;
 	}
 	*nsegs = seg_count;
 	*m = m0;