From b3fa5e2f656a5c9f262f363e4ad0cdde99828498 Mon Sep 17 00:00:00 2001
From: Kip Macy <kmacy@FreeBSD.org>
Date: Wed, 9 Jan 2008 08:01:42 +0000
Subject: [PATCH] don't decrement ref count below 1 for EXT_PACKET

---
 sys/dev/cxgb/sys/uipc_mvec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/cxgb/sys/uipc_mvec.c b/sys/dev/cxgb/sys/uipc_mvec.c
index 61e9c4585de..5e5af5668e3 100644
--- a/sys/dev/cxgb/sys/uipc_mvec.c
+++ b/sys/dev/cxgb/sys/uipc_mvec.c
@@ -384,7 +384,7 @@ mb_free_ext_fast(struct mbuf_iovec *mi, int type, int idx)
 	 */
 	while (dofree == 0) {
 		cnt = *(mi->mi_refcnt);
-		if (mi->mi_type == EXT_PACKET) {
+		if (mi->mi_type == EXT_PACKET && cnt == 1) {
 			dofree = 1;
 			break;
 		}
-- 
2.45.0