From 6c58cbc307f2a3f9ed1df1335c8eebe774c1a109 Mon Sep 17 00:00:00 2001
From: Niklas Hallqvist <niklas@cvs.openbsd.org>
Date: Fri, 21 May 1999 23:15:23 +0000
Subject: For hard expiration-pressure you need to protect PF_KEY socket
 queueing with spltdb()

---
 sys/net/pfkey.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/net/pfkey.c b/sys/net/pfkey.c
index 42be9bd022b..46a0a4f33fa 100644
--- a/sys/net/pfkey.c
+++ b/sys/net/pfkey.c
@@ -97,6 +97,7 @@ int
 pfkey_sendup(struct socket *socket, struct mbuf *packet, int more)
 {
   struct mbuf *packet2;
+  int s;
 
   if (more) {
     if (!(packet2 = m_copym(packet, 0, M_COPYALL, M_DONTWAIT)))
@@ -104,10 +105,13 @@ pfkey_sendup(struct socket *socket, struct mbuf *packet, int more)
   } else
     packet2 = packet;
 
+  s = spltdb();
   if (!sbappendaddr(&socket->so_rcv, &pfkey_addr, packet2, NULL)) {
     m_freem(packet2);
-    return 0;
+    splx(s);
+    return ENOBUFS;
   }
+  splx(s);
 
   sorwakeup(socket);
   return 0;
-- 
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