From: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date: Wed, 21 Dec 2011 08:09:50 +0000 (+0800)
Subject: altq/cbq: Clear poll-cache if the cached class is to be destroyed
X-Git-Tag: v3.0.0~338
X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/f96a3201d1fb1c28fdd737d0e1ed4272d21bad74

altq/cbq: Clear poll-cache if the cached class is to be destroyed
---

diff --git a/sys/net/altq/altq_rmclass.c b/sys/net/altq/altq_rmclass.c
index fb399d4adc..d99368f4a0 100644
--- a/sys/net/altq/altq_rmclass.c
+++ b/sys/net/altq/altq_rmclass.c
@@ -533,6 +533,10 @@ rmc_delete_class(struct rm_ifdat *ifd, struct rm_class *cl)
 		callout_stop(&cl->callout_);
 
 	crit_enter();
+
+	if (ifd->pollcache_ == cl)
+		ifd->pollcache_ = NULL;
+
 	/*
 	 * Free packets in the packet queue.
 	 * XXX - this may not be a desired behavior.  Packets should be