From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Sat, 21 Feb 2015 11:27:05 +0000 (+0100)
Subject: Fixes a bug in locking code.
X-Git-Tag: v1.5.0~27
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab006391305165c805f75e3a2ce20946748233c9;p=thirdparty%2Fbird.git

Fixes a bug in locking code.

When multiple protocols have a lock for the same IP address, it crashes
under some circumstances.

Thanks to Matthias Schiffer for the bugreport.
---

diff --git a/nest/locks.c b/nest/locks.c
index c74f2f45d..ad2af4938 100644
--- a/nest/locks.c
+++ b/nest/locks.c
@@ -70,7 +70,7 @@ olock_free(resource *r)
 	  DBG("olock: -> %p becomes locked\n", n);
 	  q = SKIP_BACK(struct object_lock, n, n);
 	  rem_node(n);
-	  add_tail_list(&l->waiters, &q->waiters);
+	  add_tail_list(&q->waiters, &l->waiters);
 	  q->state = OLOCK_STATE_EVENT;
 	  add_head(&olock_list, n);
 	  ev_schedule(olock_event);