From ed6bbe44304a63a4e92948a5347184d8843703ac Mon Sep 17 00:00:00 2001
From: Chris Metcalf <cmetcalf@tilera.com>
Date: Tue, 29 May 2012 15:07:31 -0700
Subject: [PATCH] --- yaml --- r: 308979 b: refs/heads/master c:
 17a801f4bfeb8d55df1b05fa7adb16ada504e765 h: refs/heads/master i:   308977:
 aa583dfaeda2c55893b5f6c838a758128439c5ee   308975:
 c9e0749440730232b570d178446d6079fa186ad4 v: v3

---
 [refs]                 | 2 +-
 trunk/lib/list_debug.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 40ceccf9449f..f78931a7e433 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 401dea7f7ade662b77c33ce2498fb5b4f97cb29c
+refs/heads/master: 17a801f4bfeb8d55df1b05fa7adb16ada504e765
diff --git a/trunk/lib/list_debug.c b/trunk/lib/list_debug.c
index 3810b481f940..23a5e031cd8b 100644
--- a/trunk/lib/list_debug.c
+++ b/trunk/lib/list_debug.c
@@ -31,6 +31,9 @@ void __list_add(struct list_head *new,
 		"list_add corruption. prev->next should be "
 		"next (%p), but was %p. (prev=%p).\n",
 		next, prev->next, prev);
+	WARN(new == prev || new == next,
+	     "list_add double add: new=%p, prev=%p, next=%p.\n",
+	     new, prev, next);
 	next->prev = new;
 	new->next = next;
 	new->prev = prev;