From: mochel@digitalimplant.org <mochel@digitalimplant.org>
Date: Fri, 25 Mar 2005 02:59:59 +0000 (-0800)
Subject: [PATCH] Don't reference NULL klist pointer in klist_remove().
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=0293a509405dccecc30783a5d729d615b68d6a77;p=deliverable%2Flinux.git

[PATCH] Don't reference NULL klist pointer in klist_remove().

Signed-off-by: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff -Nru a/lib/klist.c b/lib/klist.c
---

diff --git a/lib/klist.c b/lib/klist.c
index 02177d72dc89..738ab810160a 100644
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -145,9 +145,10 @@ EXPORT_SYMBOL_GPL(klist_del);
 
 void klist_remove(struct klist_node * n)
 {
-	spin_lock(&n->n_klist->k_lock);
+	struct klist * k = n->n_klist;
+	spin_lock(&k->k_lock);
 	klist_dec_and_del(n);
-	spin_unlock(&n->n_klist->k_lock);
+	spin_unlock(&k->k_lock);
 	wait_for_completion(&n->n_removed);
 }