diff --git a/[refs] b/[refs]
index abcead01f3e6..f1dfcb6e9d44 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 17abecfe651c862cd31b1f9e8ef6cfc29083f00d
+refs/heads/master: 70edcd77a0d6d0f8731c826764f5eb6732f521e9
diff --git a/trunk/kernel/irq/manage.c b/trunk/kernel/irq/manage.c
index 1f314221d534..438a01464287 100644
--- a/trunk/kernel/irq/manage.c
+++ b/trunk/kernel/irq/manage.c
@@ -479,6 +479,9 @@ void free_irq(unsigned int irq, void *dev_id)
 			return;
 		}
 		printk(KERN_ERR "Trying to free already-free IRQ %d\n", irq);
+#ifdef CONFIG_DEBUG_SHIRQ
+		dump_stack();
+#endif
 		spin_unlock_irqrestore(&desc->lock, flags);
 		return;
 	}