---

yaml
---
r: 61643
b: refs/heads/master
c: c71063c
h: refs/heads/master
i:
  61641: 0427780
  61639: 352e60a
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d38e1d5aaee384698fcef9455d6e2df1d062a1d0
+refs/heads/master: c71063c9c9dc232d0d51f936f237f7dc5681e8e3

trunk/kernel/lockdep.c

@@ -375,6 +375,11 @@ unsigned int max_recursion_depth;
  * about it later on, in lockdep_info().
  */
 static int lockdep_init_error;
+static unsigned long lockdep_init_trace_data[20];
+static struct stack_trace lockdep_init_trace = {
+	.max_entries = ARRAY_SIZE(lockdep_init_trace_data),
+	.entries = lockdep_init_trace_data,
+};
 
 /*
  * Various lockdep statistics:
@@ -662,6 +667,7 @@ look_up_lock_class(struct lockdep_map *lock, unsigned int subclass)
 	if (unlikely(!lockdep_initialized)) {
 		lockdep_init();
 		lockdep_init_error = 1;
+		save_stack_trace(&lockdep_init_trace);
 	}
 #endif
 
@@ -3040,8 +3046,11 @@ void __init lockdep_info(void)
 		sizeof(struct held_lock) * MAX_LOCK_DEPTH);
 
 #ifdef CONFIG_DEBUG_LOCKDEP
-	if (lockdep_init_error)
-		printk("WARNING: lockdep init error! Arch code didnt call lockdep_init() early enough?\n");
+	if (lockdep_init_error) {
+		printk("WARNING: lockdep init error! Arch code didn't call lockdep_init() early enough?\n");
+		printk("Call stack leading to lockdep invocation was:\n");
+		print_stack_trace(&lockdep_init_trace, 0);
+	}
 #endif
 }