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-rw-r--r--kernel/lockdep.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 54cc0dc7b303..e69d633d6aa6 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -431,6 +431,7 @@ unsigned int max_lockdep_depth;
431 * about it later on, in lockdep_info(). 431 * about it later on, in lockdep_info().
432 */ 432 */
433static int lockdep_init_error; 433static int lockdep_init_error;
434static const char *lock_init_error;
434static unsigned long lockdep_init_trace_data[20]; 435static unsigned long lockdep_init_trace_data[20];
435static struct stack_trace lockdep_init_trace = { 436static struct stack_trace lockdep_init_trace = {
436 .max_entries = ARRAY_SIZE(lockdep_init_trace_data), 437 .max_entries = ARRAY_SIZE(lockdep_init_trace_data),
@@ -657,6 +658,7 @@ look_up_lock_class(struct lockdep_map *lock, unsigned int subclass)
657 if (unlikely(!lockdep_initialized)) { 658 if (unlikely(!lockdep_initialized)) {
658 lockdep_init(); 659 lockdep_init();
659 lockdep_init_error = 1; 660 lockdep_init_error = 1;
661 lock_init_error = lock->name;
660 save_stack_trace(&lockdep_init_trace); 662 save_stack_trace(&lockdep_init_trace);
661 } 663 }
662#endif 664#endif
@@ -3978,7 +3980,8 @@ void __init lockdep_info(void)
3978 3980
3979#ifdef CONFIG_DEBUG_LOCKDEP 3981#ifdef CONFIG_DEBUG_LOCKDEP
3980 if (lockdep_init_error) { 3982 if (lockdep_init_error) {
3981 printk("WARNING: lockdep init error! Arch code didn't call lockdep_init() early enough?\n"); 3983 printk("WARNING: lockdep init error! lock-%s was acquired"
3984 "before lockdep_init\n", lock_init_error);
3982 printk("Call stack leading to lockdep invocation was:\n"); 3985 printk("Call stack leading to lockdep invocation was:\n");
3983 print_stack_trace(&lockdep_init_trace, 0); 3986 print_stack_trace(&lockdep_init_trace, 0);
3984 } 3987 }