Lines Matching refs:object
283 struct kmemleak_object *object) in hex_dump_object() argument
285 const u8 *ptr = (const u8 *)object->pointer; in hex_dump_object()
289 len = min_t(size_t, object->size, HEX_MAX_LINES * HEX_ROW_SIZE); in hex_dump_object()
308 static bool color_white(const struct kmemleak_object *object) in color_white() argument
310 return object->count != KMEMLEAK_BLACK && in color_white()
311 object->count < object->min_count; in color_white()
314 static bool color_gray(const struct kmemleak_object *object) in color_gray() argument
316 return object->min_count != KMEMLEAK_BLACK && in color_gray()
317 object->count >= object->min_count; in color_gray()
325 static bool unreferenced_object(struct kmemleak_object *object) in unreferenced_object() argument
327 return (color_white(object) && object->flags & OBJECT_ALLOCATED) && in unreferenced_object()
328 time_before_eq(object->jiffies + jiffies_min_age, in unreferenced_object()
337 struct kmemleak_object *object) in print_unreferenced() argument
340 unsigned int msecs_age = jiffies_to_msecs(jiffies - object->jiffies); in print_unreferenced()
343 object->pointer, object->size); in print_unreferenced()
345 object->comm, object->pid, object->jiffies, in print_unreferenced()
347 hex_dump_object(seq, object); in print_unreferenced()
350 for (i = 0; i < object->trace_len; i++) { in print_unreferenced()
351 void *ptr = (void *)object->trace[i]; in print_unreferenced()
361 static void dump_object_info(struct kmemleak_object *object) in dump_object_info() argument
364 object->pointer, object->size); in dump_object_info()
366 object->comm, object->pid, object->jiffies); in dump_object_info()
367 pr_notice(" min_count = %d\n", object->min_count); in dump_object_info()
368 pr_notice(" count = %d\n", object->count); in dump_object_info()
369 pr_notice(" flags = 0x%x\n", object->flags); in dump_object_info()
370 pr_notice(" checksum = %u\n", object->checksum); in dump_object_info()
372 stack_trace_print(object->trace, object->trace_len, 4); in dump_object_info()
386 struct kmemleak_object *object = in lookup_object() local
388 if (ptr < object->pointer) in lookup_object()
389 rb = object->rb_node.rb_left; in lookup_object()
390 else if (object->pointer + object->size <= ptr) in lookup_object()
391 rb = object->rb_node.rb_right; in lookup_object()
392 else if (object->pointer == ptr || alias) in lookup_object()
393 return object; in lookup_object()
397 dump_object_info(object); in lookup_object()
410 static int get_object(struct kmemleak_object *object) in get_object() argument
412 return atomic_inc_not_zero(&object->use_count); in get_object()
421 struct kmemleak_object *object; in mem_pool_alloc() local
425 object = kmem_cache_alloc(object_cache, gfp_kmemleak_mask(gfp)); in mem_pool_alloc()
426 if (object) in mem_pool_alloc()
427 return object; in mem_pool_alloc()
432 object = list_first_entry_or_null(&mem_pool_free_list, in mem_pool_alloc()
433 typeof(*object), object_list); in mem_pool_alloc()
434 if (object) in mem_pool_alloc()
435 list_del(&object->object_list); in mem_pool_alloc()
437 object = &mem_pool[--mem_pool_free_count]; in mem_pool_alloc()
442 return object; in mem_pool_alloc()
448 static void mem_pool_free(struct kmemleak_object *object) in mem_pool_free() argument
452 if (object < mem_pool || object >= mem_pool + ARRAY_SIZE(mem_pool)) { in mem_pool_free()
453 kmem_cache_free(object_cache, object); in mem_pool_free()
459 list_add(&object->object_list, &mem_pool_free_list); in mem_pool_free()
470 struct kmemleak_object *object = in free_object_rcu() local
477 hlist_for_each_entry_safe(area, tmp, &object->area_list, node) { in free_object_rcu()
481 mem_pool_free(object); in free_object_rcu()
491 static void put_object(struct kmemleak_object *object) in put_object() argument
493 if (!atomic_dec_and_test(&object->use_count)) in put_object()
497 WARN_ON(object->flags & OBJECT_ALLOCATED); in put_object()
505 call_rcu(&object->rcu, free_object_rcu); in put_object()
507 free_object_rcu(&object->rcu); in put_object()
516 struct kmemleak_object *object; in find_and_get_object() local
520 object = lookup_object(ptr, alias); in find_and_get_object()
524 if (object && !get_object(object)) in find_and_get_object()
525 object = NULL; in find_and_get_object()
528 return object; in find_and_get_object()
535 static void __remove_object(struct kmemleak_object *object) in __remove_object() argument
537 rb_erase(&object->rb_node, &object_tree_root); in __remove_object()
538 list_del_rcu(&object->object_list); in __remove_object()
549 struct kmemleak_object *object; in find_and_remove_object() local
552 object = lookup_object(ptr, alias); in find_and_remove_object()
553 if (object) in find_and_remove_object()
554 __remove_object(object); in find_and_remove_object()
557 return object; in find_and_remove_object()
576 struct kmemleak_object *object, *parent; in create_object() local
580 object = mem_pool_alloc(gfp); in create_object()
581 if (!object) { in create_object()
587 INIT_LIST_HEAD(&object->object_list); in create_object()
588 INIT_LIST_HEAD(&object->gray_list); in create_object()
589 INIT_HLIST_HEAD(&object->area_list); in create_object()
590 raw_spin_lock_init(&object->lock); in create_object()
591 atomic_set(&object->use_count, 1); in create_object()
592 object->flags = OBJECT_ALLOCATED; in create_object()
593 object->pointer = ptr; in create_object()
594 object->size = kfence_ksize((void *)ptr) ?: size; in create_object()
595 object->excess_ref = 0; in create_object()
596 object->min_count = min_count; in create_object()
597 object->count = 0; /* white color initially */ in create_object()
598 object->jiffies = jiffies; in create_object()
599 object->checksum = 0; in create_object()
603 object->pid = 0; in create_object()
604 strncpy(object->comm, "hardirq", sizeof(object->comm)); in create_object()
606 object->pid = 0; in create_object()
607 strncpy(object->comm, "softirq", sizeof(object->comm)); in create_object()
609 object->pid = current->pid; in create_object()
616 strncpy(object->comm, current->comm, sizeof(object->comm)); in create_object()
620 object->trace_len = __save_stack_trace(object->trace); in create_object()
644 kmem_cache_free(object_cache, object); in create_object()
645 object = NULL; in create_object()
649 rb_link_node(&object->rb_node, rb_parent, link); in create_object()
650 rb_insert_color(&object->rb_node, &object_tree_root); in create_object()
652 list_add_tail_rcu(&object->object_list, &object_list); in create_object()
655 return object; in create_object()
661 static void __delete_object(struct kmemleak_object *object) in __delete_object() argument
665 WARN_ON(!(object->flags & OBJECT_ALLOCATED)); in __delete_object()
666 WARN_ON(atomic_read(&object->use_count) < 1); in __delete_object()
672 raw_spin_lock_irqsave(&object->lock, flags); in __delete_object()
673 object->flags &= ~OBJECT_ALLOCATED; in __delete_object()
674 raw_spin_unlock_irqrestore(&object->lock, flags); in __delete_object()
675 put_object(object); in __delete_object()
684 struct kmemleak_object *object; in delete_object_full() local
686 object = find_and_remove_object(ptr, 0); in delete_object_full()
687 if (!object) { in delete_object_full()
694 __delete_object(object); in delete_object_full()
704 struct kmemleak_object *object; in delete_object_part() local
707 object = find_and_remove_object(ptr, 1); in delete_object_part()
708 if (!object) { in delete_object_part()
721 start = object->pointer; in delete_object_part()
722 end = object->pointer + object->size; in delete_object_part()
724 create_object(start, ptr - start, object->min_count, in delete_object_part()
727 create_object(ptr + size, end - ptr - size, object->min_count, in delete_object_part()
730 __delete_object(object); in delete_object_part()
733 static void __paint_it(struct kmemleak_object *object, int color) in __paint_it() argument
735 object->min_count = color; in __paint_it()
737 object->flags |= OBJECT_NO_SCAN; in __paint_it()
740 static void paint_it(struct kmemleak_object *object, int color) in paint_it() argument
744 raw_spin_lock_irqsave(&object->lock, flags); in paint_it()
745 __paint_it(object, color); in paint_it()
746 raw_spin_unlock_irqrestore(&object->lock, flags); in paint_it()
751 struct kmemleak_object *object; in paint_ptr() local
753 object = find_and_get_object(ptr, 0); in paint_ptr()
754 if (!object) { in paint_ptr()
761 paint_it(object, color); in paint_ptr()
762 put_object(object); in paint_ptr()
790 struct kmemleak_object *object; in add_scan_area() local
793 object = find_and_get_object(ptr, 1); in add_scan_area()
794 if (!object) { in add_scan_area()
803 raw_spin_lock_irqsave(&object->lock, flags); in add_scan_area()
807 object->flags |= OBJECT_FULL_SCAN; in add_scan_area()
811 size = object->pointer + object->size - ptr; in add_scan_area()
812 } else if (ptr + size > object->pointer + object->size) { in add_scan_area()
814 dump_object_info(object); in add_scan_area()
823 hlist_add_head(&area->node, &object->area_list); in add_scan_area()
825 raw_spin_unlock_irqrestore(&object->lock, flags); in add_scan_area()
826 put_object(object); in add_scan_area()
838 struct kmemleak_object *object; in object_set_excess_ref() local
840 object = find_and_get_object(ptr, 0); in object_set_excess_ref()
841 if (!object) { in object_set_excess_ref()
847 raw_spin_lock_irqsave(&object->lock, flags); in object_set_excess_ref()
848 object->excess_ref = excess_ref; in object_set_excess_ref()
849 raw_spin_unlock_irqrestore(&object->lock, flags); in object_set_excess_ref()
850 put_object(object); in object_set_excess_ref()
861 struct kmemleak_object *object; in object_no_scan() local
863 object = find_and_get_object(ptr, 0); in object_no_scan()
864 if (!object) { in object_no_scan()
869 raw_spin_lock_irqsave(&object->lock, flags); in object_no_scan()
870 object->flags |= OBJECT_NO_SCAN; in object_no_scan()
871 raw_spin_unlock_irqrestore(&object->lock, flags); in object_no_scan()
872 put_object(object); in object_no_scan()
1014 struct kmemleak_object *object; in kmemleak_update_trace() local
1022 object = find_and_get_object((unsigned long)ptr, 1); in kmemleak_update_trace()
1023 if (!object) { in kmemleak_update_trace()
1031 raw_spin_lock_irqsave(&object->lock, flags); in kmemleak_update_trace()
1032 object->trace_len = __save_stack_trace(object->trace); in kmemleak_update_trace()
1033 raw_spin_unlock_irqrestore(&object->lock, flags); in kmemleak_update_trace()
1035 put_object(object); in kmemleak_update_trace()
1169 static bool update_checksum(struct kmemleak_object *object) in update_checksum() argument
1171 u32 old_csum = object->checksum; in update_checksum()
1175 object->checksum = crc32(0, kasan_reset_tag((void *)object->pointer), object->size); in update_checksum()
1179 return object->checksum != old_csum; in update_checksum()
1185 static void update_refs(struct kmemleak_object *object) in update_refs() argument
1187 if (!color_white(object)) { in update_refs()
1198 object->count++; in update_refs()
1199 if (color_gray(object)) { in update_refs()
1201 WARN_ON(!get_object(object)); in update_refs()
1202 list_add_tail(&object->gray_list, &gray_list); in update_refs()
1242 struct kmemleak_object *object; in scan_block() local
1263 object = lookup_object(pointer, 1); in scan_block()
1264 if (!object) in scan_block()
1266 if (object == scanned) in scan_block()
1275 raw_spin_lock_nested(&object->lock, SINGLE_DEPTH_NESTING); in scan_block()
1277 if (color_gray(object)) { in scan_block()
1278 excess_ref = object->excess_ref; in scan_block()
1282 update_refs(object); in scan_block()
1284 raw_spin_unlock(&object->lock); in scan_block()
1287 object = lookup_object(excess_ref, 0); in scan_block()
1288 if (!object) in scan_block()
1290 if (object == scanned) in scan_block()
1293 raw_spin_lock_nested(&object->lock, SINGLE_DEPTH_NESTING); in scan_block()
1294 update_refs(object); in scan_block()
1295 raw_spin_unlock(&object->lock); in scan_block()
1322 static void scan_object(struct kmemleak_object *object) in scan_object() argument
1331 raw_spin_lock_irqsave(&object->lock, flags); in scan_object()
1332 if (object->flags & OBJECT_NO_SCAN) in scan_object()
1334 if (!(object->flags & OBJECT_ALLOCATED)) in scan_object()
1337 if (hlist_empty(&object->area_list) || in scan_object()
1338 object->flags & OBJECT_FULL_SCAN) { in scan_object()
1339 void *start = (void *)object->pointer; in scan_object()
1340 void *end = (void *)(object->pointer + object->size); in scan_object()
1345 scan_block(start, next, object); in scan_object()
1351 raw_spin_unlock_irqrestore(&object->lock, flags); in scan_object()
1353 raw_spin_lock_irqsave(&object->lock, flags); in scan_object()
1354 } while (object->flags & OBJECT_ALLOCATED); in scan_object()
1356 hlist_for_each_entry(area, &object->area_list, node) in scan_object()
1359 object); in scan_object()
1361 raw_spin_unlock_irqrestore(&object->lock, flags); in scan_object()
1370 struct kmemleak_object *object, *tmp; in scan_gray_list() local
1377 object = list_entry(gray_list.next, typeof(*object), gray_list); in scan_gray_list()
1378 while (&object->gray_list != &gray_list) { in scan_gray_list()
1383 scan_object(object); in scan_gray_list()
1385 tmp = list_entry(object->gray_list.next, typeof(*object), in scan_gray_list()
1389 list_del(&object->gray_list); in scan_gray_list()
1390 put_object(object); in scan_gray_list()
1392 object = tmp; in scan_gray_list()
1405 struct kmemleak_object *object; in kmemleak_scan() local
1413 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_scan()
1414 raw_spin_lock_irqsave(&object->lock, flags); in kmemleak_scan()
1420 if (atomic_read(&object->use_count) > 1) { in kmemleak_scan()
1422 atomic_read(&object->use_count)); in kmemleak_scan()
1423 dump_object_info(object); in kmemleak_scan()
1427 object->count = 0; in kmemleak_scan()
1428 if (color_gray(object) && get_object(object)) in kmemleak_scan()
1429 list_add_tail(&object->gray_list, &gray_list); in kmemleak_scan()
1431 raw_spin_unlock_irqrestore(&object->lock, flags); in kmemleak_scan()
1498 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_scan()
1499 raw_spin_lock_irqsave(&object->lock, flags); in kmemleak_scan()
1500 if (color_white(object) && (object->flags & OBJECT_ALLOCATED) in kmemleak_scan()
1501 && update_checksum(object) && get_object(object)) { in kmemleak_scan()
1503 object->count = object->min_count; in kmemleak_scan()
1504 list_add_tail(&object->gray_list, &gray_list); in kmemleak_scan()
1506 raw_spin_unlock_irqrestore(&object->lock, flags); in kmemleak_scan()
1525 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_scan()
1526 raw_spin_lock_irqsave(&object->lock, flags); in kmemleak_scan()
1527 if (unreferenced_object(object) && in kmemleak_scan()
1528 !(object->flags & OBJECT_REPORTED)) { in kmemleak_scan()
1529 object->flags |= OBJECT_REPORTED; in kmemleak_scan()
1532 print_unreferenced(NULL, object); in kmemleak_scan()
1536 raw_spin_unlock_irqrestore(&object->lock, flags); in kmemleak_scan()
1620 struct kmemleak_object *object; in kmemleak_seq_start() local
1629 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_seq_start()
1632 if (get_object(object)) in kmemleak_seq_start()
1635 object = NULL; in kmemleak_seq_start()
1637 return object; in kmemleak_seq_start()
1685 struct kmemleak_object *object = v; in kmemleak_seq_show() local
1688 raw_spin_lock_irqsave(&object->lock, flags); in kmemleak_seq_show()
1689 if ((object->flags & OBJECT_REPORTED) && unreferenced_object(object)) in kmemleak_seq_show()
1690 print_unreferenced(seq, object); in kmemleak_seq_show()
1691 raw_spin_unlock_irqrestore(&object->lock, flags); in kmemleak_seq_show()
1710 struct kmemleak_object *object; in dump_str_object_info() local
1715 object = find_and_get_object(addr, 0); in dump_str_object_info()
1716 if (!object) { in dump_str_object_info()
1721 raw_spin_lock_irqsave(&object->lock, flags); in dump_str_object_info()
1722 dump_object_info(object); in dump_str_object_info()
1723 raw_spin_unlock_irqrestore(&object->lock, flags); in dump_str_object_info()
1725 put_object(object); in dump_str_object_info()
1737 struct kmemleak_object *object; in kmemleak_clear() local
1741 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_clear()
1742 raw_spin_lock_irqsave(&object->lock, flags); in kmemleak_clear()
1743 if ((object->flags & OBJECT_REPORTED) && in kmemleak_clear()
1744 unreferenced_object(object)) in kmemleak_clear()
1745 __paint_it(object, KMEMLEAK_GREY); in kmemleak_clear()
1746 raw_spin_unlock_irqrestore(&object->lock, flags); in kmemleak_clear()
1855 struct kmemleak_object *object, *tmp; in __kmemleak_do_cleanup() local
1861 list_for_each_entry_safe(object, tmp, &object_list, object_list) { in __kmemleak_do_cleanup()
1862 __remove_object(object); in __kmemleak_do_cleanup()
1863 __delete_object(object); in __kmemleak_do_cleanup()