Lines Matching refs:object
281 struct kmemleak_object *object) in hex_dump_object() argument
283 const u8 *ptr = (const u8 *)object->pointer; in hex_dump_object()
287 len = min_t(size_t, object->size, HEX_MAX_LINES * HEX_ROW_SIZE); in hex_dump_object()
306 static bool color_white(const struct kmemleak_object *object) in color_white() argument
308 return object->count != KMEMLEAK_BLACK && in color_white()
309 object->count < object->min_count; in color_white()
312 static bool color_gray(const struct kmemleak_object *object) in color_gray() argument
314 return object->min_count != KMEMLEAK_BLACK && in color_gray()
315 object->count >= object->min_count; in color_gray()
323 static bool unreferenced_object(struct kmemleak_object *object) in unreferenced_object() argument
325 return (color_white(object) && object->flags & OBJECT_ALLOCATED) && in unreferenced_object()
326 time_before_eq(object->jiffies + jiffies_min_age, in unreferenced_object()
335 struct kmemleak_object *object) in print_unreferenced() argument
338 unsigned int msecs_age = jiffies_to_msecs(jiffies - object->jiffies); in print_unreferenced()
341 object->pointer, object->size); in print_unreferenced()
343 object->comm, object->pid, object->jiffies, in print_unreferenced()
345 hex_dump_object(seq, object); in print_unreferenced()
348 for (i = 0; i < object->trace_len; i++) { in print_unreferenced()
349 void *ptr = (void *)object->trace[i]; in print_unreferenced()
359 static void dump_object_info(struct kmemleak_object *object) in dump_object_info() argument
362 object->pointer, object->size); in dump_object_info()
364 object->comm, object->pid, object->jiffies); in dump_object_info()
365 pr_notice(" min_count = %d\n", object->min_count); in dump_object_info()
366 pr_notice(" count = %d\n", object->count); in dump_object_info()
367 pr_notice(" flags = 0x%x\n", object->flags); in dump_object_info()
368 pr_notice(" checksum = %u\n", object->checksum); in dump_object_info()
370 stack_trace_print(object->trace, object->trace_len, 4); in dump_object_info()
384 struct kmemleak_object *object = in lookup_object() local
386 if (ptr < object->pointer) in lookup_object()
387 rb = object->rb_node.rb_left; in lookup_object()
388 else if (object->pointer + object->size <= ptr) in lookup_object()
389 rb = object->rb_node.rb_right; in lookup_object()
390 else if (object->pointer == ptr || alias) in lookup_object()
391 return object; in lookup_object()
395 dump_object_info(object); in lookup_object()
408 static int get_object(struct kmemleak_object *object) in get_object() argument
410 return atomic_inc_not_zero(&object->use_count); in get_object()
419 struct kmemleak_object *object; in mem_pool_alloc() local
423 object = kmem_cache_alloc(object_cache, gfp_kmemleak_mask(gfp)); in mem_pool_alloc()
424 if (object) in mem_pool_alloc()
425 return object; in mem_pool_alloc()
430 object = list_first_entry_or_null(&mem_pool_free_list, in mem_pool_alloc()
431 typeof(*object), object_list); in mem_pool_alloc()
432 if (object) in mem_pool_alloc()
433 list_del(&object->object_list); in mem_pool_alloc()
435 object = &mem_pool[--mem_pool_free_count]; in mem_pool_alloc()
440 return object; in mem_pool_alloc()
446 static void mem_pool_free(struct kmemleak_object *object) in mem_pool_free() argument
450 if (object < mem_pool || object >= mem_pool + ARRAY_SIZE(mem_pool)) { in mem_pool_free()
451 kmem_cache_free(object_cache, object); in mem_pool_free()
457 list_add(&object->object_list, &mem_pool_free_list); in mem_pool_free()
468 struct kmemleak_object *object = in free_object_rcu() local
475 hlist_for_each_entry_safe(area, tmp, &object->area_list, node) { in free_object_rcu()
479 mem_pool_free(object); in free_object_rcu()
489 static void put_object(struct kmemleak_object *object) in put_object() argument
491 if (!atomic_dec_and_test(&object->use_count)) in put_object()
495 WARN_ON(object->flags & OBJECT_ALLOCATED); in put_object()
503 call_rcu(&object->rcu, free_object_rcu); in put_object()
505 free_object_rcu(&object->rcu); in put_object()
514 struct kmemleak_object *object; in find_and_get_object() local
518 object = lookup_object(ptr, alias); in find_and_get_object()
522 if (object && !get_object(object)) in find_and_get_object()
523 object = NULL; in find_and_get_object()
526 return object; in find_and_get_object()
533 static void __remove_object(struct kmemleak_object *object) in __remove_object() argument
535 rb_erase(&object->rb_node, &object_tree_root); in __remove_object()
536 list_del_rcu(&object->object_list); in __remove_object()
547 struct kmemleak_object *object; in find_and_remove_object() local
550 object = lookup_object(ptr, alias); in find_and_remove_object()
551 if (object) in find_and_remove_object()
552 __remove_object(object); in find_and_remove_object()
555 return object; in find_and_remove_object()
574 struct kmemleak_object *object, *parent; in create_object() local
578 object = mem_pool_alloc(gfp); in create_object()
579 if (!object) { in create_object()
585 INIT_LIST_HEAD(&object->object_list); in create_object()
586 INIT_LIST_HEAD(&object->gray_list); in create_object()
587 INIT_HLIST_HEAD(&object->area_list); in create_object()
588 spin_lock_init(&object->lock); in create_object()
589 atomic_set(&object->use_count, 1); in create_object()
590 object->flags = OBJECT_ALLOCATED; in create_object()
591 object->pointer = ptr; in create_object()
592 object->size = size; in create_object()
593 object->excess_ref = 0; in create_object()
594 object->min_count = min_count; in create_object()
595 object->count = 0; /* white color initially */ in create_object()
596 object->jiffies = jiffies; in create_object()
597 object->checksum = 0; in create_object()
601 object->pid = 0; in create_object()
602 strncpy(object->comm, "hardirq", sizeof(object->comm)); in create_object()
604 object->pid = 0; in create_object()
605 strncpy(object->comm, "softirq", sizeof(object->comm)); in create_object()
607 object->pid = current->pid; in create_object()
614 strncpy(object->comm, current->comm, sizeof(object->comm)); in create_object()
618 object->trace_len = __save_stack_trace(object->trace); in create_object()
642 kmem_cache_free(object_cache, object); in create_object()
643 object = NULL; in create_object()
647 rb_link_node(&object->rb_node, rb_parent, link); in create_object()
648 rb_insert_color(&object->rb_node, &object_tree_root); in create_object()
650 list_add_tail_rcu(&object->object_list, &object_list); in create_object()
653 return object; in create_object()
659 static void __delete_object(struct kmemleak_object *object) in __delete_object() argument
663 WARN_ON(!(object->flags & OBJECT_ALLOCATED)); in __delete_object()
664 WARN_ON(atomic_read(&object->use_count) < 1); in __delete_object()
670 spin_lock_irqsave(&object->lock, flags); in __delete_object()
671 object->flags &= ~OBJECT_ALLOCATED; in __delete_object()
672 spin_unlock_irqrestore(&object->lock, flags); in __delete_object()
673 put_object(object); in __delete_object()
682 struct kmemleak_object *object; in delete_object_full() local
684 object = find_and_remove_object(ptr, 0); in delete_object_full()
685 if (!object) { in delete_object_full()
692 __delete_object(object); in delete_object_full()
702 struct kmemleak_object *object; in delete_object_part() local
705 object = find_and_remove_object(ptr, 1); in delete_object_part()
706 if (!object) { in delete_object_part()
719 start = object->pointer; in delete_object_part()
720 end = object->pointer + object->size; in delete_object_part()
722 create_object(start, ptr - start, object->min_count, in delete_object_part()
725 create_object(ptr + size, end - ptr - size, object->min_count, in delete_object_part()
728 __delete_object(object); in delete_object_part()
731 static void __paint_it(struct kmemleak_object *object, int color) in __paint_it() argument
733 object->min_count = color; in __paint_it()
735 object->flags |= OBJECT_NO_SCAN; in __paint_it()
738 static void paint_it(struct kmemleak_object *object, int color) in paint_it() argument
742 spin_lock_irqsave(&object->lock, flags); in paint_it()
743 __paint_it(object, color); in paint_it()
744 spin_unlock_irqrestore(&object->lock, flags); in paint_it()
749 struct kmemleak_object *object; in paint_ptr() local
751 object = find_and_get_object(ptr, 0); in paint_ptr()
752 if (!object) { in paint_ptr()
759 paint_it(object, color); in paint_ptr()
760 put_object(object); in paint_ptr()
788 struct kmemleak_object *object; in add_scan_area() local
791 object = find_and_get_object(ptr, 1); in add_scan_area()
792 if (!object) { in add_scan_area()
801 spin_lock_irqsave(&object->lock, flags); in add_scan_area()
805 object->flags |= OBJECT_FULL_SCAN; in add_scan_area()
809 size = object->pointer + object->size - ptr; in add_scan_area()
810 } else if (ptr + size > object->pointer + object->size) { in add_scan_area()
812 dump_object_info(object); in add_scan_area()
821 hlist_add_head(&area->node, &object->area_list); in add_scan_area()
823 spin_unlock_irqrestore(&object->lock, flags); in add_scan_area()
824 put_object(object); in add_scan_area()
836 struct kmemleak_object *object; in object_set_excess_ref() local
838 object = find_and_get_object(ptr, 0); in object_set_excess_ref()
839 if (!object) { in object_set_excess_ref()
845 spin_lock_irqsave(&object->lock, flags); in object_set_excess_ref()
846 object->excess_ref = excess_ref; in object_set_excess_ref()
847 spin_unlock_irqrestore(&object->lock, flags); in object_set_excess_ref()
848 put_object(object); in object_set_excess_ref()
859 struct kmemleak_object *object; in object_no_scan() local
861 object = find_and_get_object(ptr, 0); in object_no_scan()
862 if (!object) { in object_no_scan()
867 spin_lock_irqsave(&object->lock, flags); in object_no_scan()
868 object->flags |= OBJECT_NO_SCAN; in object_no_scan()
869 spin_unlock_irqrestore(&object->lock, flags); in object_no_scan()
870 put_object(object); in object_no_scan()
1012 struct kmemleak_object *object; in kmemleak_update_trace() local
1020 object = find_and_get_object((unsigned long)ptr, 1); in kmemleak_update_trace()
1021 if (!object) { in kmemleak_update_trace()
1029 spin_lock_irqsave(&object->lock, flags); in kmemleak_update_trace()
1030 object->trace_len = __save_stack_trace(object->trace); in kmemleak_update_trace()
1031 spin_unlock_irqrestore(&object->lock, flags); in kmemleak_update_trace()
1033 put_object(object); in kmemleak_update_trace()
1167 static bool update_checksum(struct kmemleak_object *object) in update_checksum() argument
1169 u32 old_csum = object->checksum; in update_checksum()
1172 object->checksum = crc32(0, (void *)object->pointer, object->size); in update_checksum()
1175 return object->checksum != old_csum; in update_checksum()
1181 static void update_refs(struct kmemleak_object *object) in update_refs() argument
1183 if (!color_white(object)) { in update_refs()
1194 object->count++; in update_refs()
1195 if (color_gray(object)) { in update_refs()
1197 WARN_ON(!get_object(object)); in update_refs()
1198 list_add_tail(&object->gray_list, &gray_list); in update_refs()
1238 struct kmemleak_object *object; in scan_block() local
1259 object = lookup_object(pointer, 1); in scan_block()
1260 if (!object) in scan_block()
1262 if (object == scanned) in scan_block()
1271 spin_lock_nested(&object->lock, SINGLE_DEPTH_NESTING); in scan_block()
1273 if (color_gray(object)) { in scan_block()
1274 excess_ref = object->excess_ref; in scan_block()
1278 update_refs(object); in scan_block()
1280 spin_unlock(&object->lock); in scan_block()
1283 object = lookup_object(excess_ref, 0); in scan_block()
1284 if (!object) in scan_block()
1286 if (object == scanned) in scan_block()
1289 spin_lock_nested(&object->lock, SINGLE_DEPTH_NESTING); in scan_block()
1290 update_refs(object); in scan_block()
1291 spin_unlock(&object->lock); in scan_block()
1318 static void scan_object(struct kmemleak_object *object) in scan_object() argument
1327 spin_lock_irqsave(&object->lock, flags); in scan_object()
1328 if (object->flags & OBJECT_NO_SCAN) in scan_object()
1330 if (!(object->flags & OBJECT_ALLOCATED)) in scan_object()
1333 if (hlist_empty(&object->area_list) || in scan_object()
1334 object->flags & OBJECT_FULL_SCAN) { in scan_object()
1335 void *start = (void *)object->pointer; in scan_object()
1336 void *end = (void *)(object->pointer + object->size); in scan_object()
1341 scan_block(start, next, object); in scan_object()
1347 spin_unlock_irqrestore(&object->lock, flags); in scan_object()
1349 spin_lock_irqsave(&object->lock, flags); in scan_object()
1350 } while (object->flags & OBJECT_ALLOCATED); in scan_object()
1352 hlist_for_each_entry(area, &object->area_list, node) in scan_object()
1355 object); in scan_object()
1357 spin_unlock_irqrestore(&object->lock, flags); in scan_object()
1366 struct kmemleak_object *object, *tmp; in scan_gray_list() local
1373 object = list_entry(gray_list.next, typeof(*object), gray_list); in scan_gray_list()
1374 while (&object->gray_list != &gray_list) { in scan_gray_list()
1379 scan_object(object); in scan_gray_list()
1381 tmp = list_entry(object->gray_list.next, typeof(*object), in scan_gray_list()
1385 list_del(&object->gray_list); in scan_gray_list()
1386 put_object(object); in scan_gray_list()
1388 object = tmp; in scan_gray_list()
1401 struct kmemleak_object *object; in kmemleak_scan() local
1409 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_scan()
1410 spin_lock_irqsave(&object->lock, flags); in kmemleak_scan()
1416 if (atomic_read(&object->use_count) > 1) { in kmemleak_scan()
1418 atomic_read(&object->use_count)); in kmemleak_scan()
1419 dump_object_info(object); in kmemleak_scan()
1423 object->count = 0; in kmemleak_scan()
1424 if (color_gray(object) && get_object(object)) in kmemleak_scan()
1425 list_add_tail(&object->gray_list, &gray_list); in kmemleak_scan()
1427 spin_unlock_irqrestore(&object->lock, flags); in kmemleak_scan()
1494 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_scan()
1495 spin_lock_irqsave(&object->lock, flags); in kmemleak_scan()
1496 if (color_white(object) && (object->flags & OBJECT_ALLOCATED) in kmemleak_scan()
1497 && update_checksum(object) && get_object(object)) { in kmemleak_scan()
1499 object->count = object->min_count; in kmemleak_scan()
1500 list_add_tail(&object->gray_list, &gray_list); in kmemleak_scan()
1502 spin_unlock_irqrestore(&object->lock, flags); in kmemleak_scan()
1521 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_scan()
1522 spin_lock_irqsave(&object->lock, flags); in kmemleak_scan()
1523 if (unreferenced_object(object) && in kmemleak_scan()
1524 !(object->flags & OBJECT_REPORTED)) { in kmemleak_scan()
1525 object->flags |= OBJECT_REPORTED; in kmemleak_scan()
1528 print_unreferenced(NULL, object); in kmemleak_scan()
1532 spin_unlock_irqrestore(&object->lock, flags); in kmemleak_scan()
1616 struct kmemleak_object *object; in kmemleak_seq_start() local
1625 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_seq_start()
1628 if (get_object(object)) in kmemleak_seq_start()
1631 object = NULL; in kmemleak_seq_start()
1633 return object; in kmemleak_seq_start()
1681 struct kmemleak_object *object = v; in kmemleak_seq_show() local
1684 spin_lock_irqsave(&object->lock, flags); in kmemleak_seq_show()
1685 if ((object->flags & OBJECT_REPORTED) && unreferenced_object(object)) in kmemleak_seq_show()
1686 print_unreferenced(seq, object); in kmemleak_seq_show()
1687 spin_unlock_irqrestore(&object->lock, flags); in kmemleak_seq_show()
1706 struct kmemleak_object *object; in dump_str_object_info() local
1711 object = find_and_get_object(addr, 0); in dump_str_object_info()
1712 if (!object) { in dump_str_object_info()
1717 spin_lock_irqsave(&object->lock, flags); in dump_str_object_info()
1718 dump_object_info(object); in dump_str_object_info()
1719 spin_unlock_irqrestore(&object->lock, flags); in dump_str_object_info()
1721 put_object(object); in dump_str_object_info()
1733 struct kmemleak_object *object; in kmemleak_clear() local
1737 list_for_each_entry_rcu(object, &object_list, object_list) { in kmemleak_clear()
1738 spin_lock_irqsave(&object->lock, flags); in kmemleak_clear()
1739 if ((object->flags & OBJECT_REPORTED) && in kmemleak_clear()
1740 unreferenced_object(object)) in kmemleak_clear()
1741 __paint_it(object, KMEMLEAK_GREY); in kmemleak_clear()
1742 spin_unlock_irqrestore(&object->lock, flags); in kmemleak_clear()
1845 struct kmemleak_object *object, *tmp; in __kmemleak_do_cleanup() local
1851 list_for_each_entry_safe(object, tmp, &object_list, object_list) { in __kmemleak_do_cleanup()
1852 __remove_object(object); in __kmemleak_do_cleanup()
1853 __delete_object(object); in __kmemleak_do_cleanup()