stack overflow in JIT

Bắt đầu bằng cách tái hiện stack overflow với chương trình PHP và lệnh JIT được cung cấp. Đọc Zend/zend_objects.c quanh dòng 77 và Zend/zend_objects_API.c quanh dòng 193, nơi sanitizer trace lặp lại. Hoàn thành khi reproducer không còn bị dừng do stack overflow và hành vi hủy đối tượng được bao phủ bởi một regression test.

Description

The following code:

<?php
class N { public $n; }
$o=null;
for($i=0;$i<1000000;$i++){ $x=new N; $x->n=$o; $o=$x; }
$o=null;

Resulted in this output:

_store_del /home/php-src/Zend/zend_objects_API.c:193
    #344 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #345 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #346 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #347 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #348 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #349 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #350 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #351 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #352 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #353 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #354 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #355 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #356 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #357 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #358 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #359 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #360 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #361 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #362 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #363 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #364 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #365 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #366 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #367 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #368 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #369 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94
    #370 0x55ed1181c2b8 in zend_objects_store_del /home/php-src/Zend/zend_objects_API.c:193
    #371 0x55ed1181d414 in zend_object_dtor_property /home/php-src/Zend/zend_objects.c:64
    #372 0x55ed1181d414 in zend_object_std_dtor /home/php-src/Zend/zend_objects.c:94

SUMMARY: AddressSanitizer: stack-overflow /home/php-src/Zend/zend_objects.c:77 in zend_object_std_dtor
==34==ABORTING

USE_ZEND_ALLOC=0 .php -d "opcache.enable=1" -d "opcache.enable_cli=1" -d "opcache.jit=tracing" -d "opcache.jit_hot_loop=1" -d "opcache.jit_hot_func=1" poc.php

PHP Version

8.6.0

Operating System

ubuntu 22.04