[php-src] Issue #9361: Segmentation fault on script exit

Issue: https://github.com/php/php-src/issues/9361 Author: dvaeversted ### Description After updating from PHP 8.0.X to 8.1.9, we started experiencing segfaults on a memory heavy script. We run it using the following command line: php -d memory_limit=8192M cronscript.php I was unable to construct a reproducer at this time, but no extensions are used, it is a script that reads in 3 different large files, does some calculations through a bunch of loops, and will crash with a segfault at the end of script execution (either on exit; or just when no more lines are left in the script). We tested it on latest 8.2.0beta3, which exhibits the same problem, backtrace included as well. From gdb i grabbed the following backtraces. PHP 8.1.9: ``` Program received signal SIGSEGV, Segmentation fault. 0x00005555559825f8 in zend_set_memory_limit (memory_limit=8589934592) at /usr/src/debug/php-8.1.9/Zend/zend_alloc.c:2671 2671 heap->cached_chunks = p->next; (gdb) bt #0 0x00005555559825f8 in zend_set_memory_limit (memory_limit=8589934592) at /usr/src/debug/php-8.1.9/Zend/zend_alloc.c:2671 #1 0x00005555559465c0 in php_request_shutdown (dummy=dummy@entry=0x0) at /usr/src/debug/php-8.1.9/main/main.c:1879 #2 0x0000555555a8f2ae in do_cli (argc=4, argv=0x555555f75190) at /usr/src/debug/php-8.1.9/sapi/cli/php_cli.c:1135 #3 0x000055555578e2a5 in main (argc=4, argv=0x555555f75190) at /usr/src/debug/php-8.1.9/sapi/cli/php_cli.c:1367 ``` PHP 8.2.0beta3: ``` Program received signal SIGSEGV, Segmentation fault. 0x00005555559929f8 in zend_set_memory_limit (memory_limit=8589934592) at /usr/src/debug/php-8.2.0beta3/Zend/zend_alloc.c:2692 2692 heap->cached_chunks = p->next; Missing separate debuginfos, use: debuginfo-install gd3php-2.3.3-4.el7.remi.x86_64 (gdb) bt #0 0x00005555559929f8 in zend_set_memory_limit (memory_limit=8589934592) at /usr/src/debug/php-8.2.0beta3/Zend/zend_alloc.c:2692 #1 0x0000555555956260 in php_request_shutdown (dummy=dummy@entry=0x0) at /usr/src/debug/php-8.2.0beta3/main/main.c:1890 #2 0x0000555555aa1e96 in do_cli (argc=4, argv=0x555555f75190) at /usr/src/debug/php-8.2.0beta3/sapi/cli/php_cli.c:1135 #3 0x000055555578f9bc in main (argc=4, argv=0x555555f75190) at /usr/src/debug/php-8.2.0beta3/sapi/cli/php_cli.c:1333 ``` ### PHP Version PHP 8.1.9 ### Operating System Centos 7, AlmaLinux 8