[php-src] Issue #14338: segmentation fault in spl_perform_autoload

Issue: https://github.com/php/php-src/issues/14338 Author: apetrosyan1613 ### Description Sometimes php-fpm terminates with a segmentation fault error, which leads to 502 HTTP errors. We use Laravel 10 and ubuntu:focal docker image The issue is flaky. Resulted in this output: ``` Reading symbols from /usr/sbin/php-fpm8.2... Reading symbols from /usr/lib/debug/.build-id/9b/5727e8bc99ab2a6361bd4941f09d751e0d402c.debug... [New LWP 47958] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `php-fpm: pool www '. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000055b6b28e8fdc in zif_strpos (execute_data=0x7f0b54016ac0, return_value=0x7f0b54016aa0) at ./ext/standard/string.c:1798 1798 ./ext/standard/string.c: No such file or directory. (gdb) bt #0 0x000055b6b28e8fdc in zif_strpos (execute_data=0x7f0b54016ac0, return_value=0x7f0b54016aa0) at ./ext/standard/string.c:1798 #1 0x000055b6b29f60e3 in ZEND_DO_FCALL_BY_NAME_SPEC_RETVAL_USED_HANDLER () at ./Zend/zend_vm_execute.h:1637 #2 execute_ex (ex=0x7f0b54016ac0) at ./Zend/zend_vm_execute.h:56099 #3 0x000055b6b297790a in zend_call_function (fci_cache=<optimized out>, fci=<optimized out>) at ./Zend/zend_execute_API.c:949 #4 zend_call_function (fci=<optimized out>, fci_cache=<optimized out>) at ./Zend/zend_execute_API.c:749 #5 0x000055b6b2977d7d in zend_call_known_function (fn=0x55b6b50c67b8, object=<optimized out>, called_scope=<optimized out>, retval_ptr=retval_ptr@entry=0x0, param_count=param_count@entry=1, params=params@entry=0x7fff631831f0, named_params=0x0) at ./Zend/zend_execute_API.c:1043 #6 0x000055b6b28707c7 in spl_perform_autoload (class_name=0x55b6b4d50998, lc_name=0x7f0b5407c500) at ./ext/spl/php_spl.c:445 #7 0x000055b6b2976b4d in zend_lookup_class_ex (name=<optimized out>, key=key@entry=0x0, flags=flags@entry=0) at ./Zend/zend_execute_API.c:1213 #8 0x000055b6b2976d6d in zend_lookup_class (name=<optimized out>) at ./Zend/zend_execute_API.c:1236 #9 0x000055b6b29a220d in class_exists_impl (return_value=0x7f0b540167b0, skip_flags=0, flags=9, execute_data=0x7f0b540167c0) at ./Zend/zend_builtin_functions.c:992 #10 zif_interface_exists (execute_data=0x7f0b540167c0, return_value=0x7f0b540167b0) at ./Zend/zend_builtin_functions.c:1013 #11 0x000055b6b29f60e3 in ZEND_DO_FCALL_BY_NAME_SPEC_RETVAL_USED_HANDLER () at ./Zend/zend_vm_execute.h:1637 #12 execute_ex (ex=0x7f0b54016ac0) at ./Zend/zend_vm_execute.h:56099 #13 0x000055b6b297790a in zend_call_function (fci_cache=<optimized out>, fci=<optimized out>) at ./Zend/zend_execute_API.c:949 #14 zend_call_function (fci=<optimized out>, fci_cache=<optimized out>) at ./Zend/zend_execute_API.c:749 #15 0x000055b6b2977d7d in zend_call_known_function (fn=0x55b6b50c67b8, object=<optimized out>, called_scope=<optimized out>, retval_ptr=retval_ptr@entry=0x0, param_count=param_count@entry=1, params=params@entry=0x7fff63183510, named_params=0x0) at ./Zend/zend_execute_API.c:1043 #16 0x000055b6b28707c7 in spl_perform_autoload (class_name=0x55b6b4b3fce8, lc_name=0x55b6b4d50728) at ./ext/spl/php_spl.c:445 #17 0x000055b6b2976b4d in zend_lookup_class_ex (name=name@entry=0x55b6b4b3fce8, key=0x55b6b4d50728, flags=flags@entry=6) at ./Zend/zend_execute_API.c:1213 #18 0x000055b6b2978136 in zend_fetch_class_by_name (class_name=0x55b6b4b3fce8, key=<optimized out>, fetch_type=fetch_type@entry=6) at ./Zend/zend_execute_API.c:1716 #19 0x000055b6b2a20052 in zend_do_link_class (ce=ce@entry=0x55b6b5660220, lc_parent_name=lc_parent_name@entry=0x0, key=0x55b6b4d46cb8) at ./Zend/zend_inheritance.c:2878 #20 0x000055b6b2961343 in zend_bind_class_in_slot (class_table_slot=<optimized out>, lcname=0x55b6b5665d18, lc_parent_name=0x0) at ./Zend/zend_compile.c:1124 #21 0x000055b6b296143c in do_bind_class (lcname=0x55b6b5665d18, lc_parent_name=0x0) at ./Zend/zend_compile.c:1158 ``` But I expected this output instead: No errors returned by php-fpm ### PHP Version PHP 8.2.18, PHP 8.2.19 ### Operating System Ubuntu 20.04 (docker), Amazon Linux 2 on EKS nodes