[php-src] Issue #9801: Crash when memory limit is exceeded during generator initialization

Issue: https://github.com/php/php-src/issues/9801 Author: arnaud-lb ### Description The following code: ```php <?php function a() { yield from a(); } foreach(a() as $v); ``` Resulted in this output: ``` Segmentation fault ``` But I expected this output instead: ``` Fatal error: Allowed memory size of 134217728 bytes exhausted [...] ``` Gdb: ``` (gdb) r Program received signal SIGSEGV, Segmentation fault. zend_get_executed_lineno () at Zend/zend_execute_API.c:647 647 return ex->opline->lineno; (gdb) bt #0 zend_get_executed_lineno () at Zend/zend_execute_API.c:647 #1 0x000055555599b3e8 in get_filename_lineno (type=1, filename=0x7fffffffa9e8, lineno=0x7fffffffa9e4) at Zend/zend.c:1513 #2 0x000055555599b8c3 in zend_error_noreturn (type=1, format=0x555555ce2278 "Allowed memory size of %zu bytes exhausted at %s:%d (tried to allocate %zu bytes)") at Zend/zend.c:1588 #3 0x00005555559556ff in zend_mm_safe_error (heap=0x7ffff7a00040, format=0x555555ce2278 "Allowed memory size of %zu bytes exhausted at %s:%d (tried to allocate %zu bytes)", limit=134217728, filename=0x555555cfdaa8 "Zend/zend_generators.c", lineno=408, size=320) at Zend/zend_alloc.c:383 #4 0x0000555555956659 in zend_mm_alloc_pages (heap=0x7ffff7a00040, pages_count=5, size=320, __zend_filename=0x555555cfdaa8 "Zend/zend_generators.c", __zend_lineno=408, __zend_orig_filename=0x0, __zend_orig_lineno=0) at Zend/zend_alloc.c:977 #5 0x0000555555956dbc in zend_mm_alloc_small_slow (heap=0x7ffff7a00040, bin_num=16, __zend_filename=0x555555cfdaa8 "Zend/zend_generators.c", __zend_lineno=408, __zend_orig_filename=0x0, __zend_orig_lineno=0) at Zend/zend_alloc.c:1215 #6 0x000055555595709a in zend_mm_alloc_small (heap=0x7ffff7a00040, bin_num=16, __zend_filename=0x555555cfdaa8 "Zend/zend_generators.c", __zend_lineno=408, __zend_orig_filename=0x0, __zend_orig_lineno=0) at Zend/zend_alloc.c:1279 #7 0x0000555555957309 in zend_mm_alloc_heap (heap=0x7ffff7a00040, size=304, __zend_filename=0x555555cfdaa8 "Zend/zend_generators.c", __zend_lineno=408, __zend_orig_filename=0x0, __zend_orig_lineno=0) at Zend/zend_alloc.c:1347 #8 0x000055555595a13c in _emalloc (size=272, __zend_filename=0x555555cfdaa8 "Zend/zend_generators.c", __zend_lineno=408, __zend_orig_filename=0x0, __zend_orig_lineno=0) at Zend/zend_alloc.c:2561 #9 0x0000555555a7ec78 in zend_generator_create (class_type=0x5555562cafd0) at Zend/zend_generators.c:408 #10 0x00005555559a41ad in _object_and_properties_init (arg=0x7ffff39fb550, class_type=0x5555562cafd0, properties=0x0) at Zend/zend_API.c:1704 #11 0x00005555559a4223 in object_init_ex (arg=0x7ffff39fb550, class_type=0x5555562cafd0) at Zend/zend_API.c:1718 #12 0x00005555559e0819 in ZEND_GENERATOR_CREATE_SPEC_HANDLER () at Zend/zend_vm_execute.h:2117 #13 0x0000555555a5768c in execute_ex (ex=0x7ffff39fb500) at Zend/zend_vm_execute.h:56023 #14 0x0000555555a7fcf4 in zend_generator_resume (orig_generator=0x7ffff7a8f140) at Zend/zend_generators.c:766 #15 0x0000555555a7ffb9 in zend_generator_ensure_initialized (generator=0x7ffff7a8f140) at Zend/zend_generators.c:822 #16 0x0000555555a7fff0 in zend_generator_rewind (generator=0x7ffff7a8f140) at Zend/zend_generators.c:830 #17 0x0000555555a80e86 in zend_generator_iterator_rewind (iterator=0x7ffff7a70100) at Zend/zend_generators.c:1077 #18 0x00005555559da8ca in zend_fe_reset_iterator (array_ptr=0x7ffff7a19080, by_ref=0) at Zend/zend_execute.c:4645 #19 0x0000555555a11935 in ZEND_FE_RESET_R_SPEC_VAR_HANDLER () at Zend/zend_vm_execute.h:21889 #20 0x0000555555a5a378 in execute_ex (ex=0x7ffff7a19020) at Zend/zend_vm_execute.h:58200 #21 0x0000555555a5cdee in zend_execute (op_array=0x7ffff7a8f000, return_value=0x0) at Zend/zend_vm_execute.h:60343 #22 0x000055555599c3c9 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at Zend/zend.c:1780 #23 0x00005555558f42d1 in php_execute_script (primary_file=0x7fffffffca30) at main/main.c:2477 #24 0x0000555555b1c93b in do_cli (argc=2, argv=0x555556222810) at sapi/cli/php_cli.c:964 #25 0x0000555555b1d634 in main (argc=2, argv=0x555556222810) at sapi/cli/php_cli.c:1333 (gdb) list 642 if (ex) { 643 if (EG(exception) && ex->opline->opcode == ZEND_HANDLE_EXCEPTION && 644 ex->opline->lineno == 0 && EG(opline_before_exception)) { 645 return EG(opline_before_exception)->lineno; 646 } 647 return ex->opline->lineno; 648 } else { 649 return 0; 650 } 651 } (gdb) p ex->opline $1 = (const zend_op *) 0x0 ``` ### PHP Version PHP 8.0 f702f87f70e9c2553171bd31ba13f0dc1974478d ### Operating System _No response_