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Segmentation fault (stack overflow in phpdbg) in main/spprintf.c #16041

Open
YuanchengJiang opened this issue Sep 25, 2024 · 2 comments · May be fixed by #16055
Open

Segmentation fault (stack overflow in phpdbg) in main/spprintf.c #16041

YuanchengJiang opened this issue Sep 25, 2024 · 2 comments · May be fixed by #16055
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Bug SAPI: phpdbg Status: Verified

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@YuanchengJiang
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Description

The following code:

<?php
final class StreamWrapper
{
    public $context;
}
$fusion = $context;
register_shutdown_function(function () {
    global $shutdown;
    $shutdown = true;
});
class Cycle {
    public $self;
    public function __construct() {
        $this->self = $this;
    }
}
class Canary {
    public $self;
    public function __construct() {
        $this->self = $fusion;
    }
    public function __destruct() {
        global $shutdown;
        if (!$shutdown) {
            work();
        }
    }
}
function work() {
    global $objs, $defaultThreshold;
    new Canary();
    // Create some collectable garbage so the next run will not adjust
    // threshold
    for ($i = 0; $i < 100; $i++) {
        new Cycle();
    }
    // Add potential garbage to buffer
    foreach (array_slice($objs, 0, $defaultThreshold) as $obj) {
        $o = $obj;
    }
}
work();
?>

To reproduce:

phpdbg test.php
> r

PHP Version

PHP 8.4.0-dev

Operating System

ubuntu 22.04
@DanielEScherzer
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Contributor

DanielEScherzer commented Sep 25, 2024 •
edited
Loading

Minimal reproduction (slightly different stack overflow trace but should be much clearer to reason with)

<?php

class Canary {
    public $self;
    public function __construct() {
        $this->self = $fusion;
    }
    public function __destruct() {
        new Canary();
    }
}
new Canary();
phpdbg output 
...
[PHP Warning:  Undefined variable $fusion in /var/www/html/test.php on line 6]
[PHP Warning:  Undefined variable $fusion in /var/www/html/test.php on line 6]
[PHP Warning:  Undefined variable $fusion in /var/www/html/test.php on line 6]
AddressSanitizer:DEADLYSIGNAL
=================================================================
==81874==ERROR: AddressSanitizer: stack-overflow on address 0x7ffebe25ff58 (pc 0x7f6573b4c5fa bp 0x7ffebe260800 sp 0x7ffebe25ff50 T0)
    #0 0x7f6573b4c5fa in printf_common ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors_format.inc:495
    #1 0x7f6573b5f215 in __interceptor_vasprintf ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:1693
    #2 0x55cce073dd75 in phpdbg_vprint /usr/src/php/sapi/phpdbg/phpdbg_out.c:131
    #3 0x55cce073e839 in phpdbg_print /usr/src/php/sapi/phpdbg/phpdbg_out.c:203
    #4 0x55cce079ba74 in php_sapi_phpdbg_log_message /usr/src/php/sapi/phpdbg/phpdbg.c:750
    #5 0x55ccdfbc803b in php_log_err_with_severity /usr/src/php/main/main.c:923
    #6 0x55ccdfbcaf88 in php_error_cb /usr/src/php/main/main.c:1391
    #7 0x55cce06d0979 in zend_error_zstr_at /usr/src/php/Zend/zend.c:1489
    #8 0x55cce06d2c38 in zend_error_va_list /usr/src/php/Zend/zend.c:1591
    #9 0x55cce06d37ed in zend_error_unchecked /usr/src/php/Zend/zend.c:1665
    #10 0x55cce0102e07 in zval_undefined_cv /usr/src/php/Zend/zend_execute.c:279
    #11 0x55cce0103432 in _get_zval_ptr_cv_BP_VAR_R /usr/src/php/Zend/zend_execute.c:352
    #12 0x55cce033a6e9 in ZEND_ASSIGN_OBJ_SPEC_UNUSED_CONST_OP_DATA_CV_HANDLER /usr/src/php/Zend/zend_vm_execute.h:34493
    #13 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #14 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #15 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #16 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #17 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #18 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #19 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #20 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #21 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #22 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #23 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #24 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #25 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #26 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #27 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #28 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #29 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #30 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #31 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #32 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #33 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #34 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #35 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #36 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #37 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #38 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #39 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #40 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #41 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #42 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #43 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #44 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #45 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #46 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #47 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #48 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #49 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #50 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #51 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #52 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #53 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #54 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #55 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #56 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #57 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #58 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #59 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #60 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #61 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #62 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #63 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #64 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #65 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #66 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #67 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #68 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #69 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #70 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #71 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #72 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #73 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #74 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #75 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #76 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #77 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #78 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #79 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #80 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #81 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #82 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #83 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #84 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #85 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #86 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #87 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #88 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #89 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #90 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #91 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #92 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #93 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #94 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #95 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #96 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #97 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #98 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #99 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #100 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #101 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #102 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #103 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #104 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #105 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #106 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #107 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #108 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #109 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #110 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #111 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #112 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #113 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #114 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #115 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #116 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #117 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #118 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #119 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #120 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #121 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #122 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #123 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #124 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #125 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #126 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #127 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #128 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #129 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #130 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #131 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #132 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #133 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #134 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #135 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #136 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #137 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #138 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #139 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #140 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #141 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #142 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #143 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #144 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #145 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #146 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #147 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #148 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #149 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #150 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #151 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #152 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #153 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #154 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #155 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #156 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #157 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #158 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #159 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #160 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #161 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #162 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #163 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #164 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #165 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #166 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #167 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #168 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #169 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #170 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #171 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #172 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #173 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #174 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #175 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #176 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #177 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #178 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #179 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #180 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #181 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #182 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #183 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #184 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #185 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #186 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #187 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #188 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #189 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #190 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #191 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #192 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #193 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #194 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #195 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #196 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #197 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #198 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #199 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #200 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #201 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #202 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #203 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #204 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #205 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #206 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #207 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #208 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #209 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #210 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #211 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #212 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #213 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #214 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #215 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #216 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #217 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #218 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #219 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #220 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #221 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #222 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #223 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #224 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #225 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #226 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #227 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #228 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #229 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #230 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #231 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #232 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #233 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #234 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #235 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #236 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090
    #237 0x55cce061a696 in zend_call_known_instance_method /usr/src/php/Zend/zend_API.h:860
    #238 0x55cce061a6d0 in zend_call_known_instance_method_with_0_params /usr/src/php/Zend/zend_API.h:866
    #239 0x55cce061cbca in zend_objects_destroy_object /usr/src/php/Zend/zend_objects.c:194
    #240 0x55cce0617b87 in zend_objects_store_del /usr/src/php/Zend/zend_objects_API.c:179
    #241 0x55cce06ac21f in rc_dtor_func /usr/src/php/Zend/zend_variables.c:57
    #242 0x55cce00fa6fe in zval_ptr_dtor_nogc /usr/src/php/Zend/zend_variables.h:36
    #243 0x55cce0220883 in ZEND_FREE_SPEC_TMPVAR_HANDLER /usr/src/php/Zend/zend_vm_execute.h:15091
    #244 0x55cce045a058 in zend_vm_call_opcode_handler /usr/src/php/Zend/zend_vm_execute.h:68350
    #245 0x55cce076ad60 in phpdbg_execute_ex /usr/src/php/sapi/phpdbg/phpdbg_prompt.c:1817
    #246 0x55cce00ed823 in zend_call_function /usr/src/php/Zend/zend_execute_API.c:996
    #247 0x55cce00ef331 in zend_call_known_function /usr/src/php/Zend/zend_execute_API.c:1090

SUMMARY: AddressSanitizer: stack-overflow ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors_format.inc:495 in printf_common
==81874==ABORTING

@iluuu1994
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It seems phpdbg doesn't support the stack overflow check at all. I think it's because it overrides and skips execute_ex. @arnaud-lb I'm not sure if we need another check to zend_vm_call_opcode_handler()?

@arnaud-lb arnaud-lb linked a pull request Sep 25, 2024 that will close this issue
Fix GH-16041: Support stack limit in phpdbg SAPI #16055
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@arnaud-lb arnaud-lb linked a pull request Sep 27, 2024 that will close this issue
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Fix GH-16041: Support stack limit in phpdbg SAPI arnaud-lb/php-src
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@iluuu1994 @devnexen @YuanchengJiang @DanielEScherzer