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Valgrind Report for Zend/tests/bug64896.phpt ('Bug #64896 (Segfault with gc_collect_cycles using unserialize on certain objects)')

Script

1: <?php
2: $bar 
NULL;
3: class 
bad
4:
{
5:     private 
$_private = array();
6:
7:     public function 
__construct()
8:     {
9:         
$this->_private[] = 'php';
10:     }
11:
12:     public function 
__destruct()
13:     {
14:         global 
$bar;
15:         
$bar $this;
16:     }
17: }
18:
19:
$foo = new stdclass;
20:
$foo->foo $foo;
21:
$foo->bad = new bad;
22:
23:
gc_disable();
24:
25:
unserialize(serialize($foo));
26:
gc_collect_cycles();
27:
var_dump($bar); 
28:
/*  will output:
29: object(bad)#4 (1) {
30:   ["_private":"bad":private]=>
31:   &UNKNOWN:0
32: }
33: */
34:
?>
35:

Report

==22108== Invalid read of size 1
==22108==    at 0xB902B2: php_var_dump (var.c:99)
==22108==    by 0xB90224: php_object_property_dump (var.c:82)
==22108==    by 0xD9C45D: zend_hash_apply_with_arguments (zend_hash.c:772)
==22108==    by 0xB90B3D: php_var_dump (var.c:146)
==22108==    by 0xB90E3A: zif_var_dump (var.c:183)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108==  Address 0x14e0f864 is 20 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid read of size 1
==22108==    at 0xB90383: php_var_dump (zend.h:399)
==22108==    by 0xB90224: php_object_property_dump (var.c:82)
==22108==    by 0xD9C45D: zend_hash_apply_with_arguments (zend_hash.c:772)
==22108==    by 0xB90B3D: php_var_dump (var.c:146)
==22108==    by 0xB90E3A: zif_var_dump (var.c:183)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108==  Address 0x14e0f865 is 21 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid read of size 4
==22108==    at 0xD62021: _zval_ptr_dtor (zend.h:395)
==22108==    by 0xD9B758: zend_hash_destroy (zend_hash.c:560)
==22108==    by 0xDC5030: zend_object_std_dtor (zend_objects.c:44)
==22108==    by 0xDC56FC: zend_objects_free_object_storage (zend_objects.c:137)
==22108==    by 0xDD436A: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==22108==    by 0xDD3F72: zend_objects_store_del_ref (zend_objects_API.c:178)
==22108==    by 0xD7D644: _zval_dtor_func (zend_variables.c:54)
==22108==    by 0xD620FC: _zval_ptr_dtor (zend_variables.h:35)
==22108==    by 0xD9BCAD: zend_hash_apply_deleter (zend_hash.c:650)
==22108==    by 0xD9C691: zend_hash_reverse_apply (zend_hash.c:804)
==22108==    by 0xD61431: shutdown_destructors (zend_execute_API.c:217)
==22108==    by 0xD80AF5: zend_call_destructors (zend.c:918)
==22108==  Address 0x14e0f860 is 16 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid write of size 4
==22108==    at 0xD6202B: _zval_ptr_dtor (zend.h:395)
==22108==    by 0xD9B758: zend_hash_destroy (zend_hash.c:560)
==22108==    by 0xDC5030: zend_object_std_dtor (zend_objects.c:44)
==22108==    by 0xDC56FC: zend_objects_free_object_storage (zend_objects.c:137)
==22108==    by 0xDD436A: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==22108==    by 0xDD3F72: zend_objects_store_del_ref (zend_objects_API.c:178)
==22108==    by 0xD7D644: _zval_dtor_func (zend_variables.c:54)
==22108==    by 0xD620FC: _zval_ptr_dtor (zend_variables.h:35)
==22108==    by 0xD9BCAD: zend_hash_apply_deleter (zend_hash.c:650)
==22108==    by 0xD9C691: zend_hash_reverse_apply (zend_hash.c:804)
==22108==    by 0xD61431: shutdown_destructors (zend_execute_API.c:217)
==22108==    by 0xD80AF5: zend_call_destructors (zend.c:918)
==22108==  Address 0x14e0f860 is 16 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid read of size 4
==22108==    at 0xD6203D: _zval_ptr_dtor (zend.h:383)
==22108==    by 0xD9B758: zend_hash_destroy (zend_hash.c:560)
==22108==    by 0xDC5030: zend_object_std_dtor (zend_objects.c:44)
==22108==    by 0xDC56FC: zend_objects_free_object_storage (zend_objects.c:137)
==22108==    by 0xDD436A: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==22108==    by 0xDD3F72: zend_objects_store_del_ref (zend_objects_API.c:178)
==22108==    by 0xD7D644: _zval_dtor_func (zend_variables.c:54)
==22108==    by 0xD620FC: _zval_ptr_dtor (zend_variables.h:35)
==22108==    by 0xD9BCAD: zend_hash_apply_deleter (zend_hash.c:650)
==22108==    by 0xD9C691: zend_hash_reverse_apply (zend_hash.c:804)
==22108==    by 0xD61431: shutdown_destructors (zend_execute_API.c:217)
==22108==    by 0xD80AF5: zend_call_destructors (zend.c:918)
==22108==  Address 0x14e0f860 is 16 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid read of size 4
==22108==    at 0xD62156: _zval_ptr_dtor (zend.h:383)
==22108==    by 0xD9B758: zend_hash_destroy (zend_hash.c:560)
==22108==    by 0xDC5030: zend_object_std_dtor (zend_objects.c:44)
==22108==    by 0xDC56FC: zend_objects_free_object_storage (zend_objects.c:137)
==22108==    by 0xDD436A: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==22108==    by 0xDD3F72: zend_objects_store_del_ref (zend_objects_API.c:178)
==22108==    by 0xD7D644: _zval_dtor_func (zend_variables.c:54)
==22108==    by 0xD620FC: _zval_ptr_dtor (zend_variables.h:35)
==22108==    by 0xD9BCAD: zend_hash_apply_deleter (zend_hash.c:650)
==22108==    by 0xD9C691: zend_hash_reverse_apply (zend_hash.c:804)
==22108==    by 0xD61431: shutdown_destructors (zend_execute_API.c:217)
==22108==    by 0xD80AF5: zend_call_destructors (zend.c:918)
==22108==  Address 0x14e0f860 is 16 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid write of size 1
==22108==    at 0xD6216D: _zval_ptr_dtor (zend.h:407)
==22108==    by 0xD9B758: zend_hash_destroy (zend_hash.c:560)
==22108==    by 0xDC5030: zend_object_std_dtor (zend_objects.c:44)
==22108==    by 0xDC56FC: zend_objects_free_object_storage (zend_objects.c:137)
==22108==    by 0xDD436A: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==22108==    by 0xDD3F72: zend_objects_store_del_ref (zend_objects_API.c:178)
==22108==    by 0xD7D644: _zval_dtor_func (zend_variables.c:54)
==22108==    by 0xD620FC: _zval_ptr_dtor (zend_variables.h:35)
==22108==    by 0xD9BCAD: zend_hash_apply_deleter (zend_hash.c:650)
==22108==    by 0xD9C691: zend_hash_reverse_apply (zend_hash.c:804)
==22108==    by 0xD61431: shutdown_destructors (zend_execute_API.c:217)
==22108==    by 0xD80AF5: zend_call_destructors (zend.c:918)
==22108==  Address 0x14e0f865 is 21 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid read of size 1
==22108==    at 0xD62192: _zval_ptr_dtor (zend_gc.h:182)
==22108==    by 0xD9B758: zend_hash_destroy (zend_hash.c:560)
==22108==    by 0xDC5030: zend_object_std_dtor (zend_objects.c:44)
==22108==    by 0xDC56FC: zend_objects_free_object_storage (zend_objects.c:137)
==22108==    by 0xDD436A: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==22108==    by 0xDD3F72: zend_objects_store_del_ref (zend_objects_API.c:178)
==22108==    by 0xD7D644: _zval_dtor_func (zend_variables.c:54)
==22108==    by 0xD620FC: _zval_ptr_dtor (zend_variables.h:35)
==22108==    by 0xD9BCAD: zend_hash_apply_deleter (zend_hash.c:650)
==22108==    by 0xD9C691: zend_hash_reverse_apply (zend_hash.c:804)
==22108==    by 0xD61431: shutdown_destructors (zend_execute_API.c:217)
==22108==    by 0xD80AF5: zend_call_destructors (zend.c:918)
==22108==  Address 0x14e0f864 is 20 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 
==22108== Invalid read of size 1
==22108==    at 0xD621B0: _zval_ptr_dtor (zend_gc.h:182)
==22108==    by 0xD9B758: zend_hash_destroy (zend_hash.c:560)
==22108==    by 0xDC5030: zend_object_std_dtor (zend_objects.c:44)
==22108==    by 0xDC56FC: zend_objects_free_object_storage (zend_objects.c:137)
==22108==    by 0xDD436A: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==22108==    by 0xDD3F72: zend_objects_store_del_ref (zend_objects_API.c:178)
==22108==    by 0xD7D644: _zval_dtor_func (zend_variables.c:54)
==22108==    by 0xD620FC: _zval_ptr_dtor (zend_variables.h:35)
==22108==    by 0xD9BCAD: zend_hash_apply_deleter (zend_hash.c:650)
==22108==    by 0xD9C691: zend_hash_reverse_apply (zend_hash.c:804)
==22108==    by 0xD61431: shutdown_destructors (zend_execute_API.c:217)
==22108==    by 0xD80AF5: zend_call_destructors (zend.c:918)
==22108==  Address 0x14e0f864 is 20 bytes inside a block of size 32 free'd
==22108==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==22108==    by 0xD350F9: _efree (zend_alloc.c:2433)
==22108==    by 0xDC1C58: gc_collect_cycles (zend_gc.c:851)
==22108==    by 0xDA1554: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==22108==    by 0xDE043F: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==22108==    by 0xDEA5DF: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==22108==    by 0xDDE59B: execute (zend_vm_execute.h:410)
==22108==    by 0xD82538: zend_execute_scripts (zend.c:1315)
==22108==    by 0xCB48CD: php_execute_script (main.c:2502)
==22108==    by 0xF505B4: do_cli (php_cli.c:989)
==22108==    by 0xF51BF1: main (php_cli.c:1365)
==22108== 

 

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