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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

==18653== Invalid read of size 1
==18653==    at 0xC42611: php_var_dump (var.c:99)
==18653==    by 0xC42581: php_object_property_dump (var.c:82)
==18653==    by 0xE6C606: zend_hash_apply_with_arguments (zend_hash.c:772)
==18653==    by 0xC42EFE: php_var_dump (var.c:146)
==18653==    by 0xC43210: zif_var_dump (var.c:183)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==  Address 0x153acdf4 is 20 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid read of size 1
==18653==    at 0xC42704: zval_isref_p (zend.h:413)
==18653==    by 0xC42704: php_var_dump (var.c:104)
==18653==    by 0xC42581: php_object_property_dump (var.c:82)
==18653==    by 0xE6C606: zend_hash_apply_with_arguments (zend_hash.c:772)
==18653==    by 0xC42EFE: php_var_dump (var.c:146)
==18653==    by 0xC43210: zif_var_dump (var.c:183)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==  Address 0x153acdf5 is 21 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid read of size 4
==18653==    at 0xE2DF0C: zval_delref_p (zend.h:409)
==18653==    by 0xE2DF0C: i_zval_ptr_dtor (zend_execute.h:76)
==18653==    by 0xE2DF0C: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6B8ED: zend_hash_destroy (zend_hash.c:560)
==18653==    by 0xE98EF8: zend_object_std_dtor (zend_objects.c:44)
==18653==    by 0xE9965C: zend_objects_free_object_storage (zend_objects.c:137)
==18653==    by 0xEA8CA6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==18653==    by 0xEA8840: zend_objects_store_del_ref (zend_objects_API.c:178)
==18653==    by 0xE4C07D: _zval_dtor_func (zend_variables.c:54)
==18653==    by 0xE2DFAE: _zval_dtor (zend_variables.h:35)
==18653==    by 0xE2DFAE: i_zval_ptr_dtor (zend_execute.h:81)
==18653==    by 0xE2DFAE: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6BE4E: zend_hash_apply_deleter (zend_hash.c:650)
==18653==    by 0xE6C83C: zend_hash_reverse_apply (zend_hash.c:804)
==18653==    by 0xE2D0A5: shutdown_destructors (zend_execute_API.c:214)
==18653==    by 0xE4F958: zend_call_destructors (zend.c:930)
==18653==  Address 0x153acdf0 is 16 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid write of size 4
==18653==    at 0xE2DF16: zval_delref_p (zend.h:409)
==18653==    by 0xE2DF16: i_zval_ptr_dtor (zend_execute.h:76)
==18653==    by 0xE2DF16: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6B8ED: zend_hash_destroy (zend_hash.c:560)
==18653==    by 0xE98EF8: zend_object_std_dtor (zend_objects.c:44)
==18653==    by 0xE9965C: zend_objects_free_object_storage (zend_objects.c:137)
==18653==    by 0xEA8CA6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==18653==    by 0xEA8840: zend_objects_store_del_ref (zend_objects_API.c:178)
==18653==    by 0xE4C07D: _zval_dtor_func (zend_variables.c:54)
==18653==    by 0xE2DFAE: _zval_dtor (zend_variables.h:35)
==18653==    by 0xE2DFAE: i_zval_ptr_dtor (zend_execute.h:81)
==18653==    by 0xE2DFAE: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6BE4E: zend_hash_apply_deleter (zend_hash.c:650)
==18653==    by 0xE6C83C: zend_hash_reverse_apply (zend_hash.c:804)
==18653==    by 0xE2D0A5: shutdown_destructors (zend_execute_API.c:214)
==18653==    by 0xE4F958: zend_call_destructors (zend.c:930)
==18653==  Address 0x153acdf0 is 16 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid read of size 4
==18653==    at 0xE2DF1D: zval_delref_p (zend.h:409)
==18653==    by 0xE2DF1D: i_zval_ptr_dtor (zend_execute.h:76)
==18653==    by 0xE2DF1D: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6B8ED: zend_hash_destroy (zend_hash.c:560)
==18653==    by 0xE98EF8: zend_object_std_dtor (zend_objects.c:44)
==18653==    by 0xE9965C: zend_objects_free_object_storage (zend_objects.c:137)
==18653==    by 0xEA8CA6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==18653==    by 0xEA8840: zend_objects_store_del_ref (zend_objects_API.c:178)
==18653==    by 0xE4C07D: _zval_dtor_func (zend_variables.c:54)
==18653==    by 0xE2DFAE: _zval_dtor (zend_variables.h:35)
==18653==    by 0xE2DFAE: i_zval_ptr_dtor (zend_execute.h:81)
==18653==    by 0xE2DFAE: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6BE4E: zend_hash_apply_deleter (zend_hash.c:650)
==18653==    by 0xE6C83C: zend_hash_reverse_apply (zend_hash.c:804)
==18653==    by 0xE2D0A5: shutdown_destructors (zend_execute_API.c:214)
==18653==    by 0xE4F958: zend_call_destructors (zend.c:930)
==18653==  Address 0x153acdf0 is 16 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid read of size 4
==18653==    at 0xE2E002: zval_refcount_p (zend.h:397)
==18653==    by 0xE2E002: i_zval_ptr_dtor (zend_execute.h:86)
==18653==    by 0xE2E002: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6B8ED: zend_hash_destroy (zend_hash.c:560)
==18653==    by 0xE98EF8: zend_object_std_dtor (zend_objects.c:44)
==18653==    by 0xE9965C: zend_objects_free_object_storage (zend_objects.c:137)
==18653==    by 0xEA8CA6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==18653==    by 0xEA8840: zend_objects_store_del_ref (zend_objects_API.c:178)
==18653==    by 0xE4C07D: _zval_dtor_func (zend_variables.c:54)
==18653==    by 0xE2DFAE: _zval_dtor (zend_variables.h:35)
==18653==    by 0xE2DFAE: i_zval_ptr_dtor (zend_execute.h:81)
==18653==    by 0xE2DFAE: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6BE4E: zend_hash_apply_deleter (zend_hash.c:650)
==18653==    by 0xE6C83C: zend_hash_reverse_apply (zend_hash.c:804)
==18653==    by 0xE2D0A5: shutdown_destructors (zend_execute_API.c:214)
==18653==    by 0xE4F958: zend_call_destructors (zend.c:930)
==18653==  Address 0x153acdf0 is 16 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid write of size 1
==18653==    at 0xE2E016: zval_unset_isref_p (zend.h:421)
==18653==    by 0xE2E016: i_zval_ptr_dtor (zend_execute.h:87)
==18653==    by 0xE2E016: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6B8ED: zend_hash_destroy (zend_hash.c:560)
==18653==    by 0xE98EF8: zend_object_std_dtor (zend_objects.c:44)
==18653==    by 0xE9965C: zend_objects_free_object_storage (zend_objects.c:137)
==18653==    by 0xEA8CA6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==18653==    by 0xEA8840: zend_objects_store_del_ref (zend_objects_API.c:178)
==18653==    by 0xE4C07D: _zval_dtor_func (zend_variables.c:54)
==18653==    by 0xE2DFAE: _zval_dtor (zend_variables.h:35)
==18653==    by 0xE2DFAE: i_zval_ptr_dtor (zend_execute.h:81)
==18653==    by 0xE2DFAE: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6BE4E: zend_hash_apply_deleter (zend_hash.c:650)
==18653==    by 0xE6C83C: zend_hash_reverse_apply (zend_hash.c:804)
==18653==    by 0xE2D0A5: shutdown_destructors (zend_execute_API.c:214)
==18653==    by 0xE4F958: zend_call_destructors (zend.c:930)
==18653==  Address 0x153acdf5 is 21 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid read of size 1
==18653==    at 0xE2E038: gc_zval_check_possible_root (zend_gc.h:182)
==18653==    by 0xE2E038: i_zval_ptr_dtor (zend_execute.h:90)
==18653==    by 0xE2E038: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6B8ED: zend_hash_destroy (zend_hash.c:560)
==18653==    by 0xE98EF8: zend_object_std_dtor (zend_objects.c:44)
==18653==    by 0xE9965C: zend_objects_free_object_storage (zend_objects.c:137)
==18653==    by 0xEA8CA6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==18653==    by 0xEA8840: zend_objects_store_del_ref (zend_objects_API.c:178)
==18653==    by 0xE4C07D: _zval_dtor_func (zend_variables.c:54)
==18653==    by 0xE2DFAE: _zval_dtor (zend_variables.h:35)
==18653==    by 0xE2DFAE: i_zval_ptr_dtor (zend_execute.h:81)
==18653==    by 0xE2DFAE: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6BE4E: zend_hash_apply_deleter (zend_hash.c:650)
==18653==    by 0xE6C83C: zend_hash_reverse_apply (zend_hash.c:804)
==18653==    by 0xE2D0A5: shutdown_destructors (zend_execute_API.c:214)
==18653==    by 0xE4F958: zend_call_destructors (zend.c:930)
==18653==  Address 0x153acdf4 is 20 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 
==18653== Invalid read of size 1
==18653==    at 0xE2E056: gc_zval_check_possible_root (zend_gc.h:182)
==18653==    by 0xE2E056: i_zval_ptr_dtor (zend_execute.h:90)
==18653==    by 0xE2E056: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6B8ED: zend_hash_destroy (zend_hash.c:560)
==18653==    by 0xE98EF8: zend_object_std_dtor (zend_objects.c:44)
==18653==    by 0xE9965C: zend_objects_free_object_storage (zend_objects.c:137)
==18653==    by 0xEA8CA6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==18653==    by 0xEA8840: zend_objects_store_del_ref (zend_objects_API.c:178)
==18653==    by 0xE4C07D: _zval_dtor_func (zend_variables.c:54)
==18653==    by 0xE2DFAE: _zval_dtor (zend_variables.h:35)
==18653==    by 0xE2DFAE: i_zval_ptr_dtor (zend_execute.h:81)
==18653==    by 0xE2DFAE: _zval_ptr_dtor (zend_execute_API.c:423)
==18653==    by 0xE6BE4E: zend_hash_apply_deleter (zend_hash.c:650)
==18653==    by 0xE6C83C: zend_hash_reverse_apply (zend_hash.c:804)
==18653==    by 0xE2D0A5: shutdown_destructors (zend_execute_API.c:214)
==18653==    by 0xE4F958: zend_call_destructors (zend.c:930)
==18653==  Address 0x153acdf4 is 20 bytes inside a block of size 32 free'd
==18653==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==18653==    by 0xDFC7AC: _efree (zend_alloc.c:2437)
==18653==    by 0xE92F46: gc_collect_cycles (zend_gc.c:851)
==18653==    by 0xE719F1: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==18653==    by 0xEB6961: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:550)
==18653==    by 0xEC0AA4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2336)
==18653==    by 0xEB45B0: execute_ex (zend_vm_execute.h:363)
==18653==    by 0xEB5142: zend_execute (zend_vm_execute.h:388)
==18653==    by 0xE51684: zend_execute_scripts (zend.c:1327)
==18653==    by 0xD7441A: php_execute_script (main.c:2525)
==18653==    by 0x103A981: do_cli (php_cli.c:994)
==18653==    by 0x103C12E: main (php_cli.c:1378)
==18653== 

 

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