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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

==10022== Invalid read of size 1
==10022==    at 0xB92F3E: php_var_dump (var.c:99)
==10022==    by 0xB92EB0: php_object_property_dump (var.c:82)
==10022==    by 0xD9F469: zend_hash_apply_with_arguments (zend_hash.c:772)
==10022==    by 0xB937C9: php_var_dump (var.c:146)
==10022==    by 0xB93AC6: zif_var_dump (var.c:183)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022==  Address 0x14e16bd4 is 20 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid read of size 1
==10022==    at 0xB9300F: php_var_dump (zend.h:399)
==10022==    by 0xB92EB0: php_object_property_dump (var.c:82)
==10022==    by 0xD9F469: zend_hash_apply_with_arguments (zend_hash.c:772)
==10022==    by 0xB937C9: php_var_dump (var.c:146)
==10022==    by 0xB93AC6: zif_var_dump (var.c:183)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022==  Address 0x14e16bd5 is 21 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid read of size 4
==10022==    at 0xD6502D: _zval_ptr_dtor (zend.h:395)
==10022==    by 0xD9E764: zend_hash_destroy (zend_hash.c:560)
==10022==    by 0xDC802C: zend_object_std_dtor (zend_objects.c:44)
==10022==    by 0xDC86F8: zend_objects_free_object_storage (zend_objects.c:137)
==10022==    by 0xDD7366: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==10022==    by 0xDD6F6E: zend_objects_store_del_ref (zend_objects_API.c:178)
==10022==    by 0xD80650: _zval_dtor_func (zend_variables.c:54)
==10022==    by 0xD65108: _zval_ptr_dtor (zend_variables.h:35)
==10022==    by 0xD9ECB9: zend_hash_apply_deleter (zend_hash.c:650)
==10022==    by 0xD9F69D: zend_hash_reverse_apply (zend_hash.c:804)
==10022==    by 0xD6443D: shutdown_destructors (zend_execute_API.c:217)
==10022==    by 0xD83B01: zend_call_destructors (zend.c:918)
==10022==  Address 0x14e16bd0 is 16 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid write of size 4
==10022==    at 0xD65037: _zval_ptr_dtor (zend.h:395)
==10022==    by 0xD9E764: zend_hash_destroy (zend_hash.c:560)
==10022==    by 0xDC802C: zend_object_std_dtor (zend_objects.c:44)
==10022==    by 0xDC86F8: zend_objects_free_object_storage (zend_objects.c:137)
==10022==    by 0xDD7366: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==10022==    by 0xDD6F6E: zend_objects_store_del_ref (zend_objects_API.c:178)
==10022==    by 0xD80650: _zval_dtor_func (zend_variables.c:54)
==10022==    by 0xD65108: _zval_ptr_dtor (zend_variables.h:35)
==10022==    by 0xD9ECB9: zend_hash_apply_deleter (zend_hash.c:650)
==10022==    by 0xD9F69D: zend_hash_reverse_apply (zend_hash.c:804)
==10022==    by 0xD6443D: shutdown_destructors (zend_execute_API.c:217)
==10022==    by 0xD83B01: zend_call_destructors (zend.c:918)
==10022==  Address 0x14e16bd0 is 16 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid read of size 4
==10022==    at 0xD65049: _zval_ptr_dtor (zend.h:383)
==10022==    by 0xD9E764: zend_hash_destroy (zend_hash.c:560)
==10022==    by 0xDC802C: zend_object_std_dtor (zend_objects.c:44)
==10022==    by 0xDC86F8: zend_objects_free_object_storage (zend_objects.c:137)
==10022==    by 0xDD7366: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==10022==    by 0xDD6F6E: zend_objects_store_del_ref (zend_objects_API.c:178)
==10022==    by 0xD80650: _zval_dtor_func (zend_variables.c:54)
==10022==    by 0xD65108: _zval_ptr_dtor (zend_variables.h:35)
==10022==    by 0xD9ECB9: zend_hash_apply_deleter (zend_hash.c:650)
==10022==    by 0xD9F69D: zend_hash_reverse_apply (zend_hash.c:804)
==10022==    by 0xD6443D: shutdown_destructors (zend_execute_API.c:217)
==10022==    by 0xD83B01: zend_call_destructors (zend.c:918)
==10022==  Address 0x14e16bd0 is 16 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid read of size 4
==10022==    at 0xD65162: _zval_ptr_dtor (zend.h:383)
==10022==    by 0xD9E764: zend_hash_destroy (zend_hash.c:560)
==10022==    by 0xDC802C: zend_object_std_dtor (zend_objects.c:44)
==10022==    by 0xDC86F8: zend_objects_free_object_storage (zend_objects.c:137)
==10022==    by 0xDD7366: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==10022==    by 0xDD6F6E: zend_objects_store_del_ref (zend_objects_API.c:178)
==10022==    by 0xD80650: _zval_dtor_func (zend_variables.c:54)
==10022==    by 0xD65108: _zval_ptr_dtor (zend_variables.h:35)
==10022==    by 0xD9ECB9: zend_hash_apply_deleter (zend_hash.c:650)
==10022==    by 0xD9F69D: zend_hash_reverse_apply (zend_hash.c:804)
==10022==    by 0xD6443D: shutdown_destructors (zend_execute_API.c:217)
==10022==    by 0xD83B01: zend_call_destructors (zend.c:918)
==10022==  Address 0x14e16bd0 is 16 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid write of size 1
==10022==    at 0xD65179: _zval_ptr_dtor (zend.h:407)
==10022==    by 0xD9E764: zend_hash_destroy (zend_hash.c:560)
==10022==    by 0xDC802C: zend_object_std_dtor (zend_objects.c:44)
==10022==    by 0xDC86F8: zend_objects_free_object_storage (zend_objects.c:137)
==10022==    by 0xDD7366: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==10022==    by 0xDD6F6E: zend_objects_store_del_ref (zend_objects_API.c:178)
==10022==    by 0xD80650: _zval_dtor_func (zend_variables.c:54)
==10022==    by 0xD65108: _zval_ptr_dtor (zend_variables.h:35)
==10022==    by 0xD9ECB9: zend_hash_apply_deleter (zend_hash.c:650)
==10022==    by 0xD9F69D: zend_hash_reverse_apply (zend_hash.c:804)
==10022==    by 0xD6443D: shutdown_destructors (zend_execute_API.c:217)
==10022==    by 0xD83B01: zend_call_destructors (zend.c:918)
==10022==  Address 0x14e16bd5 is 21 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid read of size 1
==10022==    at 0xD6519E: _zval_ptr_dtor (zend_gc.h:182)
==10022==    by 0xD9E764: zend_hash_destroy (zend_hash.c:560)
==10022==    by 0xDC802C: zend_object_std_dtor (zend_objects.c:44)
==10022==    by 0xDC86F8: zend_objects_free_object_storage (zend_objects.c:137)
==10022==    by 0xDD7366: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==10022==    by 0xDD6F6E: zend_objects_store_del_ref (zend_objects_API.c:178)
==10022==    by 0xD80650: _zval_dtor_func (zend_variables.c:54)
==10022==    by 0xD65108: _zval_ptr_dtor (zend_variables.h:35)
==10022==    by 0xD9ECB9: zend_hash_apply_deleter (zend_hash.c:650)
==10022==    by 0xD9F69D: zend_hash_reverse_apply (zend_hash.c:804)
==10022==    by 0xD6443D: shutdown_destructors (zend_execute_API.c:217)
==10022==    by 0xD83B01: zend_call_destructors (zend.c:918)
==10022==  Address 0x14e16bd4 is 20 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 
==10022== Invalid read of size 1
==10022==    at 0xD651BC: _zval_ptr_dtor (zend_gc.h:182)
==10022==    by 0xD9E764: zend_hash_destroy (zend_hash.c:560)
==10022==    by 0xDC802C: zend_object_std_dtor (zend_objects.c:44)
==10022==    by 0xDC86F8: zend_objects_free_object_storage (zend_objects.c:137)
==10022==    by 0xDD7366: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==10022==    by 0xDD6F6E: zend_objects_store_del_ref (zend_objects_API.c:178)
==10022==    by 0xD80650: _zval_dtor_func (zend_variables.c:54)
==10022==    by 0xD65108: _zval_ptr_dtor (zend_variables.h:35)
==10022==    by 0xD9ECB9: zend_hash_apply_deleter (zend_hash.c:650)
==10022==    by 0xD9F69D: zend_hash_reverse_apply (zend_hash.c:804)
==10022==    by 0xD6443D: shutdown_destructors (zend_execute_API.c:217)
==10022==    by 0xD83B01: zend_call_destructors (zend.c:918)
==10022==  Address 0x14e16bd4 is 20 bytes inside a block of size 32 free'd
==10022==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==10022==    by 0xD3802D: _efree (zend_alloc.c:2433)
==10022==    by 0xDC4C64: gc_collect_cycles (zend_gc.c:851)
==10022==    by 0xDA4560: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==10022==    by 0xDE343B: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:643)
==10022==    by 0xDED5DB: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2233)
==10022==    by 0xDE1597: execute (zend_vm_execute.h:410)
==10022==    by 0xD85544: zend_execute_scripts (zend.c:1315)
==10022==    by 0xCB7791: php_execute_script (main.c:2502)
==10022==    by 0xF53688: do_cli (php_cli.c:989)
==10022==    by 0xF54CC5: main (php_cli.c:1365)
==10022== 

 

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