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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

==1202== Invalid read of size 1
==1202==    at 0xC4E325: php_var_dump (var.c:99)
==1202==    by 0xC4E295: php_object_property_dump (var.c:82)
==1202==    by 0xE8568D: zend_hash_apply_with_arguments (zend_hash.c:701)
==1202==    by 0xC4EC12: php_var_dump (var.c:146)
==1202==    by 0xC4EF24: zif_var_dump (var.c:183)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==  Address 0x15881f94 is 20 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid read of size 1
==1202==    at 0xC4E418: php_var_dump (zend.h:415)
==1202==    by 0xC4E295: php_object_property_dump (var.c:82)
==1202==    by 0xE8568D: zend_hash_apply_with_arguments (zend_hash.c:701)
==1202==    by 0xC4EC12: php_var_dump (var.c:146)
==1202==    by 0xC4EF24: zif_var_dump (var.c:183)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==  Address 0x15881f95 is 21 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid read of size 4
==1202==    at 0xE454AB: _zval_ptr_dtor (zend.h:411)
==1202==    by 0xE84CA1: zend_hash_destroy (zend_hash.c:548)
==1202==    by 0xEB9534: zend_object_std_dtor (zend_objects.c:44)
==1202==    by 0xEB9C98: zend_objects_free_object_storage (zend_objects.c:137)
==1202==    by 0xEC91B6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==1202==    by 0xEC8D50: zend_objects_store_del_ref (zend_objects_API.c:178)
==1202==    by 0xE64F47: _zval_dtor_func (zend_variables.c:57)
==1202==    by 0xE4554D: _zval_ptr_dtor (zend_variables.h:35)
==1202==    by 0xE82500: zend_hash_bucket_delete (zend_hash.c:182)
==1202==    by 0xE858C0: zend_hash_reverse_apply (zend_hash.c:733)
==1202==    by 0xE44644: shutdown_destructors (zend_execute_API.c:217)
==1202==    by 0xE6880A: zend_call_destructors (zend.c:947)
==1202==  Address 0x15881f90 is 16 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid write of size 4
==1202==    at 0xE454B5: _zval_ptr_dtor (zend.h:411)
==1202==    by 0xE84CA1: zend_hash_destroy (zend_hash.c:548)
==1202==    by 0xEB9534: zend_object_std_dtor (zend_objects.c:44)
==1202==    by 0xEB9C98: zend_objects_free_object_storage (zend_objects.c:137)
==1202==    by 0xEC91B6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==1202==    by 0xEC8D50: zend_objects_store_del_ref (zend_objects_API.c:178)
==1202==    by 0xE64F47: _zval_dtor_func (zend_variables.c:57)
==1202==    by 0xE4554D: _zval_ptr_dtor (zend_variables.h:35)
==1202==    by 0xE82500: zend_hash_bucket_delete (zend_hash.c:182)
==1202==    by 0xE858C0: zend_hash_reverse_apply (zend_hash.c:733)
==1202==    by 0xE44644: shutdown_destructors (zend_execute_API.c:217)
==1202==    by 0xE6880A: zend_call_destructors (zend.c:947)
==1202==  Address 0x15881f90 is 16 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid read of size 4
==1202==    at 0xE454BC: _zval_ptr_dtor (zend.h:411)
==1202==    by 0xE84CA1: zend_hash_destroy (zend_hash.c:548)
==1202==    by 0xEB9534: zend_object_std_dtor (zend_objects.c:44)
==1202==    by 0xEB9C98: zend_objects_free_object_storage (zend_objects.c:137)
==1202==    by 0xEC91B6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==1202==    by 0xEC8D50: zend_objects_store_del_ref (zend_objects_API.c:178)
==1202==    by 0xE64F47: _zval_dtor_func (zend_variables.c:57)
==1202==    by 0xE4554D: _zval_ptr_dtor (zend_variables.h:35)
==1202==    by 0xE82500: zend_hash_bucket_delete (zend_hash.c:182)
==1202==    by 0xE858C0: zend_hash_reverse_apply (zend_hash.c:733)
==1202==    by 0xE44644: shutdown_destructors (zend_execute_API.c:217)
==1202==    by 0xE6880A: zend_call_destructors (zend.c:947)
==1202==  Address 0x15881f90 is 16 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid read of size 4
==1202==    at 0xE455A1: _zval_ptr_dtor (zend.h:399)
==1202==    by 0xE84CA1: zend_hash_destroy (zend_hash.c:548)
==1202==    by 0xEB9534: zend_object_std_dtor (zend_objects.c:44)
==1202==    by 0xEB9C98: zend_objects_free_object_storage (zend_objects.c:137)
==1202==    by 0xEC91B6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==1202==    by 0xEC8D50: zend_objects_store_del_ref (zend_objects_API.c:178)
==1202==    by 0xE64F47: _zval_dtor_func (zend_variables.c:57)
==1202==    by 0xE4554D: _zval_ptr_dtor (zend_variables.h:35)
==1202==    by 0xE82500: zend_hash_bucket_delete (zend_hash.c:182)
==1202==    by 0xE858C0: zend_hash_reverse_apply (zend_hash.c:733)
==1202==    by 0xE44644: shutdown_destructors (zend_execute_API.c:217)
==1202==    by 0xE6880A: zend_call_destructors (zend.c:947)
==1202==  Address 0x15881f90 is 16 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid write of size 1
==1202==    at 0xE455B5: _zval_ptr_dtor (zend.h:423)
==1202==    by 0xE84CA1: zend_hash_destroy (zend_hash.c:548)
==1202==    by 0xEB9534: zend_object_std_dtor (zend_objects.c:44)
==1202==    by 0xEB9C98: zend_objects_free_object_storage (zend_objects.c:137)
==1202==    by 0xEC91B6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==1202==    by 0xEC8D50: zend_objects_store_del_ref (zend_objects_API.c:178)
==1202==    by 0xE64F47: _zval_dtor_func (zend_variables.c:57)
==1202==    by 0xE4554D: _zval_ptr_dtor (zend_variables.h:35)
==1202==    by 0xE82500: zend_hash_bucket_delete (zend_hash.c:182)
==1202==    by 0xE858C0: zend_hash_reverse_apply (zend_hash.c:733)
==1202==    by 0xE44644: shutdown_destructors (zend_execute_API.c:217)
==1202==    by 0xE6880A: zend_call_destructors (zend.c:947)
==1202==  Address 0x15881f95 is 21 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid read of size 1
==1202==    at 0xE455D7: _zval_ptr_dtor (zend_gc.h:182)
==1202==    by 0xE84CA1: zend_hash_destroy (zend_hash.c:548)
==1202==    by 0xEB9534: zend_object_std_dtor (zend_objects.c:44)
==1202==    by 0xEB9C98: zend_objects_free_object_storage (zend_objects.c:137)
==1202==    by 0xEC91B6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==1202==    by 0xEC8D50: zend_objects_store_del_ref (zend_objects_API.c:178)
==1202==    by 0xE64F47: _zval_dtor_func (zend_variables.c:57)
==1202==    by 0xE4554D: _zval_ptr_dtor (zend_variables.h:35)
==1202==    by 0xE82500: zend_hash_bucket_delete (zend_hash.c:182)
==1202==    by 0xE858C0: zend_hash_reverse_apply (zend_hash.c:733)
==1202==    by 0xE44644: shutdown_destructors (zend_execute_API.c:217)
==1202==    by 0xE6880A: zend_call_destructors (zend.c:947)
==1202==  Address 0x15881f94 is 20 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 
==1202== Invalid read of size 1
==1202==    at 0xE455F5: _zval_ptr_dtor (zend_gc.h:182)
==1202==    by 0xE84CA1: zend_hash_destroy (zend_hash.c:548)
==1202==    by 0xEB9534: zend_object_std_dtor (zend_objects.c:44)
==1202==    by 0xEB9C98: zend_objects_free_object_storage (zend_objects.c:137)
==1202==    by 0xEC91B6: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==1202==    by 0xEC8D50: zend_objects_store_del_ref (zend_objects_API.c:178)
==1202==    by 0xE64F47: _zval_dtor_func (zend_variables.c:57)
==1202==    by 0xE4554D: _zval_ptr_dtor (zend_variables.h:35)
==1202==    by 0xE82500: zend_hash_bucket_delete (zend_hash.c:182)
==1202==    by 0xE858C0: zend_hash_reverse_apply (zend_hash.c:733)
==1202==    by 0xE44644: shutdown_destructors (zend_execute_API.c:217)
==1202==    by 0xE6880A: zend_call_destructors (zend.c:947)
==1202==  Address 0x15881f94 is 20 bytes inside a block of size 32 free'd
==1202==    at 0x4C274D4: free (vg_replace_malloc.c:468)
==1202==    by 0xE14678: _efree (zend_alloc.c:2437)
==1202==    by 0xEAC112: gc_collect_cycles (zend_gc.c:851)
==1202==    by 0xE8AA9E: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==1202==    by 0xED7044: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==1202==    by 0xEE2B45: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2595)
==1202==    by 0xED4ACA: execute_ex (zend_vm_execute.h:363)
==1202==    by 0xED566D: zend_execute (zend_vm_execute.h:388)
==1202==    by 0xE6A4DB: zend_execute_scripts (zend.c:1344)
==1202==    by 0xD88C49: php_execute_script (main.c:2584)
==1202==    by 0x101D0B6: do_cli (php_cli.c:994)
==1202==    by 0x101E863: main (php_cli.c:1378)
==1202== 

 

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