Edit report at https://bugs.php.net/bug.php?id=55359&edit=1
ID: 55359
Updated by: paj...@php.net
Reported by: philipp at qwert dot ch
Summary: Segfault in engine shutdown related to stream_flush
-Status: Open
+Status: Feedback
Type: Bug
Package: Streams related
Operating System: Linux
PHP Version: 5.3.6
Block user comment: N
Private report: N
New Comment:
Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves.
A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external
resources such as databases, etc. If the script requires a
database to demonstrate the issue, please make sure it creates
all necessary tables, stored procedures etc.
Please avoid embedding huge scripts into the report.
Previous Comments:
------------------------------------------------------------------------
[2011-08-04 08:51:23] philipp at qwert dot ch
Description:
------------
I'm experiencing regular segfaults which seem to be related to a stream wrapper
we're using. The function called in zend_call_function in the innermost frame
is
"stream_flush":
(gdb) frame 0
(gdb) printzv fci.function_name
[0xa1c20cd0] (refcount=-1581118160,is_ref) string(12): "stream_flush"
Also see the gdb backtrace provided.
Actual result:
--------------
#0 0x00007fa1abfb145a in zend_call_function (fci=0x7fffa1c20c50,
fci_cache=0x7fffa1c20ae0) at /root/install/php-5.3.6/Zend/zend_execute_API.c:855
#1 0x00007fa1abfb0fdc in call_user_function_ex (function_table=0x0,
object_pp=0x7fa1b2ad2a58, function_name=0x7fffa1c20cd0,
retval_ptr_ptr=0x7fffa1c20d00, param_count=0, params=0x0, no_separation=0,
symbol_table=0x0) at /root/install/php-5.3.6/Zend/zend_execute_API.c:754
#2 0x00007fa1abf6bafc in php_userstreamop_flush (stream=0x7fa1b271d278) at
/root/install/php-5.3.6/main/streams/userspace.c:754
#3 0x00007fa1abf5f53b in _php_stream_flush (stream=0x7fa1b271d278, closing=1)
at /root/install/php-5.3.6/main/streams/streams.c:1054
#4 0x00007fa1abf5da05 in _php_stream_free (stream=0x7fa1b271d278,
close_options=11) at /root/install/php-5.3.6/main/streams/streams.c:331
#5 0x00007fa1abf60743 in stream_resource_regular_dtor (rsrc=0x7fa1b26f6028) at
/root/install/php-5.3.6/main/streams/streams.c:1433
#6 0x00007fa1abfd5f43 in list_entry_destructor (ptr=0x7fa1b26f6028) at
/root/install/php-5.3.6/Zend/zend_list.c:184
#7 0x00007fa1abfd2dce in zend_hash_del_key_or_index (ht=0x7fa1ac85b390,
arKey=0x0, nKeyLength=0, h=557, flag=1) at /root/install/php-
5.3.6/Zend/zend_hash.c:500
#8 0x00007fa1abfd5a57 in _zend_list_delete (id=557) at /root/install/php-
5.3.6/Zend/zend_list.c:58
#9 0x00007fa1abfbfa6f in _zval_dtor_func (zvalue=0x7fa1b2afc688,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.c:60
#10 0x00007fa1abfae891 in _zval_dtor (zvalue=0x7fa1b2afc688,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.h:35
#11 0x00007fa1abfafc77 in _zval_ptr_dtor (zval_ptr=0x7fa1b2b13750,
__zend_filename=0x7fa1ac535490 "/root/install/php-5.3.6/Zend/zend_variables.c",
__zend_lineno=189)
at /root/install/php-5.3.6/Zend/zend_execute_API.c:443
#12 0x00007fa1abfbfed8 in _zval_ptr_dtor_wrapper (zval_ptr=0x7fa1b2b13750) at
/root/install/php-5.3.6/Zend/zend_variables.c:189
#13 0x00007fa1abfd2f2c in zend_hash_destroy (ht=0x7fa1b2b05570) at
/root/install/php-5.3.6/Zend/zend_hash.c:529
#14 0x00007fa1abfbfa22 in _zval_dtor_func (zvalue=0x7fa1b2afedb0,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.c:43
#15 0x00007fa1abfae891 in _zval_dtor (zvalue=0x7fa1b2afedb0,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.h:35
#16 0x00007fa1abfafc77 in _zval_ptr_dtor (zval_ptr=0x7fa1b26f20b0,
__zend_filename=0x7fa1ac535490 "/root/install/php-5.3.6/Zend/zend_variables.c",
__zend_lineno=189)
at /root/install/php-5.3.6/Zend/zend_execute_API.c:443
#17 0x00007fa1abfbfed8 in _zval_ptr_dtor_wrapper (zval_ptr=0x7fa1b26f20b0) at
/root/install/php-5.3.6/Zend/zend_variables.c:189
#18 0x00007fa1abfd2f2c in zend_hash_destroy (ht=0x7fa1b26e4a08) at
/root/install/php-5.3.6/Zend/zend_hash.c:529
#19 0x00007fa1abfbfa22 in _zval_dtor_func (zvalue=0x7fa1b276b5c8,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.c:43
#20 0x00007fa1abfae891 in _zval_dtor (zvalue=0x7fa1b276b5c8,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.h:35
#21 0x00007fa1abfafc77 in _zval_ptr_dtor (zval_ptr=0x7fa1b2422310,
__zend_filename=0x7fa1ac535490 "/root/install/php-5.3.6/Zend/zend_variables.c",
__zend_lineno=189)
at /root/install/php-5.3.6/Zend/zend_execute_API.c:443
#22 0x00007fa1abfbfed8 in _zval_ptr_dtor_wrapper (zval_ptr=0x7fa1b2422310) at
/root/install/php-5.3.6/Zend/zend_variables.c:189
#23 0x00007fa1abfd2f2c in zend_hash_destroy (ht=0x7fa1b219f4e0) at
/root/install/php-5.3.6/Zend/zend_hash.c:529
#24 0x00007fa1abfec53f in zend_object_std_dtor (object=0x7fa1b2473ef8) at
/root/install/php-5.3.6/Zend/zend_objects.c:45
#25 0x00007fa1abfec942 in zend_objects_free_object_storage
(object=0x7fa1b2473ef8) at /root/install/php-5.3.6/Zend/zend_objects.c:126
#26 0x00007fa1abff24d6 in zend_objects_store_del_ref_by_handle_ex (handle=212,
handlers=0x7fa1ac83b580) at /root/install/php-5.3.6/Zend/zend_objects_API.c:220
#27 0x00007fa1abff21cf in zend_objects_store_del_ref (zobject=0x7fa1b219b998)
at
/root/install/php-5.3.6/Zend/zend_objects_API.c:172
#28 0x00007fa1abfbfa5f in _zval_dtor_func (zvalue=0x7fa1b219b998,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.c:52
#29 0x00007fa1abfae891 in _zval_dtor (zvalue=0x7fa1b219b998,
__zend_filename=0x7fa1ac5343a8 "/root/install/php-
5.3.6/Zend/zend_execute_API.c", __zend_lineno=443)
at /root/install/php-5.3.6/Zend/zend_variables.h:35
#30 0x00007fa1abfafc77 in _zval_ptr_dtor (zval_ptr=0x7fa1b2257238,
__zend_filename=0x7fa1ac535490 "/root/install/php-5.3.6/Zend/zend_variables.c",
__zend_lineno=189)
at /root/install/php-5.3.6/Zend/zend_execute_API.c:443
#31 0x00007fa1abfbfed8 in _zval_ptr_dtor_wrapper (zval_ptr=0x7fa1b2257238) at
/root/install/php-5.3.6/Zend/zend_variables.c:189
#32 0x00007fa1abfd2f2c in zend_hash_destroy (ht=0x7fa1b21a0758) at
/root/install/php-5.3.6/Zend/zend_hash.c:529
#33 0x00007fa1abfec53f in zend_object_std_dtor (object=0x7fa1b22394b0) at
/root/install/php-5.3.6/Zend/zend_objects.c:45
#34 0x00007fa1abfec942 in zend_objects_free_object_storage
(object=0x7fa1b22394b0) at /root/install/php-5.3.6/Zend/zend_objects.c:126
#35 0x00007fa1abff1f05 in zend_objects_store_free_object_storage
(objects=0x7fa1ac85b4b8) at /root/install/php-5.3.6/Zend/zend_objects_API.c:92
#36 0x00007fa1abfaf6d1 in shutdown_executor () at /root/install/php-
5.3.6/Zend/zend_execute_API.c:302
#37 0x00007fa1abfc1b24 in zend_deactivate () at /root/install/php-
5.3.6/Zend/zend.c:890
#38 0x00007fa1abf40a2e in php_request_shutdown (dummy=0x0) at /root/install/php-
5.3.6/main/main.c:1635
#39 0x00007fa1ac0abb94 in php_apache_request_dtor (r=0x7fa1b14cad78) at
/root/install/php-5.3.6/sapi/apache2handler/sapi_apache2.c:509
#40 0x00007fa1ac0ac408 in php_handler (r=0x7fa1b14cad78) at /root/install/php-
5.3.6/sapi/apache2handler/sapi_apache2.c:681
#41 0x00007fa1b01b7140 in ap_run_handler (r=0x7fa1b14cad78) at
/build/buildd/apache2-2.2.14/server/config.c:159
#42 0x00007fa1b01baaa8 in ap_invoke_handler (r=0x7fa1b14cad78) at
/build/buildd/apache2-2.2.14/server/config.c:373
#43 0x00007fa1b01c8678 in ap_process_request (r=0x7fa1b14cad78) at
/build/buildd/apache2-2.2.14/modules/http/http_request.c:282
#44 0x00007fa1b01c5528 in ap_process_http_connection (c=0x7fa1b14c4c68) at
/build/buildd/apache2-2.2.14/modules/http/http_core.c:190
#45 0x00007fa1b01becf8 in ap_run_process_connection (c=0x7fa1b14c4c68) at
/build/buildd/apache2-2.2.14/server/connection.c:43
#46 0x00007fa1b01cd037 in child_main (child_num_arg=<value optimized out>) at
/build/buildd/apache2-2.2.14/server/mpm/prefork/prefork.c:662
#47 0x00007fa1b01cd34a in make_child (s=0x7fa1b1099938, slot=5) at
/build/buildd/apache2-2.2.14/server/mpm/prefork/prefork.c:758
#48 0x00007fa1b01cdfd4 in perform_idle_server_maintenance (_pconf=<value
optimized out>, plog=<value optimized out>, s=<value optimized out>)
at /build/buildd/apache2-2.2.14/server/mpm/prefork/prefork.c:893
#49 ap_mpm_run (_pconf=<value optimized out>, plog=<value optimized out>, s=
<value optimized out>) at /build/buildd/apache2-
2.2.14/server/mpm/prefork/prefork.c:1097
#50 0x00007fa1b01a3350 in main (argc=3, argv=0x7fffa1c22058) at
/build/buildd/apache2-2.2.14/server/main.c:742
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=55359&edit=1
