PHP :: Bug #62996 :: pecl-APC-3.1.12 crashes on FreeBSD

Bug #62996

pecl-APC-3.1.12 crashes on FreeBSD

Submitted:

2012-09-02 12:10 UTC

Modified:

2012-09-04 09:01 UTC

Votes:	1
Avg. Score:	5.0 ± 0.0
Reproduced:	1 of 1 (100.0%)
Same Version:	1 (100.0%)
Same OS:	1 (100.0%)

From:

astatutov at gmail dot com

Assigned:

pajoye (profile)

Status:

Closed

Package:

APC (PECL)

PHP Version:

5.4.6

OS:

FreeBSD 8.2

Private report:

CVE-ID:

None

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From:	astatutov at gmail dot com
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[2012-09-02 12:10 UTC] astatutov at gmail dot com

Description:
------------
After upgrading PHP to 5.4.6 (from 5.3) pecl-APC crashes Apache workers.

httpd-error.log:
[Sun Sep 02 14:26:55 2012] [error] child died with signal 11
[Sun Sep 02 14:26:56 2012] [error] child died with signal 11
[Sun Sep 02 14:26:56 2012] [error] child died with signal 11
and so on... Connection were reseted. 

The problem does not appear if pecl-APC is disabled.

The module was compiled with the options: mmap, fcntl, spinlocks. Enabling/disabling those options has no positive effect. The module is completely unusable now on this machine. Other server has 32-bit FreeBSD installed and it works fine with the same ports.

Sorry, I have no possibility to make a gdb backtrace because the server is in production.

Patches

Pull Requests

History

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[2012-09-02 13:08 UTC] ab@php.net

Could you please at least post the apc config you're using and phpinfo()? May be 
you could make a dump on your dev environment (if it's reproduceable there)?

[2012-09-02 13:08 UTC] ab@php.net

-Status: Open +Status: Feedback

[2012-09-02 16:09 UTC] astatutov at gmail dot com

-Summary: pecl-APC-3.1.12 crashas on x64 FreeBSD +Summary: pecl-APC-3.1.12 crashes on FreeBSD -Status: Feedback +Status: Open

[2012-09-02 16:09 UTC] astatutov at gmail dot com

I've just noticed I was wrong thinking that the problem does not affect 32-bit system. It's just not so loaded, because it's a dev server, that's why I haven't noticed the problem earlier. This looks like an unpredictable behavior, I think crash probability may depend on concurrent connections or smth like that. But since it's reproduceable on dev environment I'll try to make a dump tomorrow.

=== php.ini:
apc.cache_by_default = Off
apc.slam_defense = 0
apc.shm_size = 1024M

=== Shortened phpinfo (don't understand how to attach file here), pecl-APC is not installed now:
System => FreeBSD bestyle.ru 8.2-RELEASE-p6 FreeBSD 8.2-RELEASE-p6 #4: Sun Mar 25 17:17:00 MSK 2012     bestyle-root@bestyle.ru:/usr/obj/usr/src/sys/INTEL amd64
Build Date => Sep  2 2012 01:45:23
Configure Command =>  './configure'  '--with-layout=GNU' '--localstatedir=/var' '--with-config-file-scan-dir=/usr/local/etc/php' '--disable-all' '--enable-libxml' '--enable-mysqlnd' '--with-libxml-dir=/usr/local' '--with-pcre-regex=/usr/local' '--with-zlib-dir=/usr' '--program-prefix=' '--with-apxs2=/usr/local/sbin/apxs' '--with-regex=php' '--with-zend-vm=CALL' '--prefix=/usr/local' '--mandir=/usr/local/man' '--infodir=/usr/local/info/' '--build=amd64-portbld-freebsd8.2'
Server API => Command Line Interface
Virtual Directory Support => disabled
Configuration File (php.ini) Path => /usr/local/etc
Loaded Configuration File => /usr/local/etc/php-cli.ini
Scan this dir for additional .ini files => /usr/local/etc/php
Additional .ini files parsed => /usr/local/etc/php/extensions.ini

PHP API => 20100412
PHP Extension => 20100525
Zend Extension => 220100525
Zend Extension Build => API220100525,NTS
PHP Extension Build => API20100525,NTS
Debug Build => no
Thread Safety => disabled
Zend Signal Handling => disabled
Zend Memory Manager => enabled
Zend Multibyte Support => provided by mbstring
IPv6 Support => enabled
DTrace Support => disabled

Registered PHP Streams => compress.bzip2, zip, php, file, glob, data, http, ftp, https, ftps, compress.zlib, phar
Registered Stream Socket Transports => tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
Registered Stream Filters => bzip2.*, mcrypt.*, mdecrypt.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, zlib.*, convert.iconv.*, http.*

Core

Directive => Local Value => Master Value
allow_url_fopen => On => On
allow_url_include => Off => Off
always_populate_raw_post_data => Off => Off
arg_separator.input => & => &
arg_separator.output => & => &
asp_tags => Off => Off
auto_append_file => no value => no value
auto_globals_jit => On => On
auto_prepend_file => no value => no value
browscap => no value => no value
default_charset => UTF-8 => UTF-8
default_mimetype => text/html => text/html
disable_classes => no value => no value
disable_functions => no value => no value
display_errors => STDOUT => STDOUT
display_startup_errors => Off => Off
doc_root => no value => no value
docref_ext => no value => no value
docref_root => no value => no value
enable_dl => On => On
enable_post_data_reading => On => On
error_append_string => no value => no value
error_log => no value => no value
error_prepend_string => no value => no value
error_reporting => no value => no value
exit_on_timeout => Off => Off
expose_php => On => On
extension_dir => /usr/local/lib/php/20100525 => /usr/local/lib/php/20100525
file_uploads => On => On
html_errors => Off => Off
ignore_repeated_errors => Off => Off
ignore_repeated_source => Off => Off
ignore_user_abort => Off => Off
implicit_flush => On => On
include_path => .:/usr/local/share/pear => .:/usr/local/share/pear
log_errors => Off => Off
log_errors_max_len => 1024 => 1024
mail.add_x_header => Off => Off
mail.force_extra_parameters => no value => no value
mail.log => no value => no value
max_execution_time => 0 => 0
max_file_uploads => 20 => 20
max_input_nesting_level => 64 => 64
max_input_time => -1 => -1
max_input_vars => 1000 => 1000
memory_limit => 512M => 512M
open_basedir => no value => no value
output_buffering => 0 => 0
output_handler => no value => no value
post_max_size => 8M => 8M
precision => 14 => 14
realpath_cache_size => 16K => 16K
realpath_cache_ttl => 120 => 120
register_argc_argv => On => On
report_memleaks => On => On
report_zend_debug => Off => Off
request_order => no value => no value
sendmail_from => no value => no value
sendmail_path => /usr/sbin/sendmail -t -i  => /usr/sbin/sendmail -t -i 
serialize_precision => 17 => 17
short_open_tag => On => On
SMTP => localhost => localhost
smtp_port => 25 => 25
sql.safe_mode => Off => Off
track_errors => Off => Off
unserialize_callback_func => no value => no value
upload_max_filesize => 2M => 2M
upload_tmp_dir => no value => no value
user_dir => no value => no value
user_ini.cache_ttl => 300 => 300
user_ini.filename => .user.ini => .user.ini
variables_order => ES => ES
xmlrpc_error_number => 0 => 0
xmlrpc_errors => Off => Off
zend.detect_unicode => On => On
zend.enable_gc => On => On
zend.multibyte => Off => Off

[2012-09-03 16:45 UTC] astatutov at gmail dot com

Ok, I've finally made it. 

==== Here is gdb core backtrace:
#0  0x29ee5b56 in apc_new_interned_string (
    arKey=0x2a41f8d0 "\r\ra:53:{i:0;s:15:\"lib/odb/odb.php\";i:1;s:21:\"lib/odb/path/path.php\";i:2;s:17:\"lib/utils/str.php\";i:3;s:18:\"lib/utils/date.php\";i:4;s:16:\"lib/utils/io.php\";i:5;s:20:\"lib/utils/access.php\";i:6;s:18:\"lib"..., nKeyLength=2050) at /usr/ports/www/pecl-APC/work/APC-3.1.12/apc_string.c:84
#1  0x29ed483d in apc_string_pmemcpy (
    str=0x2a41f8d0 "\r\ra:53:{i:0;s:15:\"lib/odb/odb.php\";i:1;s:21:\"lib/odb/path/path.php\";i:2;s:17:\"lib/utils/str.php\";i:3;s:18:\"lib/utils/date.php\";i:4;s:16:\"lib/utils/io.php\";i:5;s:20:\"lib/utils/access.php\";i:6;s:18:\"lib"..., len=2050, pool=0x2c205110) at /usr/ports/www/pecl-APC/work/APC-3.1.12/apc_compile.c:291
#2  0x29ed4ac6 in my_copy_zval (dst=0x2c205198, src=0x2a39d274, ctxt=0xbfbfc3a8) at /usr/ports/www/pecl-APC/work/APC-3.1.12/apc_compile.c:348
#3  0x29ed651d in apc_copy_zval (dst=0x2c205198, src=0x2a39d274, ctxt=0xbfbfc3a8) at /usr/ports/www/pecl-APC/work/APC-3.1.12/apc_compile.c:1099
#4  0x29ed2ed2 in apc_cache_store_zval (dst=0x0, src=0x2a39d274, ctxt=0xbfbfc3a8) at /usr/ports/www/pecl-APC/work/APC-3.1.12/apc_cache.c:1121
#5  0x29ed304a in apc_cache_make_user_entry (info=0x2a107dc4 "lab:devel:/lib/all", info_len=19, val=0x2a39d274, ctxt=0xbfbfc3a8, ttl=0) at /usr/ports/www/pecl-APC/work/APC-3.1.12/apc_cache.c:1161
#6  0x29ecd060 in _apc_store (strkey=0x2a107dc4 "lab:devel:/lib/all", strkey_len=19, val=0x2a39d274, ttl=0, exclusive=0) at /usr/ports/www/pecl-APC/work/APC-3.1.12/php_apc.c:611
#7  0x29ecd346 in apc_store_helper (ht=2, return_value=0x2a41eec0, return_value_ptr=0x0, this_ptr=0x0, return_value_used=1, exclusive=0) at /usr/ports/www/pecl-APC/work/APC-3.1.12/php_apc.c:670
#8  0x29ecd3c5 in zif_apc_store (ht=2, return_value=0x2a41eec0, return_value_ptr=0x0, this_ptr=0x0, return_value_used=1) at /usr/ports/www/pecl-APC/work/APC-3.1.12/php_apc.c:683
#9  0x28ed68ba in zend_do_fcall_common_helper_SPEC (execute_data=0x29424f60) at zend_vm_execute.h:642
#10 0x28edd2df in ZEND_DO_FCALL_SPEC_CONST_HANDLER (execute_data=0x29424f60) at zend_vm_execute.h:2219
#11 0x28ed5371 in execute (op_array=0x2a4148a0) at zend_vm_execute.h:410
#12 0x28e8f4bd in zend_call_function (fci=0xbfbfc8ec, fci_cache=0xbfbfc8d8) at /usr/ports/lang/php5/work/php-5.4.6/Zend/zend_execute_API.c:958
#13 0x28d3b6a8 in zif_call_user_func_array (ht=2, return_value=0x2a39cf80, return_value_ptr=0x0, this_ptr=0x0, return_value_used=1) at /usr/ports/lang/php5/work/php-5.4.6/ext/standard/basic_functions.c:4749
#14 0x28ed68ba in zend_do_fcall_common_helper_SPEC (execute_data=0x29424b30) at zend_vm_execute.h:642
#15 0x28edd2df in ZEND_DO_FCALL_SPEC_CONST_HANDLER (execute_data=0x29424b30) at zend_vm_execute.h:2219
#16 0x28ed5371 in execute (op_array=0x2c19ad40) at zend_vm_execute.h:410
#17 0x28e8f4bd in zend_call_function (fci=0xbfbfcdf0, fci_cache=0xbfbfcdc0) at /usr/ports/lang/php5/work/php-5.4.6/Zend/zend_execute_API.c:958
#18 0x28ebc876 in zend_call_method (object_pp=0xbfbfceec, obj_ce=0x29447944, fn_proxy=0x29447a10, function_name=0x290955e4 "__call", function_name_len=6, retval_ptr_ptr=0xbfbfce60, param_count=2, arg1=0x2a41e034, arg2=0x2a39cb90)
    at /usr/ports/lang/php5/work/php-5.4.6/Zend/zend_interfaces.c:97
#19 0x28ece741 in zend_std_call_user_call (ht=3, return_value=0x2a398454, return_value_ptr=0x0, this_ptr=0x2943e98c, return_value_used=0) at /usr/ports/lang/php5/work/php-5.4.6/Zend/zend_object_handlers.c:870
#20 0x28ed68ba in zend_do_fcall_common_helper_SPEC (execute_data=0x29424604) at zend_vm_execute.h:642
#21 0x28ed796d in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER (execute_data=0x29424604) at zend_vm_execute.h:752
#22 0x28ed5371 in execute (op_array=0x2945d114) at zend_vm_execute.h:410
#23 0x28ea09b8 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/ports/lang/php5/work/php-5.4.6/Zend/zend.c:1289
#24 0x28e21b20 in php_execute_script (primary_file=0xbfbfe6b4) at /usr/ports/lang/php5/work/php-5.4.6/main/main.c:2473
#25 0x28fc2b13 in php_handler (r=0x2c10d568) at /usr/ports/lang/php5/work/php-5.4.6/sapi/apache2handler/sapi_apache2.c:667
#26 0x0807ca74 in ap_run_handler (r=0x2c10d568) at config.c:157
#27 0x0807d23d in ap_invoke_handler (r=0x2c10d568) at config.c:376
#28 0x0808dd6c in ap_internal_redirect (new_uri=0x2c10d550 "/.handler-www.php", r=0x2c104058) at http_request.c:554
#29 0x28778d6c in handler_redirect (r=0x2c104058) at mod_rewrite.c:4843
#30 0x0807ca74 in ap_run_handler (r=0x2c104058) at config.c:157
#31 0x0807d23d in ap_invoke_handler (r=0x2c104058) at config.c:376
#32 0x0808d3d3 in ap_process_request (r=0x2c104058) at http_request.c:282
#33 0x08089f11 in ap_process_http_connection (c=0x29ffc1f0) at http_core.c:190
#34 0x08085514 in ap_run_process_connection (c=0x29ffc1f0) at connection.c:43
#35 0x08085978 in ap_process_connection (c=0x29ffc1f0, csd=0x29ffc058) at connection.c:190
#36 0x08094357 in child_main (child_num_arg=11) at itk.c:726
#37 0x080946ac in make_child (s=0x28510f58, slot=11) at itk.c:850
#38 0x08094904 in perform_idle_server_maintenance (p=0x2850f018) at itk.c:985
#39 0x08094e28 in ap_mpm_run (_pconf=0x2850f018, plog=0x2853f018, s=0x28510f58) at itk.c:1189
#40 0x08064c8f in main (argc=Cannot access memory at address 0x2f9ca8a3
) at main.c:753

[2012-09-03 19:17 UTC] pajoye@php.net

Please try with 3.1.13

[2012-09-04 08:50 UTC] astatutov at gmail dot com

It seems that 3.1.13 fixes the problem. Thank you!

[2012-09-04 09:01 UTC] pajoye@php.net

Thank you for your bug report. This issue has already been fixed
in the latest released version of PHP, which you can download at 
http://www.php.net/downloads.php

[2012-09-04 09:01 UTC] pajoye@php.net

-Status: Open +Status: Closed -Assigned To: +Assigned To: pajoye

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