Bug #71573 [NEW]: Segfault (core dumped)

From: Date: Fri, 12 Feb 2016 07:27:26 +0000
Subject: Bug #71573 [NEW]: Segfault (core dumped)
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-199171@lists.php.net to get a copy of this message
From:             johan at x-tnd dot be
Operating system: Linux CentoOS 7
PHP version:      7.0.3
Package:          PDO PgSQL
Bug Type:         Bug
Bug description:Segfault (core dumped)

Description:
------------
I'm running a symfony2 command line script that sometimes cause a
segfault. It sounds like this is related to the pdo pgsql extension. I'm
using PHP 7.0.3 and extensions (from Remi's SCL repository) ans
PostgreSQL 9.2.14 (from centos updates repository).

Unfortunately, I'm not able to provide a script that reproduce this
random issue. My command line script is called every hour, it has failed
6 times on 3 days.

Actually, it seems that I've 2 different backtraces:
1-
 % gdb php70 core.7101
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/remi/php70/root/usr/bin/php...Reading symbols
from /usr/lib/debug/opt/remi/php70/root/usr/bin/php.debug...done.
done.

warning: core file may not match specified executable file.
[New LWP 7101]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `php70 -d memory_limit=10G app/console
tadaam:importfeed --no-agencies --source'.
Program terminated with signal 11, Segmentation fault.
#0  resetPQExpBuffer (str=str@entry=0x7fd86bcb5c18) at
pqexpbuffer.c:149
149				str->data[0] = '\0';
Missing separate debuginfos, use: debuginfo-install
bzip2-libs-1.0.6-13.el7.x86_64 cyrus-sasl-lib-2.1.26-19.2.el7.x86_64
expat-2.1.0-8.el7.x86_64 fontconfig-2.10.95-7.el7.x86_64
freetype-2.4.11-11.el7.x86_64 gd-last-2.1.1-2.el7.remi.x86_64
glibc-2.17-106.el7_2.1.x86_64 jbigkit-libs-2.0-11.el7.x86_64
keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.13.2-10.el7.x86_64
libX11-1.6.3-2.el7.x86_64 libXau-1.0.8-2.1.el7.x86_64
libXpm-3.5.11-3.el7.x86_64 libcom_err-1.42.9-7.el7.x86_64
libcurl-7.29.0-25.el7.centos.x86_64
libedit-3.0-12.20121213cvs.el7.x86_64 libgcc-4.8.5-4.el7.x86_64
libgcrypt-1.5.3-12.el7_1.1.x86_64 libgpg-error-1.12-3.el7.x86_64
libicu-50.1.2-15.el7.x86_64 libidn-1.28-4.el7.x86_64
libjpeg-turbo-1.2.90-5.el7.x86_64 libmcrypt-2.5.8-13.el7.x86_64
libpng-1.5.13-7.el7_2.x86_64 libselinux-2.2.2-6.el7.x86_64
libssh2-1.4.3-10.el7.x86_64 libstdc++-4.8.5-4.el7.x86_64
libtiff-4.0.3-14.el7.x86_64 libtool-ltdl-2.4.2-20.el7.x86_64
libvpx-1.3.0-5.el7_0.x86_64 libxcb-1.11-4.el7.x86_64
libxml2-2.9.1-6.el7_2.2.x86_64 libxslt-1.1.28-5.el7.x86_64
libzip-last-1.1-1.el7.remi.x86_64
ncurses-libs-5.9-13.20130511.el7.x86_64 nspr-4.10.8-2.el7_1.x86_64
nss-3.19.1-19.el7_2.x86_64 nss-softokn-freebl-3.16.2.3-13.el7_1.x86_64
nss-util-3.19.1-4.el7_1.x86_64 openldap-2.4.40-8.el7.x86_64
openssl-libs-1.0.1e-51.el7_2.2.x86_64 pcre-8.32-15.el7.x86_64
php70-php-pecl-apcu-5.1.3-1.el7.remi.x86_64
php70-php-pecl-apcu-bc-1.0.2-1.el7.remi.x86_64
php70-php-pecl-mysql-1.0.0-0.9.20151007git294ce3b.el7.remi.x86_64
php70-php-pecl-xdebug-2.4.0-0.8.RC4.el7.remi.x86_64
php70-php-pecl-zip-1.13.1-3.el7.remi.x86_64 sqlite-3.7.17-8.el7.x86_64
xz-libs-5.1.2-12alpha.el7.x86_64 zlib-1.2.7-15.el7.x86_64
(gdb) bt
#0  resetPQExpBuffer (str=str@entry=0x7fd86bcb5c18) at
pqexpbuffer.c:149
#1  0x00007fd870fed7ba in printfPQExpBuffer
(str=str@entry=0x7fd86bcb5c18, fmt=0x7fd870ff494e "unexpected
asyncStatus: %d\n") at pqexpbuffer.c:237
#2  0x00007fd870fe45b4 in PQgetResult (conn=conn@entry=0x7fd86bcb58c0)
at fe-exec.c:1726
#3  0x00007fd870fe460f in PQexecStart (conn=conn@entry=0x7fd86bcb58c0)
at fe-exec.c:1896
#4  0x00007fd870fe47c1 in PQexec (conn=0x7fd86bcb58c0,
query=0x7fd86be208c0 "DEALLOCATE pdo_stmt_00000005") at fe-exec.c:1805
#5  0x00007fd86e10d698 in pgsql_stmt_dtor (stmt=0x7fd869362540) at
/usr/src/debug/php-7.0.3/ext/pdo_pgsql/pgsql_statement.c:64
#6  0x00007fd871431b6a in php_pdo_free_statement (stmt=0x7fd869362540)
at /usr/src/debug/php-7.0.3/ext/pdo/pdo_stmt.c:2315
#7  0x00007fd8852edbe0 in zend_objects_store_free_object_storage
(objects=objects@entry=0x7fd885691bd0 <executor_globals+816>) at
/usr/src/debug/php-7.0.3/Zend/zend_objects_API.c:103
#8  0x00007fd8852a4ac3 in shutdown_executor () at
/usr/src/debug/php-7.0.3/Zend/zend_execute_API.c:357
#9  0x00007fd8852b395a in zend_deactivate () at
/usr/src/debug/php-7.0.3/Zend/zend.c:967
#10 0x00007fd885253cc1 in php_request_shutdown (dummy=dummy@entry=0x0)
at /usr/src/debug/php-7.0.3/main/main.c:1823
#11 0x00007fd88533c868 in do_cli (argc=10, argv=0x7fd885e1a4a0) at
/usr/src/debug/php-7.0.3/sapi/cli/php_cli.c:1142
#12 0x00007fd88513a26a in main (argc=10, argv=0x7fd885e1a4a0) at
/usr/src/debug/php-7.0.3/sapi/cli/php_cli.c:1345

2-
 % gdb php70 core.6209     
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/remi/php70/root/usr/bin/php...Reading symbols
from /usr/lib/debug/opt/remi/php70/root/usr/bin/php.debug...done.
done.

warning: core file may not match specified executable file.
[New LWP 6209]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `php70 -d memory_limit=10G app/console tadaam:pige
lbc -q --env=console'.
Program terminated with signal 11, Segmentation fault.
#0  resetPQExpBuffer (str=str@entry=0x7f3a5fab5ba8) at
pqexpbuffer.c:149
149				str->data[0] = '\0';
Missing separate debuginfos, use: debuginfo-install
bzip2-libs-1.0.6-13.el7.x86_64 cyrus-sasl-lib-2.1.26-19.2.el7.x86_64
expat-2.1.0-8.el7.x86_64 fontconfig-2.10.95-7.el7.x86_64
freetype-2.4.11-11.el7.x86_64 gd-last-2.1.1-2.el7.remi.x86_64
glibc-2.17-106.el7_2.1.x86_64 jbigkit-libs-2.0-11.el7.x86_64
keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.13.2-10.el7.x86_64
libX11-1.6.3-2.el7.x86_64 libXau-1.0.8-2.1.el7.x86_64
libXpm-3.5.11-3.el7.x86_64 libcom_err-1.42.9-7.el7.x86_64
libcurl-7.29.0-25.el7.centos.x86_64
libedit-3.0-12.20121213cvs.el7.x86_64 libgcc-4.8.5-4.el7.x86_64
libgcrypt-1.5.3-12.el7_1.1.x86_64 libgpg-error-1.12-3.el7.x86_64
libicu-50.1.2-15.el7.x86_64 libidn-1.28-4.el7.x86_64
libjpeg-turbo-1.2.90-5.el7.x86_64 libmcrypt-2.5.8-13.el7.x86_64
libpng-1.5.13-7.el7_2.x86_64 libselinux-2.2.2-6.el7.x86_64
libssh2-1.4.3-10.el7.x86_64 libstdc++-4.8.5-4.el7.x86_64
libtiff-4.0.3-14.el7.x86_64 libtool-ltdl-2.4.2-20.el7.x86_64
libvpx-1.3.0-5.el7_0.x86_64 libxcb-1.11-4.el7.x86_64
libxml2-2.9.1-6.el7_2.2.x86_64 libxslt-1.1.28-5.el7.x86_64
libzip-last-1.1-1.el7.remi.x86_64
ncurses-libs-5.9-13.20130511.el7.x86_64 nspr-4.10.8-2.el7_1.x86_64
nss-3.19.1-19.el7_2.x86_64 nss-softokn-freebl-3.16.2.3-13.el7_1.x86_64
nss-util-3.19.1-4.el7_1.x86_64 openldap-2.4.40-8.el7.x86_64
openssl-libs-1.0.1e-51.el7_2.2.x86_64 pcre-8.32-15.el7.x86_64
php70-php-pecl-apcu-5.1.3-1.el7.remi.x86_64
php70-php-pecl-apcu-bc-1.0.2-1.el7.remi.x86_64
php70-php-pecl-mysql-1.0.0-0.9.20151007git294ce3b.el7.remi.x86_64
php70-php-pecl-xdebug-2.4.0-0.8.RC4.el7.remi.x86_64
php70-php-pecl-zip-1.13.1-3.el7.remi.x86_64 sqlite-3.7.17-8.el7.x86_64
xz-libs-5.1.2-12alpha.el7.x86_64 zlib-1.2.7-15.el7.x86_64
(gdb) bt
#0  resetPQExpBuffer (str=str@entry=0x7f3a5fab5ba8) at
pqexpbuffer.c:149
#1  0x00007f3a64ded7ba in printfPQExpBuffer
(str=str@entry=0x7f3a5fab5ba8, fmt=0x7f3a64df494e "unexpected
asyncStatus: %d\n") at pqexpbuffer.c:237
#2  0x00007f3a64de45b4 in PQgetResult (conn=conn@entry=0x7f3a5fab5850)
at fe-exec.c:1726
#3  0x00007f3a64de460f in PQexecStart (conn=conn@entry=0x7f3a5fab5850)
at fe-exec.c:1896
#4  0x00007f3a64de47c1 in PQexec (conn=0x7f3a5fab5850,
query=0x7f3a58a5e500 "DEALLOCATE pdo_stmt_00000004") at fe-exec.c:1805
#5  0x00007f3a61f0d698 in pgsql_stmt_dtor (stmt=0x7f3a5fc5d1c0) at
/usr/src/debug/php-7.0.3/ext/pdo_pgsql/pgsql_statement.c:64
#6  0x00007f3a65231b6a in php_pdo_free_statement (stmt=0x7f3a5fc5d1c0)
at /usr/src/debug/php-7.0.3/ext/pdo/pdo_stmt.c:2315
#7  0x00007f3a7913bfa1 in zend_objects_store_del (object=0x7f3a5fc5d310)
at /usr/src/debug/php-7.0.3/Zend/zend_objects_API.c:182
#8  0x00007f3a79137474 in i_zval_ptr_dtor (zval_ptr=0x7f3a5fc19a38) at
/usr/src/debug/php-7.0.3/Zend/zend_variables.h:58
#9  zend_object_std_dtor (object=0x7f3a5fc198c0) at
/usr/src/debug/php-7.0.3/Zend/zend_objects.c:69
#10 0x00007f3a7913bbe0 in zend_objects_store_free_object_storage
(objects=objects@entry=0x7f3a794dfbd0 <executor_globals+816>) at
/usr/src/debug/php-7.0.3/Zend/zend_objects_API.c:103
#11 0x00007f3a790f2ac3 in shutdown_executor () at
/usr/src/debug/php-7.0.3/Zend/zend_execute_API.c:357
#12 0x00007f3a7910195a in zend_deactivate () at
/usr/src/debug/php-7.0.3/Zend/zend.c:967
#13 0x00007f3a790a1cc1 in php_request_shutdown (dummy=dummy@entry=0x0)
at /usr/src/debug/php-7.0.3/main/main.c:1823
#14 0x00007f3a7918a868 in do_cli (argc=8, argv=0x7f3a7a1b44a0) at
/usr/src/debug/php-7.0.3/sapi/cli/php_cli.c:1142
#15 0x00007f3a78f8826a in main (argc=8, argv=0x7f3a7a1b44a0) at
/usr/src/debug/php-7.0.3/sapi/cli/php_cli.c:1345

Let me know if I can provide you more informations on this issue.

Thank you very much!


-- 
Edit bug report at https://bugs.php.net/bug.php?id=71573&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=71573&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=71573&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=71573&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=71573&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=71573&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=71573&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=71573&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=71573&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=71573&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=71573&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=71573&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=71573&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=71573&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71573&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=71573&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=71573&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=71573&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=71573&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=71573&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=71573&r=mysqlcfg



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