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Bug #47829 Segmentation fault on startup with PDO Firebird compiled in
Submitted: 2009-03-29 16:11 UTC Modified: 2009-12-15 00:52 UTC
Votes:4
Avg. Score:4.5 ± 0.9
Reproduced:3 of 3 (100.0%)
Same Version:1 (33.3%)
Same OS:1 (33.3%)
From: info at programmiernutte dot net Assigned:
Status: Closed Package: PDO related
PHP Version: 5.3.0RC1 OS: Debian Etch x86_64
Private report: No CVE-ID: None
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 [2009-03-29 16:11 UTC] info at programmiernutte dot net 
Description:
------------
I am getting Segmentation fault on startup, no matter if SAPI apache 2 or CLI. Same Version of PHP and same Firebird Version (2.1.1.) are running flawlessly on my G4 Mac on Mac OS X 10.4.11, so maybe this is 64bit-related? 
I used gdb to track this down to PDO Firebird Initialisation Startup:

(gdb) run
Starting program: /usr/src/php-5.3.0RC1/sapi/cli/php 
Failed to read a valid object file image from memory.
[Thread debugging using libthread_db enabled]
[New Thread 47013927445712 (LWP 16824)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47013927445712 (LWP 16824)]
zend_declare_class_constant_long (ce=0x0, name=0xa6a5ef "FB_ATTR_DATE_FORMAT", name_length=19, value=1000)
    at /usr/src/php-5.3.0RC1/Zend/zend_API.c:3210
3210            if (ce->type & ZEND_INTERNAL_CLASS) {
(gdb) where
#0  zend_declare_class_constant_long (ce=0x0, name=0xa6a5ef "FB_ATTR_DATE_FORMAT", name_length=19, value=1000)
    at /usr/src/php-5.3.0RC1/Zend/zend_API.c:3210
#1  0x00000000005190c2 in zm_startup_pdo_firebird (type=<value optimized out>, module_number=<value optimized out>)
    at /usr/src/php-5.3.0RC1/ext/pdo_firebird/pdo_firebird.c:58
#2  0x000000000061cfbe in zend_startup_module_ex (module=0xcafb10) at /usr/src/php-5.3.0RC1/Zend/zend_API.c:1593
#3  0x0000000000625f05 in zend_hash_apply (ht=0xc62e80, apply_func=0x61cec0 <zend_startup_module_ex>)
    at /usr/src/php-5.3.0RC1/Zend/zend_hash.c:673
#4  0x000000000061d89a in zend_startup_modules () at /usr/src/php-5.3.0RC1/Zend/zend_API.c:1642
#5  0x00000000005c827f in php_module_startup (sf=<value optimized out>, additional_modules=0x0, num_additional_modules=0)
    at /usr/src/php-5.3.0RC1/main/main.c:1952
#6  0x00000000006a0e5d in php_cli_startup (sapi_module=0x0) at /usr/src/php-5.3.0RC1/sapi/cli/php_cli.c:370
#7  0x00000000006a155f in main (argc=1, argv=0x7fff63c23928) at /usr/src/php-5.3.0RC1/sapi/cli/php_cli.c:742

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 [2009-03-29 21:51 UTC] info at programmiernutte dot net 
I did some more experimenting, and I figured that the Crash does not occur when PDO Firebird is compiled as a shared module and loaded as extension. PDO Extension seems to work.
 [2009-04-30 10:48 UTC] jani@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/
 [2009-05-01 07:29 UTC] info at programmiernutte dot net 
Same thing:

localhost:~/php5.2-200905010630/sapi/cli# ./php 
Segmentation fault

gdb trace:
(gdb) run
Starting program: /root/php5.2-200905010630/sapi/cli/php 
warning: no loadable sections found in added symbol-file system-
supplied DSO at 0x7ffff79fe000
[Thread debugging using libthread_db enabled]
[New Thread 47269144047376 (LWP 16865)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47269144047376 (LWP 16865)]
0x000000000062c1aa in _zend_hash_add_or_update (ht=0xa8f740, 
arKey=0x8bbb92 "firebird", nKeyLength=8, pData=0x7ffff7995060, 
    nDataSize=8, pDest=0x0, flag=2) at /root/php5.2-
200905010630/Zend/zend_hash.c:218
218             p = ht->arBuckets[nIndex];
(gdb) where
#0  0x000000000062c1aa in _zend_hash_add_or_update (ht=0xa8f740, 
arKey=0x8bbb92 "firebird", nKeyLength=8, 
    pData=0x7ffff7995060, nDataSize=8, pDest=0x0, flag=2) at 
/root/php5.2-200905010630/Zend/zend_hash.c:218
#1  0x000000000052718f in php_pdo_register_driver (driver=0xa661c0) at 
/root/php5.2-200905010630/ext/pdo/pdo.c:184
#2  0x00000000005311c0 in zm_startup_pdo_firebird (type=<value 
optimized out>, module_number=9157530)
    at /root/php5.2-200905010630/ext/pdo_firebird/pdo_firebird.c:58
#3  0x00000000006257c3 in zend_startup_module_ex (module=0xae52d0) at 
/root/php5.2-200905010630/Zend/zend_API.c:1472
#4  0x000000000062a995 in zend_hash_apply (ht=0xa93bc0, 
apply_func=0x6256c0 <zend_startup_module_ex>)
    at /root/php5.2-200905010630/Zend/zend_hash.c:673
#5  0x0000000000623fea in zend_startup_modules () at /root/php5.2-
200905010630/Zend/zend_API.c:1519
#6  0x00000000005deebd in php_module_startup (sf=<value optimized 
out>, additional_modules=0x0, num_additional_modules=0)
    at /root/php5.2-200905010630/main/main.c:1843
#7  0x00000000006a171d in php_cli_startup (sapi_module=0x0) at 
/root/php5.2-200905010630/sapi/cli/php_cli.c:386
#8  0x00000000006a1e11 in main (argc=1, argv=0x7ffff7995688) at 
/root/php5.2-200905010630/sapi/cli/php_cli.c:745
 [2009-09-03 20:53 UTC] kuzvesov at list dot ru 
I have this bug in the following 32-bit configuration, both using ibase_* functions and PDO extension, php CLI.

Configuration:

uname:
FreeBSD dbserv 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Feb 24 19:59:52 UTC 2008     root@logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

pkg_info:
firebird-client-2.0.3_2 Firebird-2 database client
firebird-server-2.0.3_2 Firebird-2 relational database (server)
php5-5.2.6_2        PHP Scripting Language
php5-interbase-5.2.6_2 The interbase shared extension for php
php5-pdo-5.2.6_2    The pdo shared extension for php
php5-pdo_firebird-5.2.6_2 The pdo_firebird shared extension for php


After moving to FreeBSD 7.2 amd64, php 5.2.9, the bug is still there.
 [2009-11-13 00:41 UTC] felipe@php.net 
Please try using this snapshot:

  http://snaps.php.net/php5.3-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/
 [2009-11-20 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2009-12-15 00:50 UTC] felipe@php.net 
Please try using this snapshot:

  http://snaps.php.net/php5.3-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/
 [2009-12-15 00:52 UTC] felipe@php.net 
This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.

Already fixed in bug #48980.
 
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