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Bug #16836 Crash of Webserver
Submitted: 2002-04-25 18:55 UTC Modified: 2002-07-08 12:47 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: mac at w4b dot at Assigned:
Status: Closed Package: MySQL related
PHP Version: 4.2.0 OS: Linux debian/woody
Private report: No CVE-ID: None
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From: mac at w4b dot at
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 [2002-04-25 18:55 UTC] mac at w4b dot at
Dear PHP Developers!

May there be some kind of error in build in MySql support?

Backtracing tells me:
(gdb) bt
#0  0x00000000 in ?? ()
#1  0x40ba9682 in __db_err () from /lib/libdb.so.3
#2  0x40ba2e1d in db_open () from /lib/libdb.so.3
#3  0x40b8dd0a in _nss_db_getprotobynumber_r () from /lib/libnss_db.so.2
#4  0x40b8defa in _nss_db_endservent () from /lib/libnss_db.so.2
#5  0x40b8e181 in _nss_db_getservbyname_r () from /lib/libnss_db.so.2
#6  0x401bbac3 in getservbyname_r () from /lib/libc.so.6
#7  0x401bb971 in getservbyname () from /lib/libc.so.6
#8  0x402cc752 in OnMySQLPort (entry=0x80c9768, new_value=0x0,
    new_value_length=3, mh_arg1=0x0, mh_arg2=0x0, mh_arg3=0x0, stage=1)
    at php_mysql.c:285
#9  0x402b2ac1 in zend_register_ini_entries (ini_entry=0x403b7148,
    module_number=7) at zend_ini.c:150
#10 0x402cc821 in zm_startup_mysql (type=1, module_number=7) at php_mysql.c:334
#11 0x402a89ec in zend_startup_module (module=0x403b7100) at zend_API.c:1007
#12 0x402b7d16 in php_startup_extensions (ptr=0x403b68b4, count=8)
    at main.c:831
#13 0x402c41f6 in php_startup_internal_extensions () at internal_functions.c:60
#14 0x402b821c in php_module_startup (sf=0x403b1680) at main.c:989
#15 0x402b3e03 in php_apache_startup (sapi_module=0x403b1680) at mod_php4.c:279
#16 0x402b4e94 in php_init_handler (s=0x8088a2c, p=0x8088a04) at mod_php4.c:836
#17 0x0805549e in ap_init_modules ()
#18 0x0805d98a in main ()

Its Apache 1.3.23 and PHP 4.2.0 compiled with mysql and debug.

Best Regards,


MaC

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 [2002-04-25 22:07 UTC] sniper@php.net
Please get fresh sources of PHP 4.2.0 and replace
the configure with this:

http://www.edin.dk/php/configure.gz

This might be yet another side effect of the buggy autoconf 2.52 which was used to generate the configure in the distribution package.

 [2002-04-26 09:10 UTC] mac at w4b dot at
Dear Sniper,

yet PHP Apache does not crash on requesting phpinfo() but does if I try to make MySql connection.
I took sources from download section at php.net (Apr.22) and the config you told me.
strace tells me:
open("/lib/libdb.so.3", O_RDONLY)       = 5
read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300*\0"..., 1024) = 1024
fstat64(5, {st_mode=S_IFREG|0644, st_size=233488, ...}) = 0
old_mmap(NULL, 236572, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x40411000
mprotect(0x4044a000, 3100, PROT_NONE)   = 0
old_mmap(0x4044a000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x38000) = 0x4044a000
close(5)                                = 0
munmap(0x4037e000, 22601)               = 0
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++

gdb shows:

#0  0x00000000 in ?? ()
#1  0x40428682 in __db_err () from /lib/libdb.so.3
#2  0x40421e1d in db_open () from /lib/libdb.so.3
#3  0x4040cd0a in _nss_db_getprotobynumber_r () from /lib/libnss_db.so.2
#4  0x4040cefa in _nss_db_endservent () from /lib/libnss_db.so.2
#5  0x4040d181 in _nss_db_getservbyname_r () from /lib/libnss_db.so.2
#6  0x401bbac3 in getservbyname_r () from /lib/libc.so.6
#7  0x401bb971 in getservbyname () from /lib/libc.so.6
#8  0x402b87cd in mysql_once_init () at libmysql.c:1022
#9  0x402b871c in mysql_init (mysql=0x80f114c) at libmysql.c:989
#10 0x402b3fe5 in php_mysql_do_connect (ht=3, return_value=0x80f10b4,
    this_ptr=0x0, return_value_used=1, persistent=0) at php_mysql.c:661
#11 0x402b41ed in zif_mysql_connect (ht=3, return_value=0x80f10b4, this_ptr=0x0,
    return_value_used=1) at php_mysql.c:714
#12 0x4028a007 in execute (op_array=0x8102848) at ./zend_execute.c:1598
#13 0x4028a211 in execute (op_array=0x80d9a1c) at ./zend_execute.c:1638
#14 0x40297dce in zend_execute_scripts (type=8, retval=0x0, file_count=3)
    at zend.c:810
#15 0x402a5556 in php_execute_script (primary_file=0xbffff968) at main.c:1381
#16 0x402a114e in apache_php_module_main (r=0x80d2fc4, display_source_mode=0)
    at sapi_apache.c:90
#17 0x402a1c4e in send_php (r=0x80d2fc4, display_source_mode=0, filename=0x0)
    at mod_php4.c:575
#18 0x402a1cb2 in send_parsed_php (r=0x80d2fc4) at mod_php4.c:590

BR


MaC
 [2002-04-26 09:26 UTC] mfischer@php.net
Please provide the full configure line of PHP. Also can you paste the relevant lines of the /etc/services file containing mysql? Btw, which version of libc are you using exactly (use dpkg -s libc6|grep Version ) ?

It looks like a problem with your system libraries, not related to php or mysql at all.
 [2002-04-26 09:40 UTC] mac at w4b dot at
Dear Developers,

thank you a lot for quick reply.

I tried it using minimal configuration:
./configure --enable-debug --with-mysql --with-apxs=/usr/bin/apxs

Apache is libthread linked.
Libc is Version: 2.2.5-4

MySql lines from /etc/services:
grep mysql /etc/services
mysql           3306/tcp                        # MySQL
mysql           3306/udp                        # MySQL

I think myself that it is a lib problem, but I reinstalled all libs, made hardware check before writing this bug report :(
All libs are from woody, apt installed.

BR

MaC
 [2002-04-26 14:10 UTC] sniper@php.net
Does PHP 4.1.2 work any better then?

 [2002-04-26 15:46 UTC] mac at w4b dot at
Nope, has same effect :(

How can I check that libdb2 is ok?

Maybe some bug in that lib?

BG

MaC
 [2002-07-07 22:11 UTC] sniper@php.net
Please try this snapshot:

http://snaps.php.net/php4-latest.tar.gz

 [2002-07-08 12:42 UTC] mac at w4b dot at
Yet it does work, thanx a lot!


BR

MaC
 [2002-07-08 12:47 UTC] eru@php.net
This bug has been fixed in CVS. You can grab a snapshot of the
CVS version at http://snaps.php.net/. In case this was a documentation 
problem, the fix will show up soon at http://www.php.net/manual/.
In case this was a PHP.net website problem, the change will show
up on the PHP.net site and on the mirror sites.
Thank you for the report, and for helping us make PHP better.


 [2021-04-06 10:19 UTC] git@php.net
Automatic comment on behalf of 
Revision: https://github.com/php/pecl-system-expect/commit/5578d898371b7fb55bbaa934c21b1acd374157f8
Log: Fixed bug #16836 (introduce expect.match_max .ini parameter for asterisk match buffer size)
 
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