#36206 [Fbk-Opn]: LDAP in nsswitch.conf causes segfault when resolving hostnames in PHP
ID: 36206 User updated by: arnout at argeweb dot nl Reported By: arnout at argeweb dot nl -Status: Feedback +Status: Open Bug Type: CGI related Operating System: freeBSD 5.4 PHP Version: 5.1.2 New Comment: [EMAIL PROTECTED]: ~ $ host example.com example.com has address 192.0.34.166 top works fine ps aux works fine No segfaults there... Previous Comments: [2006-02-01 12:33:42] [EMAIL PROTECTED] Please try to run `top`, `ps aux` and `host example.com`. Do they work fine or segfault too? I'm asking because of this: http://lists.freebsd.org/pipermail/freebsd-bugs/2004-April/006201.html [2006-01-30 12:25:00] arnout at argeweb dot nl This just in: The script does not terminate. It ends like it's supposed to. The segfault is put out when the scripts terminates. I don't know if it's a child process that dies, or that the segfault resides in a buffer untill termination or something. [EMAIL PROTECTED]: / # echo ? echo gethostbyname( 'php.net' ); ? | php 64.246.30.37Segmentation fault (core dumped) I seem to have judged to fast before. But still: I can't surpress this error. It's ugly! [2006-01-30 12:01:41] arnout at argeweb dot nl status change [2006-01-30 12:00:33] oersoep at gmail dot com #0 0x in ?? () #1 0x292ff7a5 in ?? () from /usr/local/lib/nss_ldap.so.1 #2 0x2930a4c0 in ?? () from /usr/local/lib/nss_ldap.so.1 #3 0x2817d760 in ?? () from /libexec/ld-elf.so.1 #4 0x2817d5d8 in ?? () from /libexec/ld-elf.so.1 #5 0x292ff740 in ?? () from /usr/local/lib/nss_ldap.so.1 #6 0x28162730 in _rtld_error () from /libexec/ld-elf.so.1 #7 0x293086c9 in _fini () from /usr/local/lib/nss_ldap.so.1 #8 0x2816380b in find_symdef () from /libexec/ld-elf.so.1 #9 0x28163e6a in dlclose () from /libexec/ld-elf.so.1 #10 0x2845b53c in _nsdbtput () from /lib/libc.so.5 #11 0x2845aef0 in endhostent () from /lib/libc.so.5 #12 0x2845b5bb in _nsdbtput () from /lib/libc.so.5 #13 0x2847e1a5 in __cxa_finalize () from /lib/libc.so.5 #14 0x2847dec6 in exit () from /lib/libc.so.5 #15 0x08130cc5 in main () [2006-01-30 11:55:17] [EMAIL PROTECTED] Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to Open. Thank you for helping us make PHP better. The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/36206 -- Edit this bug report at http://bugs.php.net/?id=36206edit=1
#36206 [Fbk-Opn]: LDAP in nsswitch.conf causes segfault when resolving hostnames in PHP
ID: 36206
User updated by: arnout at argeweb dot nl
Reported By: arnout at argeweb dot nl
-Status: Feedback
+Status: Open
Bug Type: CGI related
Operating System: freeBSD 5.4
PHP Version: 5.1.2
New Comment:
status change
Previous Comments:
[2006-01-30 12:00:33] oersoep at gmail dot com
#0 0x in ?? ()
#1 0x292ff7a5 in ?? () from /usr/local/lib/nss_ldap.so.1
#2 0x2930a4c0 in ?? () from /usr/local/lib/nss_ldap.so.1
#3 0x2817d760 in ?? () from /libexec/ld-elf.so.1
#4 0x2817d5d8 in ?? () from /libexec/ld-elf.so.1
#5 0x292ff740 in ?? () from /usr/local/lib/nss_ldap.so.1
#6 0x28162730 in _rtld_error () from /libexec/ld-elf.so.1
#7 0x293086c9 in _fini () from /usr/local/lib/nss_ldap.so.1
#8 0x2816380b in find_symdef () from /libexec/ld-elf.so.1
#9 0x28163e6a in dlclose () from /libexec/ld-elf.so.1
#10 0x2845b53c in _nsdbtput () from /lib/libc.so.5
#11 0x2845aef0 in endhostent () from /lib/libc.so.5
#12 0x2845b5bb in _nsdbtput () from /lib/libc.so.5
#13 0x2847e1a5 in __cxa_finalize () from /lib/libc.so.5
#14 0x2847dec6 in exit () from /lib/libc.so.5
#15 0x08130cc5 in main ()
[2006-01-30 11:55:17] [EMAIL PROTECTED]
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32
Once you have generated a backtrace, please submit it to this bug
report and change the status back to Open. Thank you for helping
us make PHP better.
[2006-01-30 11:41:10] arnout at argeweb dot nl
Description:
Any hostname resolve in PHP causes a segmentation fault.
It only happens when this file contains the ldap keyword.
When removed, everything works fine.
Everything works great when using modphp. It only happens when using
the executable.
[EMAIL PROTECTED]: / # cat /etc/nsswitch.conf
group: files ldap
group_compat: nis
hosts: files dns
networks: files
passwd: files
passwd_compat: nis
shells: files
We've seen it on two seperate systems.
It's on PHP versions 5.0.5, 5.1.1 and 5.1.2
Server #1:
openldap 2.2.30
nss_ldap 1.244
php 5.0.5
FreeBSD 5.4-RELEASE-p8
Server #2:
nss_ldap-1.239
openldap-client-2.2.27
php 5.1.2
FreeBSD 5.4-RELEASE-p8
Reproduce code:
---
[EMAIL PROTECTED]: / # echo ? echo gethostbyname('php.net'); ? | php
[EMAIL PROTECTED]: / # echo ? mysql_connect( 'badgerbadger', '', '' ); ? |
php
#!/usr/local/bin/php
?php
// this
echo gethostbyname( 'php.net' );
// AND this too
mysql_connect( 'blahdieblah', '', '' );
// and anything that resolves.
?
Expected result:
An IP-address and an error because the mysql host doesn't exist.
Actual result:
--
Segmentation fault on any line that resolves a hostname.
--
Edit this bug report at http://bugs.php.net/?id=36206edit=1
