#36206 [Com]: LDAP in nsswitch.conf causes segfault when resolving hostnames in PHP

ID: 36206 Comment by: oersoep at gmail dot com Reported By: arnout at argeweb dot nl Status: Feedback Bug Type: CGI related Operating System: freeBSD 5.4 PHP Version: 5.1.2 New Comment: #0 0x00000000 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 () Previous Comments: ------------------------------------------------------------------------ [2006-01-30 11:55:17] tony2001@php.net 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. root@host: / # 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: --------------- root@host: / # echo "<? echo gethostbyname('php.net'); ?>" | php root@host: / # 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=36206&edit=1