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Date:  Wed, 13 Dec 2006 07:49:14 -0800
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Subject:  Segmentation Fault
From: richard@hddbroker.com (Richard Morris)

Hello all,

I was told this might be a better list to ask this question...

I was experimenting with the imap_* library functions trying to see if I 
could get a PHP script to access a folder on our IMAP server and I ran 
into a problem.

I was trying to get a simple script to work which simply opened a 
connection to the mail server and then closed it but when I ran the 
script it caused a segmentation fault on the imap_open line.  Here is 
the code I was trying to run:

<?php
   $mailbox = '{mail.hddbroker.com:143}INBOX';
   $username = 'xxx';
   $password = 'yyy';

   $mbox = imap_open($mailbox, $username, $password);
   imap_close($mbox);
?>

and on the CLI it produced the output: Segmentation fault (core dumped)

I configured my PHP installation with --enable-debug and using the core 
dump, I got the following backtrace:

#0  0x00144019 in SSL_SESSION_hash () from /lib/libssl.so.4
#1  0x001ca484 in lh_free () from /lib/libcrypto.so.4
#2  0x001ca5f3 in lh_delete () from /lib/libcrypto.so.4
#3  0x00148141 in SSL_CTX_get_timeout () from /lib/libssl.so.4
#4  0x001ca56e in lh_retrieve () from /lib/libcrypto.so.4
#5  0x001481f7 in SSL_CTX_flush_sessions () from /lib/libssl.so.4
#6  0x001441a3 in SSL_CTX_free () from /lib/libssl.so.4
#7  0x005185ac in ssl_close () from /usr/lib/libc-client.so.0
#8  0x0051851f in ssl_close () from /usr/lib/libc-client.so.0
#9  0x005176c3 in ssl_aopen () from /usr/lib/libc-client.so.0
#10 0x0054a697 in imap_open () from /usr/lib/libc-client.so.0
#11 0x00523a90 in mail_open () from /usr/lib/libc-client.so.0
#12 0x0814dcfc in zif_imap_open (ht=3, return_value=0xb7c8bc9c, 
return_value_ptr=0x0, this_ptr=0x0, return_value_used=1)
     at /usr/local/src/php-5.2.0/ext/imap/php_imap.c:780
#13 0x08332c92 in zend_do_fcall_common_helper_SPEC 
(execute_data=0xbfe372e0) at 
/usr/local/src/php-5.2.0/Zend/zend_vm_execute.h:200
#14 0x08332419 in execute (op_array=0xb7c8b68c) at 
/usr/local/src/php-5.2.0/Zend/zend_vm_execute.h:92
#15 0x0831aa9b in zend_execute_scripts (type=8, retval=0x0, 
file_count=3) at /usr/local/src/php-5.2.0/Zend/zend.c:1097
#16 0x082e4a51 in php_execute_script (primary_file=0xbfe397d0) at 
/usr/local/src/php-5.2.0/main/main.c:1758
#17 0x08393462 in main (argc=2, argv=0xbfe398a4) at 
/usr/local/src/php-5.2.0/sapi/cli/php_cli.c:1108


It doesn't mean too much to me but I thought someone might be able to 
understand it.  Here is some additional details that might be needed:

PHP Version: PHP 5.2.0 (cli) (built: Nov  3 2006 06:07:03)
OS: CentOS 4.4 i386
RPM packages installed:
   - openssl-0.9.7a-43.14
   - openssl-devel-0.9.7a-43.14
   - libc-client-2002e-14
   - libc-client-devel-2002e-14

There was a bug opened that has the same segmentation problem but the 
scenario seems to be different including using a different version of 
PHP.  PHP Bug #39726 (http://bugs.php.net/bug.php?id=39726)

If there are any other details I can provide or if someone could point 
my in another direction that would help, I would really appreciate it.

Thank you.

-- 
Richard Morris
HDD Broker, Inc.

     Toll-Free: +1 866 960-3331
International: +1 250 474-6022
           Fax: +1 250 474-6099
        E-Mail: richard@hddbroker.com
      Web Site: www.hddbroker.com