From: stefan dot launicke at gate8 dot de
Operating system: Linux 2.6.19
PHP version: 5.2.10
PHP Bug Type: Program Execution
Bug description: external program execution hangs, process sometimes never
exits
Description:
------------
When doing a external function call using either passthru(),
proc_open() or system(), the external process hangs most of the time.
Sometimes it works. Only appears when run through mod_php / apache2.
Calling the script in the shell with CLI always works.
ps shows:
11606 ? Sl 0:00 /usr/bin/pdftk
No errors in any logs, no segfaults. top
Please Note:
- doing the exact same call in a Perl script running in Apache always
works.
- calling the perl script which does the funtion call from within php
will crash again with ps (passthru example):
11674 ? S 0:00 sh -c cd '/data/usr/inauris.com/tmp' ;
/data/usr/inauris.com/tmp/test3.pl
11675 ? S 0:00 /usr/bin/perl -w
/data/usr/inauris.com/tmp/test3.pl
11676 ? Sl 0:00 /usr/bin/pdftk
/data/usr/inauris.com/management/home/app/pdf...
Apache Version: 2.2.11, Worker MPM
Reproduce code:
---------------
passthru ("/usr/bin/pdftk /data/testin.pdf fill_form /data/workdata output
/data/testout.pdf flatten");
Expected result:
----------------
exec & return
Actual result:
--------------
hang
--
Edit bug report at http://bugs.php.net/?id=49265&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=49265&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=49265&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=49265&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=49265&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=49265&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=49265&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=49265&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=49265&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=49265&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=49265&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=49265&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=49265&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=49265&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=49265&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49265&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=49265&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=49265&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=49265&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=49265&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=49265&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=49265&r=mysqlcfg
