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Bug #20896 php -w hangs indefinitely at 100% CPU
Submitted: 2002-12-09 00:03 UTC Modified: 2003-08-12 20:30 UTC
Votes:4
Avg. Score:4.0 ± 0.7
Reproduced:4 of 4 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (25.0%)
From: carl at thep dot lu dot se Assigned:
Status: Closed Package: CGI/CLI related
PHP Version: 4.3.3RC2-dev OS: SuSE 7.2
Private report: No CVE-ID: None
View Developer Edit
 [2002-12-09 00:03 UTC] carl at thep dot lu dot se 
Not quite a crash, but I found no better category (time to add one for
the CLI SAPI?)
A simple
php -w filename.php
will on my system output the things it should, but then hang forever at
full CPU consumption.

[PHP Modules]
ctype
gd
mysql
overload
pcre
pgsql
posix
session
standard
tokenizer
xml
zlib

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 [2002-12-11 02:20 UTC] ljpersson at hotmail dot com 
Also repeatable on SuSE 8.0
 [2002-12-11 02:38 UTC] sniper@php.net 
This happens also with the -s option. And with CGI binary too. Basically the reason is that the -s / -w options use some hackish way to accomplish the tasks. Which seems to work on some systems though..
 [2002-12-13 05:46 UTC] ljpersson at hotmail dot com 
Same problem exists in 4.3.0RC3
 [2002-12-22 12:19 UTC] andrew at evilwalrus dot com 
Works fine for me on WinXP SP1 with 4.4.0-dev (CVS).
 [2003-01-07 14:31 UTC] internet at choq dot fm 
I have a similar problem on Slackware 8.1, on a kernel 2.4.20.

PHP version 4.3 Release.

When I start the server everything is fine for a little while. After a bit the CPU load increases dramatically and dosn't stop. Top shows me that the httpd processes are in a infinite loop. Also I can'T kill them at all, even with a kill -HUP.

uptime : 
15:28:55 up 18:21,  3 users,  load average: 47.15, 46.94, 44.35

with 46 looped httpd process.

I removed all the php scripts on the server and everything runs fine afdterwards, so it's definately caused by php.

I will recompile PHP and apache later tonight to see if this might be a problem between the kernel/apache/php4.

I will try posting more info as well. I know that mysql, gd, freetype, zlib, libpng, libjpeg are installed but I don't remmeber the others.
 [2003-01-08 16:59 UTC] sthomas at townnews dot com 
This bug also affects PHP 4.3.0 Final, at least on Redhat 7.3 and Redhat 8.0. Pretty odd to have 100% cpu usage when it's already finished with the whitespace stripping or syntax hilighting.
 [2003-08-12 19:56 UTC] iliaa@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip
 [2003-08-12 20:30 UTC] iliaa@php.net 
This bug has been fixed in CVS.

In case this was a PHP problem, snapshots of the sources are packaged
every three hours; this change will be in the next snapshot. You can
grab the snapshot 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 in short time.
 
Thank you for the report, and for helping us make PHP better.
 
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