0001539: httpd causes 99.6% CPU load and hangs in CGI IO loop

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Category

Severity

Reproducibility

Date Submitted

Last Update

0001539

[BusyBox] Networking Support

major

always

10-17-07 06:29

02-13-08 00:31

Reporter

alexsv

View Status

public

Assigned To

BusyBox

Priority

normal

Resolution

fixed

Status

closed

Product Version

svn

Summary

0001539: httpd causes 99.6% CPU load and hangs in CGI IO loop

Description

Simple CGI shell script provided in additional info causes httpd from version 1.7.2 to produse 99.6% CPU load and hangs in CGI IO loop.
When you press submit button, first invoke of `cat` causes script hangup.
The same script works fine with BusyBox 1.1.3.
Arch is Cirrus ARM EP9302.
Build with GCC 3.4.

Additional Information

#! /bin/sh
echo 'Content-type: text/html
'
echo '<html><body>'

  if test "$REQUEST_METHOD" = POST -a 0 -lt 0$CONTENT_LENGTH; then

    echo "doing read...
"
    temp_str=`cat`
    echo "read
"
  fi

echo "<form action=\"test.cgi\" method=\"post\" name=\"mainform\">

<input name=\"newlogin\" size=\"20\" maxlength=\"16\" type=\"text\">

<input name=\"newpwd\" size=\"20\" maxlength=\"16\" type=\"password\">

<input value=\"Save..\" class=\"button\" type=\"submit\">\
</form>"
echo '</body></html>'

Attached Files

Relationships

Notes
(0002829) vda 10-17-07 08:31	Indeed, it loops. Try this, it worked for me: http://busybox.net/downloads/fixes-1.7.2/busybox-1.7.2-httpd.patch [^]

(0002830) alexsv 10-17-07 13:21	Yes, it works for me too. Thanks!

(0004344) vda 02-13-08 00:31	Fixed sometime ago in svn before 1.9.0.

Issue History
Date Modified	Username	Field	Change
10-17-07 06:29	alexsv	New Issue
10-17-07 06:29	alexsv	Status	new => assigned
10-17-07 06:29	alexsv	Assigned To	=> BusyBox
10-17-07 08:31	vda	Note Added: 0002829
10-17-07 08:31	vda	Status	assigned => feedback
10-17-07 13:21	alexsv	Note Added: 0002830
02-13-08 00:31	vda	Status	feedback => closed
02-13-08 00:31	vda	Note Added: 0004344
02-13-08 00:31	vda	Resolution	open => fixed