Bug 129301 - Running as ftp server, when ftp commands like ls, get or put are sent by a connected client to the server, kernel panics
Running as ftp server, when ftp commands like ls, get or put are sent by a co...
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: tux (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Ingo Molnar
Brian Brock
Depends On:
Blocks: 170445
  Show dependency treegraph
Reported: 2004-08-05 22:36 EDT by Michael Kearey
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2005-09-15 13:40:13 EDT
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Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
tuxcrash.jpg (151.56 KB, image/jpeg)
2005-05-12 10:27 EDT, Bastien Nocera
no flags Details

  None (edit)
Description Michael Kearey 2004-08-05 22:36:04 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.3)

Description of problem:
When running tux as an ftp server, client connections are successful.
However when a directory list is requested, the host tux is running on
has a kernel panic. A 'get' also results in kernel panic. Other
commands such as 'rhelp' do not result a kernel panic, with the server
responding 'Ok'.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Install tux
2. Start tux - service tux start
3. As per the supplied documentation, set tux to do both http and ftp:
echo "" > /proc/net/tux/0/listen/0
echo "" > /proc/net/tux/0/listen/1
service tux restart
4. Using any ftp client, connect to server, try 'ls, dir or get' ftp

Actual Results:  ftp command fails and kernel panics

Expected Results:  ftp commands from client sent to server, server
responds to client, and kernel remains calm.

Additional info:

I have been running on a single hyperthreading Pentium 4 processor.
Using either SMP or uni-processor kernel results in the same kernel panic.

Have confirmed that problem occurs when running these kernels (UP or SMP):

Also have found that a Red Hat Enterprise 4 (Beta) installation
running kernel 2.6 does not have the problem.
Comment 1 Michael Kearey 2004-08-05 22:41:34 EDT
Am currently unable to use netdump, as my network card is not supported. 

I will try to setup a serial connection to grab a kernel dump if
requested. A sysreport is ready if it is needed.
Comment 2 Bastien Nocera 2005-05-12 10:27:09 EDT
Created attachment 114296 [details]

Screendump of the crash. The double fault means that the user hasn't been able
to gather any dumps or other logs.
Comment 3 Ingo Molnar 2005-09-15 13:40:13 EDT
the FTP server is disabled by default (it was devel code in RHEL3 and is not
supported), so i'm closing this bug with WONTFIX. It works in RHEL4.

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