Bug 58620 – kernel oops in ip_conntrack

Bug 58620 - kernel oops in ip_conntrack

Summary:	kernel oops in ip_conntrack

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	kernel (Show other bugs)
Sub Component:
Version:	7.2
Hardware:	i686 Linux

Priority	medium Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Arjan van de Ven
QA Contact:	Brian Brock
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2002-01-21 12:51 EST by Michael Young
Modified:	2007-04-18 12:39 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2003-01-13 06:53:11 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Output from ksymoops (9.69 KB, text/plain) 2002-01-21 12:53 EST, Michael Young	no flags	Details
ksymoops from 2.4.9-21enterprise (7.24 KB, text/plain) 2002-01-30 05:53 EST, Michael Young	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Michael Young 2002-01-21 12:51:46 EST

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.2.1) Gecko/20010901

Description of problem:
I have a couple of machines running squid under fairly heavy loads, which are
crashing every day or so (system freezes completely - requiring a power cycle).
The systems have 2 1Ghz processors, running 2.4.9-13enterprise using iptables. I
have now obtained a full stack trace from a serial console, and attach the
output from ksymoops. This  seems to point to a problem in ip_conntrack.

Version-Release number of selected component (if applicable): 2.4.9-13enterprise


How reproducible:
Always

Steps to Reproduce:
1.run squid under a heavy load
2.wait
	

Additional info:

Comment 1 Michael Young 2002-01-21 12:53:13 EST

Created attachment 43034 [details]
Output from ksymoops

Comment 2 Michael Young 2002-01-30 05:50:52 EST

The problem is still in 2.4.9-21enterprise, though the crash was slightly
different this time (see new attachment). If I change the firewall so it doesn't
use connection tracking (and make sure ip_conntrack and dependent modules aren't
loaded) then 2.4.9-13enterprise seems to be stable. I also tried a mainline
kernel 2.4.18-pre6 (based on the enterprise config from 2.4.9-13) and this seems
to be stable with connection tracking active.

Comment 3 Michael Young 2002-01-30 05:53:15 EST

Created attachment 43980 [details]
ksymoops from 2.4.9-21enterprise

Comment 4 Michael Young 2003-01-13 06:53:11 EST

This problem went away in the 2.4.18-* kernels in 7.3

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