Bug 58620 - kernel oops in ip_conntrack
Summary: kernel oops in ip_conntrack
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 7.2
Hardware: i686
OS: Linux
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2002-01-21 17:51 UTC by Michael Young
Modified: 2007-04-18 16:39 UTC (History)
1 user (show)

Clone Of:
Last Closed: 2003-01-13 11:53:11 UTC

Attachments (Terms of Use)
Output from ksymoops (9.69 KB, text/plain)
2002-01-21 17:53 UTC, Michael Young
no flags Details
ksymoops from 2.4.9-21enterprise (7.24 KB, text/plain)
2002-01-30 10:53 UTC, Michael Young
no flags Details

Description Michael Young 2002-01-21 17:51:46 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: 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:

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

Additional info:

Comment 1 Michael Young 2002-01-21 17:53:13 UTC
Created attachment 43034 [details]
Output from ksymoops

Comment 2 Michael Young 2002-01-30 10:50:52 UTC
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 10:53:15 UTC
Created attachment 43980 [details]
ksymoops from 2.4.9-21enterprise

Comment 4 Michael Young 2003-01-13 11:53:11 UTC
This problem went away in the 2.4.18-* kernels in 7.3

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