Red Hat Bugzilla – Bug 473504
kernel panic in tcp_tso_segment() (iptables/netfilter)
Last modified: 2009-09-02 04:24:14 EDT
Created attachment 325047 [details]
Console screen output containing kernel panic error
Description of problem:
Kernel panic, probably caused by iptables.
Version-Release number of selected component (if applicable):
uname -a says: 2.6.18-92.1.18.el5 #1 SMP Wed Nov 5 09:00:13 EST 2008 i686 i686 i386 GNU/Linux
n/a. It has happened twice in a week.
Steps to Reproduce:
See attached picture of console screen.
This is the same problem as this reported by Mike Accetta:
This upstream commit solves this issue:
I'm going to prepare testing kernels for you.
As I wrote, I have prepared testing kernels. Could you please try them and give here any report? Kernels are available at:
Kernel has been loaded:
# uname -a
Linux xxxx.uoregon.edu 2.6.18-125.el5.ivtest.2 #1 SMP Tue Dec 9 09:00:31 EST 2008 i686 i686 i386 GNU/Linux
I'll let you know how it goes. Thank you.
Carlos, could you please inform me if the testing kernel is solving the issue?
It seems to have solved the issue. The machine has not crashed since the test kernel was loaded. Thanks.
Hi Carlos, I had to reimplement the fix for this issue. But the patch is completely different. Can I ask you for another round of testing?
The kernels are at:
It's now loaded:
# uname -a
Linux xxxx.uoregon.edu 2.6.18-128.el5.ivtest.4 #1 SMP Wed Jan 21 11:50:25 EST 2009 i686 i686 i386 GNU/Linux
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
Updating PM score.
You can download this test kernel from http://people.redhat.com/dzickus/el5
Please do NOT transition this bugzilla state to VERIFIED until our QE team
has sent specific instructions indicating when to do so. However feel free
to provide a comment indicating that this fix has been verified.
Can you give us feedback on your latest testing? In particular, could you try kernel-2.6.18-132 or later and verify it no longer panics?
Somehow I missed the 02/23 post. Sorry.
I've been running 2.6.18-128.el5.ivtest.4 for months without any problems.
I could not find kernel-2.6.18-132 in the link you provided. There are versions starting with 133. Should I try the latest (138)?
In addition, all I see are the kernel-headers RPMs. Do I not need the rest of the kernel packages? I guess I could compile the source, but I'd rather not.
No problem. If you could try the latest (-138) that would be great. It should have all the correct RPMs in the i686 directory. For example:
Just curious if you were able to load one of the test kernels from http://people.redhat.com/dzickus/el5 ? And if so, what were the results?
I've been running 2.6.18-138.el5 #1 SMP for 21 days now with no problems.
Thank you very much.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.