Bug 228998 - Kernel panic in bridged environment
Kernel panic in bridged environment
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Thomas Graf
Brian Brock
Depends On:
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Reported: 2007-02-16 08:11 EST by Pete Philips
Modified: 2014-06-18 04:29 EDT (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2008-11-03 08:02:24 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Pete Philips 2007-02-16 08:11:05 EST
Description of problem:

I am experiencing a kernel panic in very similar circumstances to a ticket on
the Netfilter bugzilla:


I have a Pentium 4 based system with four Marvell NICs using the sky2 driver.
One port is a standard interface for management of the box and two other form a
numbered bridge, br0. The third NIC is not used. One bridge interface and the
management interface are connected to a small hub.

Recently security scanning the management interface using the Qualys
vulnerability scanner a kernel panic would occur after only a few minutes of
scanning. A little investigation revealed the above bug in Netfilter.

So far I have rebuilt by own kernel and applied the fix suggested:

with additional change:

This fixes the kernel panic and the vulnerability scan proceeds to completion.

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

Redhat Enterprise 4.4. Kernel 2.6.9-42.0.8 SMP.

How reproducible:

Every time when performing a Qualys vulnerability scan.

Steps to Reproduce:
1. Run Qualys scan
2. Observe kernel panic
Actual results:
Kernel Panic

Expected results:
No Kernel Panic

Additional info:
If you need any further details such as packet traces etc, please let me know.
Comment 1 RHEL Product and Program Management 2007-05-09 03:28:06 EDT
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
Comment 2 RHEL Product and Program Management 2007-09-07 15:37:18 EDT
This request was previously evaluated by Red Hat Product Management
for inclusion in the current Red Hat Enterprise Linux release, but
Red Hat was unable to resolve it in time.  This request will be
reviewed for a future Red Hat Enterprise Linux release.
Comment 3 Thomas Graf 2008-06-13 16:41:57 EDT
Are you still experiencing the problem with a recent release?
Comment 4 Thomas Graf 2008-11-03 08:02:24 EST
I'm closing this bugzilla as there was no answer to my ping. Feel free to
reopen the bug if the problem still occurs.

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