Bug 214544 - netpoll_send_udp does not compute a UDP checksum
Summary: netpoll_send_udp does not compute a UDP checksum
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel   
(Show other bugs)
Version: 4.4
Hardware: All Linux
Target Milestone: ---
: ---
Assignee: Chris Lalancette
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2006-11-08 03:37 UTC by Chris Lalancette
Modified: 2007-11-17 01:14 UTC (History)
1 user (show)

Fixed In Version: RHBA-2007-0304
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2007-05-08 04:04:14 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Fix to correctly compute checksum in netpoll_send_udp (566 bytes, patch)
2006-11-08 03:37 UTC, Chris Lalancette
no flags Details | Diff

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2007:0304 normal SHIPPED_LIVE Updated kernel packages available for Red Hat Enterprise Linux 4 Update 5 2007-04-28 18:58:50 UTC

Description Chris Lalancette 2006-11-08 03:37:05 UTC
+++ This bug was initially created as a clone of Bug #214542 +++

Description of problem:

netpoll_send_udp would always set the UDP checksum to 0.  This means that all
packets sent via netconsole or netdump(the only two users of netpoll_send_udp)
would have a zero checksum.  While this is technically allowed by the protocol,
this is generally not advisable.  The fix is a simple UDP checksum calculation in

Comment 1 Chris Lalancette 2006-11-08 03:37:08 UTC
Created attachment 140623 [details]
Fix to correctly compute checksum in netpoll_send_udp

Comment 2 Jason Baron 2006-11-10 22:04:41 UTC
committed in stream U5 build 42.24. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/

Comment 3 RHEL Product and Program Management 2006-11-28 03:34:06 UTC
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 4 Jay Turner 2006-12-18 14:51:56 UTC
QE ack for RHEL4.5.

Comment 7 Red Hat Bugzilla 2007-05-08 04:04:14 UTC
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 the 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.


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