Bug 214544

Summary: netpoll_send_udp does not compute a UDP checksum
Product: Red Hat Enterprise Linux 4 Reporter: Chris Lalancette <clalance>
Component: kernelAssignee: Chris Lalancette <clalance>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.4CC: jbaron
Target Milestone: ---   
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Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHBA-2007-0304 Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2007-05-08 04:04:14 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Fix to correctly compute checksum in netpoll_send_udp none

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
netpoll_send_udp.
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 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
release.
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.

http://rhn.redhat.com/errata/RHBA-2007-0304.html