Bug 454703

Summary: netdump uses hard-coded remote port for server
Product: Red Hat Enterprise Linux 4 Reporter: Bryn M. Reeves <bmr>
Component: netdumpAssignee: Neil Horman <nhorman>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 4.6CC: kvolny, linuxdev-kernel-it, tao
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2009-05-18 20:03:03 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 391511    
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Description Flags
use the client's local port when replying none

Description Bryn M. Reeves 2008-07-09 20:06:20 UTC 
Description of problem:
The netdump server uses a hard coded remote port when replying to netdump clients:

netdumpclient.c:
netdump_client_send_reboot ()
[...]
  addr.sin_port = htons(NETDUMP_PORT);
  addr.sin_addr.s_addr = htonl(reboot->ip);

netdump_client_send_request ()
[...]
  addr.sin_port = htons(NETDUMP_PORT);
  addr.sin_addr.s_addr = htonl(client->ip);

This prevents the server communicating with clients that have defined a
non-default LOCALPORT in /etc/sysconfig/netdump.

Version-Release number of selected component (if applicable):
0.7.16-14.EL

How reproducible:
100%

Steps to Reproduce:
1. Configure a netdump client with LOCALPORT!=6666
2. Force a crash on the client

Actual results:
Netdump server replies to port 6666, netdump handshake fails

Expected results:
Netdump server replies to the client's LOCALPORT

Additional info:
Comment 1 Bryn M. Reeves 2008-07-09 20:18:52 UTC 
Created attachment 311416 [details]
use the client's local port when replying
Comment 3 Neil Horman 2008-07-11 19:45:17 UTC 
fixed in -21.el5, thanks!
Comment 6 Bryn M. Reeves 2008-07-14 14:52:45 UTC 
Cloned for el5 EPEL as bug 455265
Comment 9 RHEL Program Management 2008-09-05 17:09:18 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 16 errata-xmlrpc 2009-05-18 20:03:03 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 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.

http://rhn.redhat.com/errata/RHBA-2009-0486.html