Bug 480414

Summary: [NetApp 5.4 bug] rsh (rlogin) goes into infinite loop on failure
Product: Red Hat Enterprise Linux 5 Reporter: Dan Muntz <dmuntz>
Component: rshAssignee: Adam Tkac <atkac>
Status: CLOSED INSUFFICIENT_DATA QA Contact: BaseOS QE <qe-baseos-auto>
Severity: high Docs Contact:
Priority: high    
Version: 5.2CC: andriusb, marting, ovasik, rvokal, rwheeler, xdl-redhat-bugzilla
Target Milestone: betaKeywords: OtherQA
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-02-25 13:27:59 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: 461680, 483784    

Description Dan Muntz 2009-01-16 22:11:28 UTC 
Description of problem:
If you try this command: "rsh <machine> -l root" on a 64-bit install of RHEL 5.2, and the connection fails, the command goes into an infinite loop.  Previously (and for some reason, in the 32-bit install), the Kerberized rlogin will fall back to the "normal" /usr/bin/rlogin when krb4 connection fails, and then /usr/bin/rlogin either succeeds, or fails and exits.  On 64-bit installs, /usr/bin/rlogin seems to be retrying (kerberized?) rlogin on failure, thus going into an infinite loop.
 
# rsh acehigh -l root
connect to address 172.17.84.153 port 543: Connection refused
Trying krb4 rlogin...
connect to address 172.17.84.153 port 543: Connection refused
trying normal rlogin (/usr/bin/rlogin)
connect to address 172.17.84.153 port 543: Connection refused
Trying krb4 rlogin...
connect to address 172.17.84.153 port 543: Connection refused
trying normal rlogin (/usr/bin/rlogin)
connect to address 172.17.84.153 port 543: Connection refused
Trying krb4 rlogin...
.......


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


How reproducible:
always


Steps to Reproduce:
1. see description
2.
3.
  
Actual results:
# rsh acehigh -l root
connect to address 172.17.84.153 port 543: Connection refused
Trying krb4 rlogin...
connect to address 172.17.84.153 port 543: Connection refused
trying normal rlogin (/usr/bin/rlogin)
connect to address 172.17.84.153 port 543: Connection refused
Trying krb4 rlogin...
connect to address 172.17.84.153 port 543: Connection refused
trying normal rlogin (/usr/bin/rlogin)
connect to address 172.17.84.153 port 543: Connection refused
Trying krb4 rlogin...
.......


Expected results:
# rsh acehigh -l root
connect to address 172.17.84.153 port 543: Connection refused
Trying krb4 rlogin...
connect to address 172.17.84.153 port 543: Connection refused
trying normal rlogin (/usr/bin/rlogin)
Password:

Additional info:
Comment 1 Andrius Benokraitis 2009-01-16 22:15:46 UTC 
Have you tried RHEL 5.3 Beta to see if this has been fixed?
Comment 2 Adam Tkac 2009-01-19 15:21:29 UTC 
Hm, it's weird. Could you attach strace output, please? ("strace rsh <machinename> -l root > log 2>&1" and then attach log file)
Comment 3 Adam Tkac 2009-02-23 11:26:08 UTC 
(In reply to comment #2)
> Hm, it's weird. Could you attach strace output, please? ("strace rsh
> <machinename> -l root > log 2>&1" and then attach log file)

Could you attach requested strace output, please? Otherwise this issue won't be fixed in RHEL 5.4
Comment 4 RHEL Program Management 2009-02-25 13:27:59 UTC 
Development Management has reviewed and declined this request.  You may appeal
this decision by reopening this request.
Comment 5 Andrius Benokraitis 2009-02-25 15:30:24 UTC 
Closing due to reporter inactivity.