Bug 515145

Summary:	System hangs when generating SSH2 DSA key
Product:	[Fedora] Fedora	Reporter:	Joachim Frieben <jfrieben>
Component:	openssh	Assignee:	Jan F. Chadima <jchadima>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	rawhide	CC:	ahopkins, jchadima, mgrepl, mvadkert, tmraz
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	531738 (view as bug list)		Environment:
Last Closed:	2009-10-29 11:45:46 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:	531738

Description Joachim Frieben 2009-08-02 17:49:10 UTC

Description of problem:
After installing a system from the current "rawhide" tree, the boot procedure always hangs at launching sshd when the latter tries to create the SSH2 DSA key. The last message reads:

  "Generating SSH2 DSA host key:"

The system will be stuck at this point unless the user enters ctrl-c which will cause this step to be aborted ("[FAILED]"). Hereafter, the system boots up as expected.

Version-Release number of selected component (if applicable):
openssh-server-5.2p1-17.fc12.i686

How reproducible:
Always.

Steps to Reproduce:
1. Restart system.
  
Actual results:
System hangs at step "Generating SSH2 DSA host key:".

Expected results:
SSH2 DSA host key gets created for once and for all.

Additional info:
- SELinux mode is "permissive".
- F11 used to behave correctly in this respect.
- http://www.smolts.org/client/show/pub_4cc8ec74-04a2-4b0c-88c3-6dce6d7b1d31
- Relevant segment from /etc/rc.d/init.d/sshd reads:

  if [ ! -s $DSA_KEY ]; then
	echo -n $"Generating SSH2 DSA host key: "
	if $KEYGEN -q -t dsa -f $DSA_KEY -C '' -N '' >&/dev/null; then
		chmod 600 $DSA_KEY
		chmod 644 $DSA_KEY.pub
		if [ -x /sbin/restorecon ]; then
		    /sbin/restorecon $DSA_KEY.pub
		fi
		success $"DSA key generation"
		echo
	else
		failure $"DSA key generation"
		echo
		exit 1
	fi
  fi

Comment 1 Jan F. Chadima 2009-09-30 11:44:02 UTC

I cannot reproduce it, is there any other condition (memory, cpu,... ) which cause it?

Comment 5 Joachim Frieben 2009-10-29 11:45:46 UTC

Sorry for not having reported yet that after a recent "rawhide" install from scratch on said IBM ThinkPad T23, the issue did not occur anymore.

Comment 6 Jan F. Chadima 2009-10-29 14:34:21 UTC

Repaired in F12 and F13 as well.