NetBSD Problem Report #46911

From martin@duskware.de  Thu Sep  6 08:43:57 2012
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Date: Thu,  6 Sep 2012 08:43:57 +0000 (UTC)
From: martin@NetBSD.org
Reply-To: martin@NetBSD.org
To: gnats-bugs@gnats.NetBSD.org
Subject: cprng rekeys too much
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>Number:         46911
>Category:       kern
>Synopsis:       cprng rekeys too much
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    tls
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Sep 06 08:45:00 +0000 2012
>Closed-Date:    Mon Sep 10 02:32:03 +0000 2012
>Last-Modified:  Mon Sep 10 02:32:03 +0000 2012
>Originator:     Martin Husemann
>Release:        NetBSD 6.99.11
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD thirdstage.duskware.de 6.99.11 NetBSD 6.99.11 (MODULAR) #3: Thu Sep 6 10:12:43 CEST 2012 martin@night-porter.duskware.de:/usr/src/sys/arch/sparc64/compile/MODULAR sparc64
Architecture: sparc64
Machine: sparc64
>Description:

There are a lot of warnings when logging via ssh into a -current machine
(like 50 lines of):

	cprng sysctl: WARNING pseudorandom rekeying.

>How-To-Repeat:
Boot a -current machine, ssh in.

>Fix:
n/a

>Release-Note:

>Audit-Trail:

Responsible-Changed-From-To: kern-bug-people->tls
Responsible-Changed-By: martin@NetBSD.org
Responsible-Changed-When: Thu, 06 Sep 2012 08:47:23 +0000
Responsible-Changed-Why:
over to resident expert


State-Changed-From-To: open->feedback
State-Changed-By: dholland@NetBSD.org
State-Changed-When: Sun, 09 Sep 2012 17:16:08 +0000
State-Changed-Why:
a fix was committed (and the notice didn't make it to gnats) - does it work
now?


From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc: tls@NetBSD.org, netbsd-bugs@netbsd.org, gnats-admin@netbsd.org,
	dholland@NetBSD.org, martin@NetBSD.org
Subject: Re: kern/46911 (cprng rekeys too much)
Date: Sun, 9 Sep 2012 19:20:23 +0200

 I get a single warning log per ssh login now.

 Martin

State-Changed-From-To: feedback->open
State-Changed-By: dholland@NetBSD.org
State-Changed-When: Sun, 09 Sep 2012 17:32:08 +0000
State-Changed-Why:
well, I guess that's a start.

(I was seeing this too the other day when I updated one of my machines, but
I had to just revert the changes that caused it, as it's expensive to update)


State-Changed-From-To: open->closed
State-Changed-By: tls@NetBSD.org
State-Changed-When: Mon, 10 Sep 2012 02:32:03 +0000
State-Changed-Why:
Fixed.  Any cprng keyed early (before there was even enough entropy
available for the pool code to consider itself started-up) now gets
rekeyed just once on the next request after startup entropy is available.


>Unformatted:

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