Potential issue in Bind 9.7.3-P3

Hayward, Bruce Bruce.Hayward at mtsallstream.com
Thu Oct 27 15:43:09 UTC 2011

I compiled both 9.7.4, and 9.8.0-P4 yesterday (w/IPV6 and 64)(using the BIND Vulnerability Matrix at http://www.isc.org/software/bind/security/matrix <http://www.isc.org/software/bind/security/matrix>  - picking on clean ones)


I installed 9.7.4 yesterday on the prblem server, so far for the past month+ we have failed once a week.  I'll advise after a couple of three weeks.


Thanks Bruce

From: Ian_Veach at nshe.nevada.edu [mailto:Ian_Veach at nshe.nevada.edu] 
Sent: Thursday, October 27, 2011 10:18 AM
To: Hayward, Bruce
Cc: bind-users at lists.isc.org
Subject: Re: Potential issue in Bind 9.7.3-P3



Yes, we've had 9.7.3-P3 stop responding completely.  We're transitioning from SLES to RHEL, and this happens on the RHEL system only (but SLES version is older than 9.7.3-P3).  Bind runs fine for days under "simulated" load, but runs randomly for minutes to many hours before freezing under real client/internet requests.  When it does freeze, it really freezes.  Not only no more requests, but rndc is no longer able to contact it to get stats, dump the db, anything.  When I strace in to named, it seems to be doing NOTHING (no sys calls at all).  So far, a trace 90 [running before freeze] hasn't turned up anything obvious that I can see (or understand) - and the trace 90 also stops when bind stops responding.  Sound familiar?


I've had some other things come up and have avoided this issue for awhile, but am back on trying to figure this out.  Yesterday, I compiled 9.8.1 per Mark Andrew's request.  I'm going to hopefully test that today and report more fully here and to bugs if need be, but may not report until next week, depending.

cheers and thanks,
Ian 'Ivo' Veach, ian_veach at nshe.nevada.edu NSHE System Computing Services
http://www.nevada.edu/~ivo Senior UNIX Adminisgeek
"we know you have choices, thank you for choosing scs for your computing needs"

-----bind-users-bounces+ian_veach=nshe.nevada.edu at lists.isc.org wrote: ----- 

To: <bind-users at lists.isc.org>
From: "Hayward, Bruce" 
Sent by: bind-users-bounces+ian_veach=nshe.nevada.edu at lists.isc.org
Date: 10/27/2011 05:40AM
Subject: Potential issue in Bind 9.7.3-P3

Has anyone had an issue in the past month with bind 9.7.3-P3, where bind stops responding.  


In this case we are running on a Netra 240, under Solaris 10.


I do not have a lot to offer yet, as there is nothing in any of the logs.


I am currently running a snoop for the next time.


Thanks Bruce

There are 340,282,366,920,938,463,463,374,607,431,768,211,456 IPV6 IPs divided by 6,775,235,700 people on the earth in 2009 = 5.02244323 × 10 to the 28th IPV6 IPs per person... That should be enough for approximately (about 50 octillion That is 50 followed by 27 zeros)  50,000,000,000,000,000,000,000,000,000 IPV6 devices per person.

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