Bug 436425

Summary:	bind crash on 'reconfig' at resolver.c:7384
Product:	[Fedora] Fedora	Reporter:	Bill McGonigle <bill-bugzilla.redhat.com>
Component:	bind	Assignee:	Adam Tkac <atkac>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	low
Version:	8	CC:	ovasik
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-11-27 10:32:54 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:

Description Bill McGonigle 2008-03-07 04:12:25 UTC

Running bind-9.5.0-23.b1.fc8 - my hourly reconfig cronjob seems to have tripped
up bind on me.  Only once so far.  I set perms on /var/named so I'll get a core
if it happens again.  Logfile says:

Mar  4 06:15:01 borlaug named[1650]: received control channel command 'reconfig'
Mar  4 06:15:01 borlaug named[1650]: loading configuration from '/etc/named.conf'
Mar  4 06:15:01 borlaug named[1650]: reloading configuration succeeded
Mar  4 06:15:01 borlaug named[1650]: any newly configured zones are now loaded
Mar  4 06:15:01 borlaug named[1650]: resolver.c:7384: fatal error:
Mar  4 06:15:01 borlaug named[1650]:
RUNTIME_CHECK(((pthread_mutex_lock(((&res->lock))) == 0) ? 0 : 34) == 0) failed
Mar  4 06:15:01 borlaug named[1650]: exiting (due to fatal error in library)

The server has ECC memory and didn't throw a check. 

I'm reporting this here as ISC seems to not want bug reports about b1 now that
they're on b2.

Comment 1 Adam Tkac 2008-03-10 11:18:42 UTC

b2 is in testing repository now (see
https://bugzilla.redhat.com/show_bug.cgi?id=400461#c27). Would it be possible
try it, please? From changelog it seems that some fix might be related to this
issue.

Comment 2 Bill McGonigle 2008-03-12 02:29:39 UTC

Thanks.  I've installed b2 and will report here (n theory, with a core) if I see
another crash, though I don't know how to reproduce it.

Comment 3 Fedora Update System 2008-04-29 20:59:38 UTC

bind-9.5.0-26.b3.fc8 has been pushed to the Fedora 8 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update bind'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F8/FEDORA-2008-3402

Comment 4 Bill McGonigle 2008-05-09 04:46:16 UTC

Another segfault today using the version from testing, but without the debugging
info this time:

May  5 14:45:01 borlaug kernel: named[1837]: segfault at dededede eip 00170c23
esp b7f26010 error 5

I also boned the aforementioned permissions, so didn't get a core (doh!).  I
think I've fixed them now:
  #ls -ld /var/named
  drwxrwxr-x 7 root named 4096 Mar 11 22:26 /var/named/
but would appreciate notice to the contrary.

I do a reconfig every */15, so the timestamps line up to suggest this is the
same problem.

Comment 5 Adam Tkac 2008-05-09 11:20:35 UTC

Yes, /var/named has to be writable by named user when you want core file.
Segfault written above is different problem than original one. Attach core file
when next segfault occurs, please. Thanks

Comment 6 Bug Zapper 2008-11-26 10:03:09 UTC

This message is a reminder that Fedora 8 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 8.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '8'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 8's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 8 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
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please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
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The process we are following is described here: 
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Comment 7 Bill McGonigle 2008-11-26 20:40:25 UTC

AFAICT, this update:

Jul 10 05:34:43 Updated: bind-libs - 32:9.5.0-28.P1.fc8.i386
Jul 10 05:34:56 Updated: bind - 32:9.5.0-28.P1.fc8.i386
Jul 10 05:35:23 Updated: bind-utils - 32:9.5.0-28.P1.fc8.i386
Jul 10 05:35:29 Updated: bind-chroot - 32:9.5.0-28.P1.fc8.i386

solved the issue.  At least it hasn't recurred since then.  Note, I believe the updates are changing /var/named to 750,root:named which stops potentially useful cores from being written (needs to be 770).  Not sure if that's another bug or design.

Comment 8 Adam Tkac 2008-11-27 10:32:54 UTC

(In reply to comment #7)
> AFAICT, this update:
> 
> Jul 10 05:34:43 Updated: bind-libs - 32:9.5.0-28.P1.fc8.i386
> Jul 10 05:34:56 Updated: bind - 32:9.5.0-28.P1.fc8.i386
> Jul 10 05:35:23 Updated: bind-utils - 32:9.5.0-28.P1.fc8.i386
> Jul 10 05:35:29 Updated: bind-chroot - 32:9.5.0-28.P1.fc8.i386
> 
> solved the issue.  At least it hasn't recurred since then.  Note, I believe the

Thanks for feedback, closing this bug

> updates are changing /var/named to 750,root:named which stops potentially
> useful cores from being written (needs to be 770).  Not sure if that's another
> bug or design.

It is intentional to have /var/named non-writable by named user.