[gentoo-user] problem with named restarting

[gentoo-user] problem with named restarting

[John Covici]

Hi.  I am having a very annoying problem with named.  I am using
net-dns/bind-9.14.4 which I actually updated from a previous version
which also had the problem. It seems that an assertion has failed:
Sep 17 03:10:53 ccs.covici.com named[1857864]: resolver.c:4917:
INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back
trace

There is a back trace which I can supply if that would help.  There is
also a coredump.

Also, when I restart named (which I have now done automatically by
systemd) it gives me a lot of errors like the following:
Sep 17 03:11:59 ccs.covici.com named[3299910]: validating arpa/DS: no
valid signature found
or this:
Sep 17 03:12:00 ccs.covici.com named[3299910]: validating com/DS: no
valid signature found

I am just caching only, this box is not the actual resolver for my
domain.

Any ideas on this would be appreciated.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com

[gentoo-user] Re: problem with named restarting

[Ian Zimmerman]

On 2019-09-17 03:30, John Covici wrote:

> Hi.  I am having a very annoying problem with named.  I am using
> net-dns/bind-9.14.4 which I actually updated from a previous version
> which also had the problem. It seems that an assertion has failed:
> Sep 17 03:10:53 ccs.covici.com named[1857864]: resolver.c:4917:
> INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back
> trace
> 
> There is a back trace which I can supply if that would help.  There is
> also a coredump.
> 
> Also, when I restart named (which I have now done automatically by
> systemd) it gives me a lot of errors like the following:
> Sep 17 03:11:59 ccs.covici.com named[3299910]: validating arpa/DS: no
> valid signature found
> or this:
> Sep 17 03:12:00 ccs.covici.com named[3299910]: validating com/DS: no
> valid signature found

This looks like a DNSSEC problem.  I don't run bind on my gentoo system,
but I did this:

$ equery -C u net-dns/bind
[ Legend : U - final flag setting for installation]
[        : I - package is installed with flag     ]
[ Colors : set, unset                             ]
 * Found these USE flags for net-dns/bind-9.14.4:
 U I
 + + berkdb                   : Add support for sys-libs/db (Berkeley DB for MySQL)
 + - caps                     : Use Linux capabilities library to control privilege
 - - dlz                      : Enables dynamic loaded zones, 3rd party extension
 - - dnsrps                   : Enable the DNS Response Policy Service (DNSRPS) API, a mechanism to allow an
                                external response policy provider
 - - dnstap                   : Enables dnstap packet logging
 - - doc                      : Add extra documentation (API, Javadoc, etc). It is recommended to enable per
                                package instead of globally
 - - fixed-rrset              : Enables fixed rrset-order option
 - - geoip                    : Add geoip support for country and city lookup based on IPs
 - - gost                     : Enables gost OpenSSL engine support
 - - gssapi                   : Enable gssapi support
 + + json                     : Enable JSON statistics channel
 - - ldap                     : Add LDAP support (Lightweight Directory Access Protocol)
 - - libressl                 : Use dev-libs/libressl instead of dev-libs/openssl when applicable (see also the ssl
                                useflag)
 - - lmdb                     : Enable LMDB support to store configuration for 'addzone' zones
 - - mysql                    : Add mySQL Database support
 - - odbc                     : Add ODBC Support (Open DataBase Connectivity)
 - - postgres                 : Add support for the postgresql database
 - - python                   : Add optional support/bindings for the Python language
 + + python_targets_python2_7 : Build with Python 2.7
 - - python_targets_python3_5 : Build with Python 3.5
 + + python_targets_python3_6 : Build with Python 3.6
 - - static-libs              : Build static versions of dynamic libraries as well
 - - urandom                  : Use /dev/urandom instead of /dev/random
 + + xml                      : Add support for XML files
 + + zlib                     : Add support for zlib (de)compression

which left me puzzled: the libressl flag docstring talks about a ssl
flag which doesn't exist for this package.

Try running "ldd /usr/sbin/named".  Is openssl (ie. libssl and
libcrypto) part of the output?

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Re: [gentoo-user] Re: problem with named restarting

[John Covici]

On Tue, 17 Sep 2019 12:14:14 -0400,
Ian Zimmerman wrote:
> 
> On 2019-09-17 03:30, John Covici wrote:
> 
> > Hi.  I am having a very annoying problem with named.  I am using
> > net-dns/bind-9.14.4 which I actually updated from a previous version
> > which also had the problem. It seems that an assertion has failed:
> > Sep 17 03:10:53 ccs.covici.com named[1857864]: resolver.c:4917:
> > INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back
> > trace
> > 
> > There is a back trace which I can supply if that would help.  There is
> > also a coredump.
> > 
> > Also, when I restart named (which I have now done automatically by
> > systemd) it gives me a lot of errors like the following:
> > Sep 17 03:11:59 ccs.covici.com named[3299910]: validating arpa/DS: no
> > valid signature found
> > or this:
> > Sep 17 03:12:00 ccs.covici.com named[3299910]: validating com/DS: no
> > valid signature found
> 
> This looks like a DNSSEC problem.  I don't run bind on my gentoo system,
> but I did this:
> 
> $ equery -C u net-dns/bind
> [ Legend : U - final flag setting for installation]
> [        : I - package is installed with flag     ]
> [ Colors : set, unset                             ]
>  * Found these USE flags for net-dns/bind-9.14.4:
>  U I
>  + + berkdb                   : Add support for sys-libs/db (Berkeley DB for MySQL)
>  + - caps                     : Use Linux capabilities library to control privilege
>  - - dlz                      : Enables dynamic loaded zones, 3rd party extension
>  - - dnsrps                   : Enable the DNS Response Policy Service (DNSRPS) API, a mechanism to allow an
>                                 external response policy provider
>  - - dnstap                   : Enables dnstap packet logging
>  - - doc                      : Add extra documentation (API, Javadoc, etc). It is recommended to enable per
>                                 package instead of globally
>  - - fixed-rrset              : Enables fixed rrset-order option
>  - - geoip                    : Add geoip support for country and city lookup based on IPs
>  - - gost                     : Enables gost OpenSSL engine support
>  - - gssapi                   : Enable gssapi support
>  + + json                     : Enable JSON statistics channel
>  - - ldap                     : Add LDAP support (Lightweight Directory Access Protocol)
>  - - libressl                 : Use dev-libs/libressl instead of dev-libs/openssl when applicable (see also the ssl
>                                 useflag)
>  - - lmdb                     : Enable LMDB support to store configuration for 'addzone' zones
>  - - mysql                    : Add mySQL Database support
>  - - odbc                     : Add ODBC Support (Open DataBase Connectivity)
>  - - postgres                 : Add support for the postgresql database
>  - - python                   : Add optional support/bindings for the Python language
>  + + python_targets_python2_7 : Build with Python 2.7
>  - - python_targets_python3_5 : Build with Python 3.5
>  + + python_targets_python3_6 : Build with Python 3.6
>  - - static-libs              : Build static versions of dynamic libraries as well
>  - - urandom                  : Use /dev/urandom instead of /dev/random
>  + + xml                      : Add support for XML files
>  + + zlib                     : Add support for zlib (de)compression
> 
> which left me puzzled: the libressl flag docstring talks about a ssl
> flag which doesn't exist for this package.
> 
> Try running "ldd /usr/sbin/named".  Is openssl (ie. libssl and
> libcrypto) part of the output?
libcrypto is there along with libgnutls, but no libssl.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com

[gentoo-user] Re: problem with named restarting

[Ian Zimmerman]

On 2019-09-17 13:01, John Covici wrote:

> > > Also, when I restart named (which I have now done automatically by
> > > systemd) it gives me a lot of errors like the following:
> > > Sep 17 03:11:59 ccs.covici.com named[3299910]: validating arpa/DS: no
> > > valid signature found
> > > or this:
> > > Sep 17 03:12:00 ccs.covici.com named[3299910]: validating com/DS: no
> > > valid signature found
> > 
> > This looks like a DNSSEC problem.  I don't run bind on my gentoo system,
> > but I did this:

> > [snipped]

> > Try running "ldd /usr/sbin/named".  Is openssl (ie. libssl and
> > libcrypto) part of the output?

> libcrypto is there along with libgnutls, but no libssl.

Ok, so it probably is built with DNSSEC support.

How do you populate your cache?  Do you recurse to the root servers, or
do you have a "forwarder" (for example, your ISP server) to which you
pass all queries that miss the cache?

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Re: [gentoo-user] Re: problem with named restarting

[John Covici]

On Tue, 17 Sep 2019 18:33:51 -0400,
Ian Zimmerman wrote:
> 
> On 2019-09-17 13:01, John Covici wrote:
> 
> > > > Also, when I restart named (which I have now done automatically by
> > > > systemd) it gives me a lot of errors like the following:
> > > > Sep 17 03:11:59 ccs.covici.com named[3299910]: validating arpa/DS: no
> > > > valid signature found
> > > > or this:
> > > > Sep 17 03:12:00 ccs.covici.com named[3299910]: validating com/DS: no
> > > > valid signature found
> > > 
> > > This looks like a DNSSEC problem.  I don't run bind on my gentoo system,
> > > but I did this:
> 
> > > [snipped]
> 
> > > Try running "ldd /usr/sbin/named".  Is openssl (ie. libssl and
> > > libcrypto) part of the output?
> 
> > libcrypto is there along with libgnutls, but no libssl.
> 
> Ok, so it probably is built with DNSSEC support.
> 
> How do you populate your cache?  Do you recurse to the root servers, or
> do you have a "forwarder" (for example, your ISP server) to which you
> pass all queries that miss the cache?

I have more than one, but they are forwarders. 

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com

Re: [gentoo-user] Re: problem with named restarting

[Adam Carter]

[-- Attachment #1: Type: text/plain, Size: 629 bytes --]

>
> > which left me puzzled: the libressl flag docstring talks about a ssl
> > flag which doesn't exist for this package.
> >
> > Try running "ldd /usr/sbin/named".  Is openssl (ie. libssl and
> > libcrypto) part of the output?
> libcrypto is there along with libgnutls, but no libssl.
>
>
FWIW, on 9.14.5 with
USE="berkdb caps dlz xml zlib -dnsrps -dnstap -doc -fixed-rrset -geoip
-geoip2 -gssapi -json -ldap -libressl -lmdb -mysql -odbc -postgres -python
(-selinux) -static-libs -urandom" ABI_X86="(64)" PYTHON_TARGETS="python2_7
python3_6 -python3_5 -python3_7"

ldd shows there's no libgnutls, just libcrypto (from openssl).

[-- Attachment #2: Type: text/html, Size: 1024 bytes --]

[gentoo-user] Re: problem with named restarting

[Ian Zimmerman]

On 2019-09-17 20:40, John Covici wrote:

> On Tue, 17 Sep 2019 18:33:51 -0400,
> Ian Zimmerman wrote:
> > 
> > On 2019-09-17 13:01, John Covici wrote:
> > 
> > > > > Also, when I restart named (which I have now done automatically by
> > > > > systemd) it gives me a lot of errors like the following:
> > > > > Sep 17 03:11:59 ccs.covici.com named[3299910]: validating arpa/DS: no
> > > > > valid signature found
> > > > > or this:
> > > > > Sep 17 03:12:00 ccs.covici.com named[3299910]: validating com/DS: no
> > > > > valid signature found
> > > > 
> > > > This looks like a DNSSEC problem.  I don't run bind on my gentoo system,
> > > > but I did this:
> > 
> > > > [snipped]
> > 
> > > > Try running "ldd /usr/sbin/named".  Is openssl (ie. libssl and
> > > > libcrypto) part of the output?
> > 
> > > libcrypto is there along with libgnutls, but no libssl.
> > 
> > Ok, so it probably is built with DNSSEC support.
> > 
> > How do you populate your cache?  Do you recurse to the root servers, or
> > do you have a "forwarder" (for example, your ISP server) to which you
> > pass all queries that miss the cache?
> 
> I have more than one, but they are forwarders. 

Then it's likely a problem with one of them.  For DNSSEC to work, all
the servers that handle the query must support it.

One way to get rid of the warning is to just disable DNSSEC at runtime.
In /etc/bind/named.conf (or a file included by it):

options { dnssec-enable no; };

Reference:
https://downloads.isc.org/isc/bind9/9.14.0/doc/arm/Bv9ARM.ch05.html#options_grammar

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Re: [gentoo-user] Re: problem with named restarting

[John Covici]

On Wed, 18 Sep 2019 11:47:37 -0400,
Ian Zimmerman wrote:
> 
> On 2019-09-17 20:40, John Covici wrote:
> 
> > On Tue, 17 Sep 2019 18:33:51 -0400,
> > Ian Zimmerman wrote:
> > > 
> > > On 2019-09-17 13:01, John Covici wrote:
> > > 
> > > > > > Also, when I restart named (which I have now done automatically by
> > > > > > systemd) it gives me a lot of errors like the following:
> > > > > > Sep 17 03:11:59 ccs.covici.com named[3299910]: validating arpa/DS: no
> > > > > > valid signature found
> > > > > > or this:
> > > > > > Sep 17 03:12:00 ccs.covici.com named[3299910]: validating com/DS: no
> > > > > > valid signature found
> > > > > 
> > > > > This looks like a DNSSEC problem.  I don't run bind on my gentoo system,
> > > > > but I did this:
> > > 
> > > > > [snipped]
> > > 
> > > > > Try running "ldd /usr/sbin/named".  Is openssl (ie. libssl and
> > > > > libcrypto) part of the output?
> > > 
> > > > libcrypto is there along with libgnutls, but no libssl.
> > > 
> > > Ok, so it probably is built with DNSSEC support.
> > > 
> > > How do you populate your cache?  Do you recurse to the root servers, or
> > > do you have a "forwarder" (for example, your ISP server) to which you
> > > pass all queries that miss the cache?
> > 
> > I have more than one, but they are forwarders. 
> 
> Then it's likely a problem with one of them.  For DNSSEC to work, all
> the servers that handle the query must support it.
> 
> One way to get rid of the warning is to just disable DNSSEC at runtime.
> In /etc/bind/named.conf (or a file included by it):
> 
> options { dnssec-enable no; };
> 
> Reference:
> https://downloads.isc.org/isc/bind9/9.14.0/doc/arm/Bv9ARM.ch05.html#options_grammar
> 

Thanks, I will try that, do you know why named is restarting, this is a much
worse problem?

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com

[gentoo-user] Re: problem with named restarting

[Ian Zimmerman]

On 2019-09-18 12:00, John Covici wrote:

> Thanks, I will try that, do you know why named is restarting, this is
> a much worse problem?

As of now I don't know.  I may be able to guess if you post the backtrace.

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Re: [gentoo-user] Re: problem with named restarting

[John Covici]

On Thu, 19 Sep 2019 12:43:39 -0400,
Ian Zimmerman wrote:
> 
> On 2019-09-18 12:00, John Covici wrote:
> 
> > Thanks, I will try that, do you know why named is restarting, this is
> > a much worse problem?
> 
> As of now I don't know.  I may be able to guess if you post the backtrace.

OK, here is what I have.
Sep 18 22:25:45 ccs.covici.com named[4207]: resolver.c:4917: INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back trace
Sep 18 22:25:45 ccs.covici.com named[4207]: #0 0x5645afbc0610 in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #1 0x7f64def5037a in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #2 0x7f64df10168b in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #3 0x7f64df1030cc in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #4 0x7f64df108025 in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #5 0x7f64df109a44 in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #6 0x7f64def6e329 in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #7 0x7f64de8aa448 in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: #8 0x7f64de5ff62f in ??
Sep 18 22:25:45 ccs.covici.com named[4207]: exiting (due to assertion failure)

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com

[gentoo-user] Re: problem with named restarting

[Ian Zimmerman]

On 2019-09-19 14:23, John Covici wrote:

> Sep 18 22:25:45 ccs.covici.com named[4207]: resolver.c:4917: INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back trace
> Sep 18 22:25:45 ccs.covici.com named[4207]: #0 0x5645afbc0610 in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #1 0x7f64def5037a in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #2 0x7f64df10168b in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #3 0x7f64df1030cc in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #4 0x7f64df108025 in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #5 0x7f64df109a44 in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #6 0x7f64def6e329 in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #7 0x7f64de8aa448 in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: #8 0x7f64de5ff62f in ??
> Sep 18 22:25:45 ccs.covici.com named[4207]: exiting (due to assertion failure)
> 

It looks like a bug.  Can you build with -g and without stripping?

Sorry it took so long to get back to you.

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Re: [gentoo-user] Re: problem with named restarting

[John Covici]

On Sat, 16 Nov 2019 16:12:53 -0500,
Ian Zimmerman wrote:
> 
> On 2019-09-19 14:23, John Covici wrote:
> 
> > Sep 18 22:25:45 ccs.covici.com named[4207]: resolver.c:4917: INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back trace
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #0 0x5645afbc0610 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #1 0x7f64def5037a in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #2 0x7f64df10168b in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #3 0x7f64df1030cc in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #4 0x7f64df108025 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #5 0x7f64df109a44 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #6 0x7f64def6e329 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #7 0x7f64de8aa448 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #8 0x7f64de5ff62f in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: exiting (due to assertion failure)
> > 
> 
> It looks like a bug.  Can you build with -g and without stripping?

Hmmm,  I have split-debug on and I thought I had -g in my flags, but I
will check.  Does it go in CFLAGS .etc?


-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com

[gentoo-user] Re: problem with named restarting

[Ian Zimmerman]

On 2019-11-17 06:00, John Covici wrote:

> On Sat, 16 Nov 2019 16:12:53 -0500,
> Ian Zimmerman wrote:
> > 
> > It looks like a bug.  Can you build with -g and without stripping?
> 
> Hmmm,  I have split-debug on and I thought I had -g in my flags, but I
> will check.  Does it go in CFLAGS .etc?

-g has to be on in both CFLAGS and LDFLAGS, I think.  Stripping is
disabled with FEATURES=" ... nostrip ..." in make.conf, I hope it also
works as an environment variable but I am not positive.

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Re: [gentoo-user] Re: problem with named restarting

[John Covici]

On Sat, 16 Nov 2019 16:12:53 -0500,
Ian Zimmerman wrote:
> 
> On 2019-09-19 14:23, John Covici wrote:
> 
> > Sep 18 22:25:45 ccs.covici.com named[4207]: resolver.c:4917: INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back trace
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #0 0x5645afbc0610 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #1 0x7f64def5037a in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #2 0x7f64df10168b in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #3 0x7f64df1030cc in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #4 0x7f64df108025 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #5 0x7f64df109a44 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #6 0x7f64def6e329 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #7 0x7f64de8aa448 in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: #8 0x7f64de5ff62f in ??
> > Sep 18 22:25:45 ccs.covici.com named[4207]: exiting (due to assertion failure)
> > 
> 
> It looks like a bug.  Can you build with -g and without stripping?
> 
> Sorry it took so long to get back to you.

So, I made sure glibc had -gdb and recompiled and recompiled named,
but still no symbols.  It was an assertion that failed, maybe this is
the reason.  I can send you the core dump if you would be interested.

Thanks.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com

[gentoo-user] Re: problem with named restarting

[Ian Zimmerman]

On 2019-11-19 03:32, John Covici wrote:

> 
> So, I made sure glibc had -gdb and recompiled and recompiled named,
> but still no symbols.  It was an assertion that failed, maybe this is
> the reason.  I can send you the core dump if you would be interested.

First I'll look into the backtraces are generated.  AFAIK a core dump
only helps when one has the binary.

I'll be back!

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