[Bug 246536] powerdns-recursor-4.2.1 Segmentation fault

Mon May 18 11:42:19 UTC 2020

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246536

            Bug ID: 246536
           Summary: powerdns-recursor-4.2.1 Segmentation fault
           Product: Ports & Packages
           Version: Latest
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs at FreeBSD.org
          Reporter: jose.belejo at gmail.com

Hi,

I believe I've found a critical bug on powerdns recursor 4.2.1 for i386 FreeBSD
12.1.

When I run pdns_recursor I get a Segmentation fault at the start. This is a
persistent behaviour.

I'm using the default configuration file for recursor, but that happens with a
customized conf file or even withou any configuration file.

This bug seems to be specific to i386 port.

System was fresh installed.

root at magalhaes:~ # uname -a
FreeBSD magalhaes 12.1-RELEASE-p5 FreeBSD 12.1-RELEASE-p5 GENERIC  i386
root at magalhaes:~ #
root at magalhaes:~ # freebsd-version
12.1-RELEASE-p5
root at magalhaes:~ #
root at magalhaes:~ # pkg info
boost-libs-1.72.0_1            Free portable C++ libraries (without
Boost.Python)
gettext-runtime-0.20.1         GNU gettext runtime libraries and programs
icu-66.1,1                     International Components for Unicode (from IBM)
indexinfo-0.3.1                Utility to regenerate the GNU info page index
libedit-3.1.20191211,1         Command line editor library
lua52-5.2.4                    Small, compilable scripting language providing
easy access to C code
pkg-1.13.2                     Package manager
powerdns-recursor-4.2.1        Advanced DNS recursor
protobuf-3.11.4,1              Data interchange format library
sudo-1.8.31p1                  Allow others to run commands as root
root at magalhaes:~ #
root at magalhaes:~ # pdns_recursor
May 18 12:31:09 Asked to run with pdns-distributes-queries set but no
distributor threads, raising to 1
May 18 12:31:09 PowerDNS Recursor 4.2.1 (C) 2001-2019 PowerDNS.COM BV
May 18 12:31:09 Using 32-bits mode. Built using clang 8.0.1
(tags/RELEASE_801/final 366581) on Apr 24 2020 19:00:05 by
root at 121i386-quarterly-job-07.
May 18 12:31:09 PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free
software, and you are welcome to redistribute it according to the terms of the
GPL version 2.
May 18 12:31:09 NOT using IPv6 for outgoing queries - set
'query-local-address6=::' to enable
May 18 12:31:09 Only allowing queries from: 127.0.0.0/8, 10.0.0.0/8,
100.64.0.0/10, 169.254.0.0/16, 192.168.0.0/16, 172.16.0.0/12, ::1/128,
fc00::/7, fe80::/10
May 18 12:31:09 Will not send queries to: 127.0.0.0/8, 10.0.0.0/8,
100.64.0.0/10, 169.254.0.0/16, 192.168.0.0/16, 172.16.0.0/12, ::1/128,
fc00::/7, fe80::/10, 0.0.0.0/8, 192.0.0.0/24, 192.0.2.0/24, 198.51.100.0/24,
203.0.113.0/24, 240.0.0.0/4, ::/96, ::ffff:0:0/96, 100::/64, 2001:db8::/32,
0.0.0.0, ::
May 18 12:31:09 PowerDNS Recursor itself will distribute queries over threads
May 18 12:31:09 Inserting rfc 1918 private space zones
May 18 12:31:09 Listening for UDP queries on 127.0.0.1:53
May 18 12:31:09 Listening for TCP queries on 127.0.0.1:53
May 18 12:31:09 Set effective group id to 120
May 18 12:31:09 Set effective user id to 120
May 18 12:31:09 Launching 1 distributor threads
May 18 12:31:09 Launching 2 worker threads
May 18 12:31:09 Done priming cache with root hints
May 18 12:31:09 Done priming cache with root hints
May 18 12:31:09 Done priming cache with root hints
Segmentation fault
root at magalhaes:~ #

log from messages:
May 18 12:22:01 magalhaes pdns_recursor[948]: PowerDNS Recursor 4.2.1 (C)
2001-2019 PowerDNS.COM BV
May 18 12:22:01 magalhaes pdns_recursor[948]: Using 32-bits mode. Built using
clang 8.0.1 (tags/RELEASE_801/final 366581) on Apr 24 2020 19:00:05 by
root at 121i386-quarterly-job-07.
May 18 12:22:01 magalhaes pdns_recursor[948]: PowerDNS comes with ABSOLUTELY NO
WARRANTY. This is free software, and you are welcome to redistribute it
according to the terms of the GPL version 2.
May 18 12:22:01 magalhaes pdns_recursor[948]: NOT using IPv6 for outgoing
queries - set 'query-local-address6=::' to enable
May 18 12:22:01 magalhaes pdns_recursor[948]: Only allowing queries from:
127.0.0.0/8, 10.0.0.0/8, 100.64.0.0/10, 169.254.0.0/16, 192.168.0.0/16,
172.16.0.0/12, ::1/128, fc00::/7, fe80::/10
May 18 12:22:01 magalhaes pdns_recursor[948]: Will not send queries to:
127.0.0.0/8, 10.0.0.0/8, 100.64.0.0/10, 169.254.0.0/16, 192.168.0.0/16,
172.16.0.0/12, ::1/128, fc00::/7, fe80::/10, 0.0.0.0/8, 192.0.0.0/24,
192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, 240.0.0.0/4, ::/96,
::ffff:0:0/96, 100::/64, 2001:db8::/32, 0.0.0.0, ::
May 18 12:22:01 magalhaes pdns_recursor[948]: PowerDNS Recursor itself will
distribute queries over threads
May 18 12:22:01 magalhaes pdns_recursor[948]: Inserting rfc 1918 private space
zones
May 18 12:22:01 magalhaes pdns_recursor[948]: Launching 1 distributor threads
May 18 12:22:01 magalhaes pdns_recursor[948]: Launching 2 worker threads
May 18 12:22:01 magalhaes pdns_recursor[948]: Done priming cache with root
hints
May 18 12:22:01 magalhaes kernel: pid 948 (pdns_recursor), jid 0, uid 120:
exited on signal 11

Thanks in advance for your attention.

Best regards,
Jose Belejo

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