[Freeipa-users] Kerberos process coredump | authentication fails

[Prashant Bapat]

Thanks Sumit.

>From the logs there is nothing unusual around the time of core dump. I
found this one line odd though.

*Jan 26 03:15:58 ipa.example.net <http://ipa.example.net>
krb5kdc[4471](Error): worker 4473 exited with status 134*


Let me try to get the full BT.

On 28 January 2016 at 13:54, Sumit Bose <sbose at redhat.com> wrote:

> On Thu, Jan 28, 2016 at 10:25:53AM +0530, Prashant Bapat wrote:
> > Hi,
> >
> > We have a FreeIPA 4.1.4 setup on F21 servers. There is 1 master and 7
> > replicas in different regions. Earlier there was only 1 replica. Since I
> > added new replicas, on the master node, once in a while the kerberos
> > process dumps core and everything stops working - authentication,
> > replication etc. If we restart everything using "ipactl restart" things
> are
> > back to normal.
> >
> > Attached is the output from journalctl for kerberos.
> >
> > Has anyone come across this ? Are there any pointers to troubleshooting
> > this ?
>
> This might be fixed recently by a patch from Simo
> (2144b1eeb789639b8a3df287b580aeb6196188a8). But to help to better
> identify the issue the content of the kdc logs around the time of the
> crash might be useful. Additionally a full backtrace which you can get
> by calling
>
>   coredumpclt gdb 4475
>
> and then
>
>   bt full
>
> bye,
> Sumit
>
> >
> > Any help is appreciated.
> >
> > Thanks.
> > --Prashant
>
> > Jan 26 03:15:59 ipa.example.net systemd-coredump[5000]: Process 4475
> (krb5kdc) of user 0 dumped core.
> >
> >                                                        Stack trace of
> thread 4475:
> >                                                        #0
> 0x00007f99de8c18d7 raise (libc.so.6)
> >                                                        #1
> 0x00007f99de8c353a abort (libc.so.6)
> >                                                        #2
> 0x00007f99de8ba47d __assert_fail_base (libc.so.6)
> >                                                        #3
> 0x00007f99de8ba532 __assert_fail (libc.so.6)
> >                                                        #4
> 0x00007f99d783a78f ldap_get_values_len (libldap_r-2.4.so.2)
> >                                                        #5
> 0x00007f99d7c8173e ipadb_ldap_attr_to_int (ipadb.so)
> >                                                        #6
> 0x00007f99d7c83f9c ipadb_parse_ldap_entry (ipadb.so)
> >                                                        #7
> 0x00007f99d7c849ab ipadb_get_principal (ipadb.so)
> >                                                        #8
> 0x00007f99e0433b14 krb5_db_get_principal (libkdb5.so.7)
> >                                                        #9
> 0x000055768457c230 process_tgs_req (krb5kdc)
> >                                                        #10
> 0x0000557684579fe3 dispatch (krb5kdc)
> >                                                        #11
> 0x000055768458d8a0 process_packet (krb5kdc)
> >                                                        #12
> 0x00007f99dec4cc78 verto_fire (libverto.so.1)
> >                                                        #13
> 0x00007f99d6fb72a3 epoll_event_loop_once (libtevent.so.0)
> >                                                        #14
> 0x00007f99d6fb5787 std_event_loop_once (libtevent.so.0)
> >                                                        #15
> 0x00007f99d6fb1fed _tevent_loop_once (libtevent.so.0)
> >                                                        #16
> 0x00007f99dec4c3f7 verto_run (libverto.so.1)
> >                                                        #17
> 0x00005576845795ab main (krb5kdc)
> >                                                        #18
> 0x00007f99de8acfe0 __libc_start_main (libc.so.6)
> >                                                        #19
> 0x00005576845798f0 _start (krb5kdc)
> >
> > Jan 26 03:15:59 ipa.example.net systemd-coredump[4999]: Process 4473
> (krb5kdc) of user 0 dumped core.
> >
> >                                                        Stack trace of
> thread 4473:
> >                                                        #0
> 0x00007f99de8c18d7 raise (libc.so.6)
> >                                                        #1
> 0x00007f99de8c353a abort (libc.so.6)
> >                                                        #2
> 0x00007f99de8ba47d __assert_fail_base (libc.so.6)
> >                                                        #3
> 0x00007f99de8ba532 __assert_fail (libc.so.6)
> >                                                        #4
> 0x00007f99d783a78f ldap_get_values_len (libldap_r-2.4.so.2)
> >                                                        #5
> 0x00007f99d7c8173e ipadb_ldap_attr_to_int (ipadb.so)
> >                                                        #6
> 0x00007f99d7c83f9c ipadb_parse_ldap_entry (ipadb.so)
> >                                                        #7
> 0x00007f99d7c849ab ipadb_get_principal (ipadb.so)
> >                                                        #8
> 0x00007f99e0433b14 krb5_db_get_principal (libkdb5.so.7)
> >                                                        #9
> 0x000055768457c230 process_tgs_req (krb5kdc)
> >                                                        #10
> 0x0000557684579fe3 dispatch (krb5kdc)
> >                                                        #11
> 0x000055768458d8a0 process_packet (krb5kdc)
> >                                                        #12
> 0x00007f99dec4cc78 verto_fire (libverto.so.1)
> >                                                        #13
> 0x00007f99d6fb72a3 epoll_event_loop_once (libtevent.so.0)
> >                                                        #14
> 0x00007f99d6fb5787 std_event_loop_once (libtevent.so.0)
> >                                                        #15
> 0x00007f99d6fb1fed _tevent_loop_once (libtevent.so.0)
> >                                                        #16
> 0x00007f99dec4c3f7 verto_run (libverto.so.1)
> >                                                        #17
> 0x00005576845795ab main (krb5kdc)
> >                                                        #18
> 0x00007f99de8acfe0 __libc_start_main (libc.so.6)
> >                                                        #19
> 0x00005576845798f0 _start (krb5kdc)
>
> > --
> > Manage your subscription for the Freeipa-users mailing list:
> > https://www.redhat.com/mailman/listinfo/freeipa-users
> > Go to http://freeipa.org for more info on the project
>
> --
> Manage your subscription for the Freeipa-users mailing list:
> https://www.redhat.com/mailman/listinfo/freeipa-users
> Go to http://freeipa.org for more info on the project
>
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