[SR-Users] Need help analyze crash
Daniel-Constantin Mierla
miconda at gmail.com
Thu Jun 3 14:58:53 CEST 2021
Hello,
it is not related to kamailio tls being compiled with libssl1.1. The
issues were observed on the systems having both libssl1.0 (which was
somehow the default choice) and libssl1.1. I got the chance to test a
bit and it was still crashing even I compiled manually with libssl1.1. I
didn't dig much in the external libraries given that upgrading OS seemed
to fix it. There is a mod param for db_mysql that you can try to play
with: opt_ssl_mode - I don't recall solving much for mysql servers
requiring tls.
Otherwise, on a different direction: if you can get mariadb client
library, you can try to compile kamailio against it (the db_mysql
module) -- if the MySQL server is on a remote system, it should work.
I can't confirm it is same issue, but if you upgraded in kamailio 5.4.x
series, there were no changes to carrierroute or db_mysql to
As a side note, for newer operating systems and newer libssl, it may
also require to set --atexit cli parameter for kamailio.
Cheers,
Daniel
On 03.06.21 14:42, Andrew Chen wrote:
> Hi Daniel,
>
> I just confirmed mysql is compiled using libssl.so.1.1.
>
> As for the other kamailio packages, I only see two that are installed
> where both are depends on libssl1.1
>
> kamailio-tls-modules:amd64
>
> *Depends*: kamailio (= 5.4.5), libc6 (>= 2.14), libcurl4 (>= 7.16.2),
> libssl1.1 (>= 1.1.0)
>
>
>
> kamailio-websocket-modules:amd64
>
> *Depends*: kamailio (= 5.4.5), libc6 (>= 2.14), libssl1.1 (>= 1.1.0),
> libunistring2 (>= 0.9.7)
>
>
> So in my case here there shouldn't be any conflict with mysql client
> libssl version?
>
> Thanks.
>
>
> On Thu, Jun 3, 2021 at 3:10 AM Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
> Hello,
>
> I think the relevant here are the client library. I asked about
> mysql vs mariadb because some distro had (meta-)packages named
> mysql but installing mariadb. Debian at some point switched to
> something like default-mysql-client...
>
> Based on backtrace, the crashes would prevent kamailio to start,
> as carrierroute_db_open() is used in mod_init/child_init callbacks.
>
> A variant you could try is the use of mysql-proxy to bridge from a
> local unix socket to remote mysql, so kamailio connects to mysql
> server via local unix socket and by that won't use libssl.
>
> First you can check with ldd if mysql client libraries are
> compiled against libssl1.1 and the libssl1.0 is also used for
> other packages.
>
> Cheers,
> Daniel
>
> On 02.06.21 21:56, Andrew Chen wrote:
>> Hi Daniel,
>> So our DB is in rds and this is what I can gather:
>>
>> +-------------------------+------------------------------+
>>
>> | Variable_name | Value |
>>
>> +-------------------------+------------------------------+
>>
>> | innodb_version | 5.6.34 |
>>
>> | protocol_version | 10 |
>>
>> | slave_type_conversions | |
>>
>> | version | 5.6.34-log |
>>
>> | version_comment | MySQL Community Server (GPL) |
>>
>> | version_compile_machine | x86_64 |
>>
>> | version_compile_os | Linux |
>>
>> +-------------------------+------------------------------+
>>
>>
>> The mysql server/client library we received from my apt-cache
>> madison output earlier.
>>
>>
>> I don't know if upgrading to 20.04 is an option.
>>
>>
>> Given this said, what are the symptoms of these crashes? I'm
>> guessing one of them is a brief disconnect from the DB for
>> dialplan/dispatcher/carrierroute lookup?
>>
>>
>> Thanks.
>>
>>
>> On Wed, Jun 2, 2021 at 3:38 PM Daniel-Constantin Mierla
>> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>>
>> Hello,
>>
>> did you upgrade the Kamailio only or also mysql server/client
>> library? Is it Oracle's MySQL or MariaDB?
>>
>> A while ago, there were a few reports of problems with
>> mysql-client (Oracle) library on Ubuntu 16.04 and 18.04,
>> which typically happened after upgrades of the library, as I
>> understood, the upgrade brought in a dependency on libssl
>> 1.1, while libssl1.0 was used by most of the other packages,
>> resulting in mixed deployments. Upgrading to 20.04 seemed to
>> solve it, as it came with libssl1.1 only.
>>
>> Cheers,
>> Daniel
>>
>> On 02.06.21 20:51, Andrew Chen wrote:
>>> Hi all,
>>>
>>> Today I upgraded Kamailio to 5.4.5 and a random crash was
>>> just reported in our crash monitoring script. Below is the
>>> output of the crash:
>>>
>>> #3 0x00007fa149ebe58d in ?? () from
>>> /usr/lib/x86_64-linux-gnu/kamailio/modules/tls.so
>>>
>>> #4 0x00007fa14989e277 in ERR_clear_error () from
>>> /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1
>>>
>>> #5 0x00007fa149933d81 in X509_STORE_set_default_paths ()
>>> from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1
>>>
>>> #6 0x00007fa10310d374 in ?? () from
>>> /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20
>>>
>>> #7 0x00007fa10310d9f3 in ?? () from
>>> /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20
>>>
>>> #8 0x00007fa1030e0427 in mysql_real_connect () from
>>> /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20
>>>
>>> #9 0x00007fa10368428c in db_mysql_new_connection () from
>>> /usr/lib/x86_64-linux-gnu/kamailio/modules/db_mysql.so
>>>
>>> #10 0x00007fa1501f96dc in db_do_init2 () from
>>> /usr/lib/x86_64-linux-gnu/kamailio/libsrdb1.so.1
>>>
>>> #11 0x00007fa1501f83f9 in db_do_init () from
>>> /usr/lib/x86_64-linux-gnu/kamailio/libsrdb1.so.1
>>>
>>> #12 0x00007fa103689710 in db_mysql_init () from
>>> /usr/lib/x86_64-linux-gnu/kamailio/modules/db_mysql.so
>>>
>>> #13 0x00007fa15062d35f in carrierroute_db_open () from
>>> /usr/lib/x86_64-linux-gnu/kamailio/modules/carrierroute.so
>>>
>>> #14 0x00007fa1506719c6 in ?? () from
>>> /usr/lib/x86_64-linux-gnu/kamailio/modules/carrierroute.so
>>>
>>>
>>> Is this crash due to libcrypto or mysql client?
>>> Currently I have the following mysql client installed on the
>>> kamailio instance:
>>>
>>> ii lib*mysql*client20:amd64
>>> 5.7.34-0ubuntu0.18.04.1 amd64 MySQL
>>> database client library
>>>
>>> ii *mysql*-client
>>> 5.7.34-0ubuntu0.18.04.1 all MySQL
>>> database client (metapackage depending on the latest version)
>>>
>>> ii *mysql*-client-5.7
>>> 5.7.34-0ubuntu0.18.04.1 amd64 MySQL
>>> database client binaries
>>>
>>> ii *mysql*-client-core-5.7
>>> 5.7.34-0ubuntu0.18.04.1 amd64 MySQL
>>> database core client binaries
>>>
>>> ii *mysql*-common 5.8+1.0.4
>>> all MySQL database common files,
>>> e.g. /etc/*mysql*/my.cnf
>>>
>>> root at ashintgtpsg51:/var/lib/cores # apt-cache madison
>>> mysql-client
>>>
>>> mysql-client | 5.7.34-0ubuntu0.18.04.1 |
>>> http://us-east-1.ec2.archive.ubuntu.com/ubuntu
>>> <http://us-east-1.ec2.archive.ubuntu.com/ubuntu>
>>> bionic-updates/main amd64 Packages
>>>
>>> mysql-client | 5.7.34-0ubuntu0.18.04.1 |
>>> http://security.ubuntu.com/ubuntu
>>> <http://security.ubuntu.com/ubuntu> bionic-security/main
>>> amd64 Packages
>>>
>>> mysql-client | 5.7.21-1ubuntu1 |
>>> http://us-east-1.ec2.archive.ubuntu.com/ubuntu
>>> <http://us-east-1.ec2.archive.ubuntu.com/ubuntu> bionic/main
>>> amd64 Packages
>>>
>>> root at ashintgtpsg51:/var/lib/cores #
>>>
>>>
>>> Any suggestions would be greatly appreciated.
>>> Thanks in advance.
>>>
>>> --
>>> Andy Chen
>>> Sr. Telephony Lead Engineer
>>> achen@ <mailto:achen at thinkingphones.com>fuze.com
>>> <http://fuze.com>
>>>
>>>
>>>
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>>
>> --
>> Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
>> www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>> Kamailio Advanced Training - Online - June 7-10, 2021 (America Timezone)
>> * https://www.asipto.com/sw/kamailio-advanced-training-online/ <https://www.asipto.com/sw/kamailio-advanced-training-online/>
>>
>>
>>
>> --
>> Andy Chen
>> Sr. Telephony Lead Engineer
>> 415 516 5535 (M)
>> achen@ <mailto:achen at thinkingphones.com>fuze.com <http://fuze.com>
>>
>>
>> *Confidentiality Notice: The information contained in this e-mail
>> and any
>> attachments may be confidential. If you are not an intended
>> recipient, you
>> are hereby notified that any dissemination, distribution or
>> copying of this
>> e-mail is strictly prohibited. If you have received this e-mail
>> in error,
>> please notify the sender and permanently delete the e-mail and any
>> attachments immediately. You should not retain, copy or use this
>> e-mail or
>> any attachment for any purpose, nor disclose all or any part of the
>> contents to any other person. Thank you.*
>
> --
> Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
> www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
> Kamailio Advanced Training - Online - June 7-10, 2021 (America Timezone)
> * https://www.asipto.com/sw/kamailio-advanced-training-online/ <https://www.asipto.com/sw/kamailio-advanced-training-online/>
>
>
>
> --
> Andy Chen
> Sr. Telephony Lead Engineer
> 415 516 5535 (M)
> achen@ <mailto:achen at thinkingphones.com>fuze.com <http://fuze.com>
>
>
> *Confidentiality Notice: The information contained in this e-mail and any
> attachments may be confidential. If you are not an intended recipient, you
> are hereby notified that any dissemination, distribution or copying of
> this
> e-mail is strictly prohibited. If you have received this e-mail in error,
> please notify the sender and permanently delete the e-mail and any
> attachments immediately. You should not retain, copy or use this e-mail or
> any attachment for any purpose, nor disclose all or any part of the
> contents to any other person. Thank you.*
--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Online - June 7-10, 2021 (America Timezone)
* https://www.asipto.com/sw/kamailio-advanced-training-online/
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