[SR-Users] Info: initialization of libssl 1.1.+ with PTHREAD_PROCESS_SHARED attribute for pthread mutex and rwlock

Wed Sep 18 15:26:39 CEST 2019

Hi Daniel,
Which apt repository can we get this workaround?   Today I noticed our
Kamailio 5.2.4 cored during one of our load test sessions:

Wed Sep 18 09:31:14 2019] kamailio[26997]: segfault at 7f8501366000 ip
00007f8501e58585 sp 00007fffd5c84248 error 4 in
libcrypto.so.1.1[7f8501dd4000+29b000]

[Wed Sep 18 10:12:29 2019] kamailio[27110]: segfault at 7f1a8eea1000 ip
00007f1a8f993585 sp 00007ffddc8848c8 error 4 in
libcrypto.so.1.1[7f1a8f90f000+29b000]

[Wed Sep 18 10:12:43 2019] kamailio[11060]: segfault at 20 ip
00007f0a85dac128 sp 00007fff6847aad0 error 4 in
libcrypto.so.1.1[7f0a85c40000+29b000]

[Wed Sep 18 10:12:44 2019] kamailio[11059]: segfault at f0 ip
00007f0a85cc43ea sp 00007fff6847a9e8 error 4 in
libcrypto.so.1.1[7f0a85c40000+29b000]

[Wed Sep 18 10:13:02 2019] kamailio[11187]: segfault at 7f75e06c8000 ip
00007f75e11ba585 sp 00007ffe29b47c88 error 4 in
libcrypto.so.1.1[7f75e1136000+29b000]

[Wed Sep 18 10:13:17 2019] kamailio[11445]: segfault at 7f0f3743f000 ip
00007f0f37f31585 sp 00007ffde54daa38 error 4 in
libcrypto.so.1.1[7f0f37ead000+29b000]

[Wed Sep 18 10:13:36 2019] kamailio[11644]: segfault at 7f804309c000 ip
00007f8043b8e585 sp 00007ffe89fe8228 error 4 in
libcrypto.so.1.1[7f8043b0a000+29b000]

[Wed Sep 18 10:13:52 2019] kamailio[11799]: segfault at 7ff59c7e2000 ip
00007ff59d2d4585 sp 00007ffd69d76bb8 error 4 in
libcrypto.so.1.1[7ff59d250000+29b000]

[Wed Sep 18 10:13:52 2019] kamailio[11792]: segfault at 7ff59c7e2000 ip
00007ff59d2d4585 sp 00007ffd69d76bb8 error 4 in
libcrypto.so.1.1[7ff59d250000+29b000]

[Wed Sep 18 12:48:01 2019] kamailio[12066]: segfault at 7f22dca6d000 ip
00007f22dd55f585 sp 00007fffbc766ab8 error 4 in
libcrypto.so.1.1[7f22dd4db000+29b000]

[Wed Sep 18 12:48:14 2019] kamailio[16344]: segfault at 7f7cca42d000 ip
00007f7ccaf1f585 sp 00007ffe99f16108 error 4 in
libcrypto.so.1.1[7f7ccae9b000+29b000]

[Wed Sep 18 12:48:32 2019] kamailio[16708]: segfault at 7fb309141000 ip
00007fb309c33585 sp 00007ffd07a5f3c8 error 4 in
libcrypto.so.1.1[7fb309baf000+29b000]

[Wed Sep 18 12:48:49 2019] kamailio[16824]: segfault at f0 ip
00007fc59095b3ea sp 00007ffe58a490b8 error 4 in
libcrypto.so.1.1[7fc5908d7000+29b000]

[Wed Sep 18 12:49:04 2019] kamailio[16956]: segfault at 7fcc22e58000 ip
00007fcc2394a585 sp 00007fffa9c52258 error 4 in
libcrypto.so.1.1[7fcc238c6000+29b000]

[Wed Sep 18 12:49:04 2019] kamailio[16945]: segfault at f0 ip
00007fcc2394a3ea sp 00007fffa9c52128 error 4 in
libcrypto.so.1.1[7fcc238c6000+29b000]

[Wed Sep 18 12:49:16 2019] kamailio[17244]: segfault at 7f586ed20000 ip
00007f586f812585 sp 00007ffeae1adcd8 error 4 in
libcrypto.so.1.1[7f586f78e000+29b000]

[Wed Sep 18 12:49:33 2019] kamailio[17431]: segfault at 8 ip
0000562fcc44c5d5 sp 00007ffe825c9dd0 error 4 in
kamailio[562fcc17c000+4a2000]

[Wed Sep 18 12:49:33 2019] kamailio[17386]: segfault at 10 ip
00007f96c3735c3e sp 00007ffe825ca270 error 4 in
dialog.so[7f96c36d6000+be000]

[Wed Sep 18 12:49:33 2019] kamailio[17423]: segfault at 0 ip
0000562fcc3544c0 sp 00007ffe825ca1f0 error 6 in
kamailio[562fcc17c000+4a2000]

[Wed Sep 18 12:49:33 2019] kamailio[17378]: segfault at 0 ip
00007f96c5dd099f sp 00007ffe825c98e0 error 4 in tm.so[7f96c5da5000+13f000]

[Wed Sep 18 12:49:33 2019] kamailio[17417]: segfault at 0 ip
0000562fcc3544c0 sp 00007ffe825ca1f0 error 6 in
kamailio[562fcc17c000+4a2000]

[Wed Sep 18 12:49:33 2019] kamailio[17416]: segfault at 0 ip
0000562fcc3544c0 sp 00007ffe825ca1f0 error 6 in
kamailio[562fcc17c000+4a2000]

[Wed Sep 18 12:49:33 2019] kamailio[17380]: segfault at 0 ip
00007f96c5dd099f sp 00007ffe825c98e0 error 4 in tm.so[7f96c5da5000+13f000]

[Wed Sep 18 12:49:33 2019] kamailio[17381]: segfault at 0 ip
00007f96c5dd099f sp 00007ffe825c98e0 error 4 in tm.so[7f96c5da5000+13f000]

[Wed Sep 18 12:49:34 2019] kamailio[17387]: segfault at 8 ip
0000562fcc25d1f3 sp 00007ffe825ca370 error 6 in
kamailio[562fcc17c000+4a2000]

and I was wondering if this core is related.

Thanks

On Fri, Sep 13, 2019 at 5:18 PM Alex Balashov <abalashov at evaristesys.com>
wrote:

> Hi Daniel,
>
> Thanks a lot for this work; it's definitely important that Kamailio
> build against OpenSSL v1.1, and I'll be happy to contribute some testing
> in a live environment in the coming weeks. Much appreciated.
>
> Have a good weekend,
>
> -- Alex
>
> On Fri, Sep 13, 2019 at 01:34:12PM +0200, Daniel-Constantin Mierla wrote:
>
> > Hello,
> > after couple of months waiting for feedback about the workaround with the
> > preloaded shared library to set the PTHREAD_PROCESS_SHARED attribute for
> > pthread mutex/rwlock in order to avoid deadlocks and as it seems to be
> the
> > solution, I just pushed a few commits to move that code in the core of
> > kamailio.
> >
> > It this way the initialization with the PTHREAD_PROCESS_SHARED attribute
> is
> > done by default when libssl v1.1 is detected at compile time, without the
> > need of using the approach with a preloaded library.
> >
> > The shared library is still kept in the tls module:
> >   *
> >
> https://github.com/kamailio/kamailio/tree/master/src/modules/tls/utils/openssl_mutex_shared
> >
> > Probably is going to be removed in the near future.
> >
> > I am asking the community members that use Kamailio on systems with
> libssl
> > v1.1+ to test the master branch and give feedback. The master branch is
> > anyhow in testing phase for preparing the next major release v5.3.0, so
> it
> > will help for that as well.
> >
> > If no issue is going to be reported soon, the commits will be backported
> to
> > stable branches, to re-enable smooth use of Kamailio with libssl v1.1+.
> >
> > When libssl v1.1+ is detected, the core links with pthread, but that was
> > already present in the Makefiles.defs for different compile options. The
> > pthread more or less a default library on linuxes/unixes, so this should
> > not introduce any major dependency to the Kamailio core.
> >
> > Cheers,
> > Daniel
> >
> > --
> > Daniel-Constantin Mierla - http://www.asipto.com
> > http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>
> > _______________________________________________
> > Kamailio (SER) - Users Mailing List
> > sr-users at lists.kamailio.org
> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
>
> --
> Alex Balashov | Principal | Evariste Systems LLC
>
> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>

-- 
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <achen at thinkingphones.com>fuze.com

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