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

I understood it happened on a load test session, which typically is not done in production, but some test/staging system.

Cheers, Daniel

On 18.09.19 16:01, Andrew Chen wrote:

I'll look for the core.

As part of our release process, I don't think we can release master branch of Kamailio.

On Wed, Sep 18, 2019 at 9:54 AM Daniel-Constantin Mierla <miconda@gmail.com mailto:miconda@gmail.com> wrote:

Hello,

did you get core files? If yes, it would be good to see the gdb
bracktraces.

Have you used the pre-loaded library workaround?

The code was not backported to branch 5.2 yet, I wanted to wait a
bit and see if there are reports with good/bad results. If you
want to use it, then you have to install nightly builds from
master branch (development version, should be 5.3.0-pre1 at this
moment).

Cheers,
Daniel

On 18.09.19 15:26, Andrew Chen wrote:

...

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@evaristesys.com <mailto:abalashov@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

    > _______________________________________________
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    <mailto:sr-users@lists.kamailio.org>
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    -- 
    Alex Balashov | Principal | Evariste Systems LLC

    Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
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-- 
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <mailto:achen@thinkingphones.com>fuze.com <http://fuze.com>


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-- Andy Chen Sr. Telephony Lead Engineer 415 516 5535 (M) achen@ mailto:achen@thinkingphones.comfuze.com http://fuze.com

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