[SR-Users] Fwd: Stack smash error when using auth_ephemeral with KEMI

[Grant Bagdasarian]

Hi Daniel,

No, both result in the stack smash error.
I've tried with the following deb packages. They all lead to the same issue.
- 5.2.1 stable
- 5.2.2 stable
- 5.2. nightly
- devel nightly

Core dump for 5.2.1: https://pastebin.com/tTUUk4YH
Core dump for 5.2.2 nightly: https://pastebin.com/XHsFAiJp

I'm running Kamailio inside a Docker container (using the official
Docker image: kamailio/kamailio from Docker Hub).

Hope this is clear.

Regards,

Grant

On Mon, May 13, 2019 at 9:45 AM Daniel-Constantin Mierla
<miconda at gmail.com> wrote:
>
> Hi Grant,
>
> for clarification -- using the dedicated KEMI function is working fine? Only when using x.modf() is crashing?
>
> Cheers,
> Daniel
>
> On 12.05.19 10:23, Grant Bagdasarian wrote:
>
> Hi Daniel,
>
> Yes, I’ve only been using the dedicated KEMI functions. This was just a simple try to see what would happen.
> Anyways, thanks for the tip!
>
> Regards,
> Grant
>
> On Sun, 12 May 2019 at 09:42, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
>>
>> Hello,
>>
>> have you tried the dedicated KEMI functions?
>>
>>   -
>> http://kamailio.org/docs/tutorials/devel/kamailio-kemi-framework/modules/#auth_ephemeral
>>
>> KSR.x.modf() must be avoided as much as possible, because it is an
>> workaround which can also lead to memory leaks if the kamailio.cfg
>> functions don't have a free fixup function.
>>
>> Cheers,
>> Daniel
>>
>> On 12.05.19 00:16, Grant Bagdasarian wrote:
>> > Hi Daniel,
>> >
>> > FYI, the following also ends up in the stack smash error:
>> > _.x.modf("autheph_authenticate", "1576734089:grant", "1234")
>> >
>> > I also tried with the devel nightly deb package, which also resulted
>> > in the same error.
>> > I'm unsure if this error also happens when using the native Kamailio
>> > script, as my routing logic is built using the Python3 module.
>> > Will give the native script a try soon, and report back.
>> >
>> > Regards,
>> >
>> > Grant
>> >
>> > On Tue, May 7, 2019 at 11:08 PM Grant Bagdasarian
>> > <grantbagdasarian at gmail.com> wrote:
>> >> Hi Daniel,
>> >>
>> >> I used the latest Docker image for Kamailio 5.2.2 and then changed the
>> >> apt kamailio.list file to contain the nightly build and
>> >> updated/upgraded kamailio. Hope this is enough to target the latest
>> >> git 5.2 version.
>> >> If not, please let me know.
>> >>
>> >> deb     http://deb.kamailio.org/kamailio52-nightly stretch main
>> >> deb-src http://deb.kamailio.org/kamailio52-nightly stretch main
>> >>
>> >> https://pastebin.com/XHsFAiJp
>> >>
>> >> It still ends in a stacksmash error.
>> >>
>> >> Regards,
>> >>
>> >> Grant
>> >>
>> >> On Fri, May 3, 2019 at 11:56 AM Daniel-Constantin Mierla
>> >> <miconda at gmail.com> wrote:
>> >>> Hello,
>> >>>
>> >>> can you try with latest git branch 5.2? I pushed a commit that
>> >>> eventually fixes it.
>> >>>
>> >>> Cheers,
>> >>> Daniel
>> >>>
>> >>> On 02.05.19 23:54, Grant Bagdasarian wrote:
>> >>>> Hi Daniel,
>> >>>>
>> >>>> See pastebin url below for the backtrace.
>> >>>> https://pastebin.com/tTUUk4YH
>> >>>>
>> >>>> Hopefully I did it the right way. Please let me know if you need anything else.
>> >>>> FYI, Kamailio is running inside of a docker container.
>> >>>>
>> >>>> version: kamailio 5.2.1 (x86_64/linux)
>> >>>> flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS,
>> >>>> USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM,
>> >>>> SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY,
>> >>>> USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER,
>> >>>> USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
>> >>>> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE
>> >>>> 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
>> >>>> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
>> >>>> id: unknown
>> >>>> compiled with gcc 6.3.0
>> >>>>
>> >>>> I can easily replicate this, but to be sure I've saved the core file
>> >>>> locally on my machine.
>> >>>>
>> >>>> Regards,
>> >>>>
>> >>>> Grant
>> >>>>
>> >>>> On Thu, May 2, 2019 at 10:05 AM Daniel-Constantin Mierla
>> >>>> <miconda at gmail.com> wrote:
>> >>>>> Hello,
>> >>>>>
>> >>>>> can you get a core file for this case?
>> >>>>>
>> >>>>> Set `ulimit -c unlimited` before starting Kamailio as root and run again.
>> >>>>>
>> >>>>> Once you have the core file, get the backtrace with gdb.
>> >>>>>
>> >>>>> Cheers,
>> >>>>> Daniel
>> >>>>>
>> >>>>> On 01.05.19 20:26, Grant Bagdasarian wrote:
>> >>>>>> Hello,
>> >>>>>>
>> >>>>>> I was trying out the auth_ephemeral module inside the xhttp
>> >>>>>> event_route in Python KEMI, and discovered a possible bug.
>> >>>>>>
>> >>>>>> https://pastebin.com/4Ghumfis
>> >>>>>>
>> >>>>>> The following will result in the stack smash error. Whenever I leave
>> >>>>>> out the unixtimestamp the
>> >>>>>> module will complain about not being able to convert to an int, which
>> >>>>>> make sense, but doesn't lead to a stack smash error and a complete
>> >>>>>> crash of Kamailio.
>> >>>>>>
>> >>>>>> KSR.auth_ephemeral.autheph_authenticate("1576734089:grant", "1234").
>> >>>>>>
>> >>>>>> According to the documentation this module can only be used in
>> >>>>>> REQUEST_ROUTE, but I found a presentation online which also used this
>> >>>>>> module and that particular function in event_route, which is what I
>> >>>>>> need for WebSocket authentication.
>> >>>>>>
>> >>>>>> Hope this helps. Please let me know if you need more information.
>> >>>>>>
>> >>>>>> Regards,
>> >>>>>>
>> >>>>>> Grant
>> >>>>>>
>> >>>>>> _______________________________________________
>> >>>>>> Kamailio (SER) - Users Mailing List
>> >>>>>> sr-users at lists.kamailio.org
>> >>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>> >>>>> --
>> >>>>> Daniel-Constantin Mierla -- www.asipto.com
>> >>>>> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>> >>>>> Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
>> >>>>>
>> >>>> _______________________________________________
>> >>>> Kamailio (SER) - Users Mailing List
>> >>>> sr-users at lists.kamailio.org
>> >>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>> >>> --
>> >>> Daniel-Constantin Mierla -- www.asipto.com
>> >>> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>> >>> Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
>> >>>
>> --
>> Daniel-Constantin Mierla -- www.asipto.com
>> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>>
> --
> Daniel-Constantin Mierla -- www.asipto.com
> www.twitter.com/miconda -- www.linkedin.com/in/miconda