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

Mon May 13 21:49:25 CEST 2019

Hi Daniel,

This is from a new core dump, as I didn't have the core file of the
previous core dump anymore.
Here the output of the gdb commands for 5.2 nightly:
https://pastebin.com/mN184dLK

Regards,

Grant

On Mon, May 13, 2019 at 10:33 AM Daniel-Constantin Mierla
<miconda at gmail.com> wrote:
>
> Hello,
>
> can you get from the core of 5.2 nightly
> (https://pastebin.com/XHsFAiJp), the output for following gdb commands:
>
> bt full
>
> frame 5
>
> list
>
> info locals
>
> p *spassword
>
> Cheers,
> Daniel
>
> On 13.05.19 09:57, Grant Bagdasarian wrote:
> > 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
>
> --
> Daniel-Constantin Mierla -- www.asipto.com
> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>