SMS

Romeu Medeiros medeiros at medeiros.eng.br
Thu Jul 18 01:07:55 UTC 2019


Hello Harald,

I sent the backtrace full in the bugtracker.

Thanks

Romeu Medeiros

On Wed, Jul 17, 2019 at 8:30 PM Harald Welte <laforge at gnumonks.org> wrote:

> Hi Romeu,
>
> On Wed, Jul 17, 2019 at 06:17:31PM -0300, Romeu Medeiros wrote:
> > I some situations, when the MME lost connection with the OSMO-MSC and
> > return this connection if I try send a MT-CSFB the OSMO-MSC is crashing.
>
> that obviously shouldn't happen.
>
> > I get this error in the log:
> >
> > <0006> sgs_iface.c:470 XXXXXXXXXX state == 1  conf_by_radio_contact_ind
> == 1
> > <0011> sgs_iface.c:251 (sub
> > IMSI-724210000000003:MSISDN-5544912340003:TMSI-0x8E44F269) Tx
> > PAGING-REQUEST suitable MME found, but no SGS connection present!
> > <0005> sgs_iface.c:480
> > SGs-UE(imsi:724210000000003)[0x563949b08fc0]{SGs-ASSOCIATED}: Will not
> Page
> > (no MME)
> > <0005> paging.c:101 Paging:
> > IMSI-724210000000003:MSISDN-5544912340003:TMSI-0x8E44F269 for MNCC:
> > establish call: Starting paging failed (rc=-22)
> > <0001> gsm_04_08_cc.c:1922 trans(CC
> > IMSI-724210000000003:MSISDN-5544912340003:TMSI-0x8E44F269 callref-0x1396
> > tid-255) Failed to allocate paging token.
> > Segmentation fault (core dumped)
>
> Thanks. I created a bug at https://osmocom.org/issues/4117
>
> > I'll try why this happened, but I'm not getting used to it in the OSMO
> > source code. Can you tell me (if you have time) how identify where this
> > crash is occouring?
>
> It's the same as any other C program:
> * compile with "-g"
> * run it in gdb
> * provoke the setfault
> * take a "backtrace full" after the crash
>
> It would be great if you could amend the bugtracker with that information,
> but I would guess the information you provided is already sufficient for
> Philipp,
> the implementor of the SGs support in OsmoMSC.
>
> --
> - Harald Welte <laforge at gnumonks.org>
> http://laforge.gnumonks.org/
>
> ============================================================================
> "Privacy in residential applications is a desirable marketing option."
>                                                   (ETSI EN 300 175-7 Ch.
> A6)
>
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