SMS

Romeu Medeiros medeiros at medeiros.eng.br
Wed Jul 17 21:18:14 UTC 2019


Harald,

Sorry, I forgot to attach the pcap file.

Thanks



On Wed, Jul 17, 2019 at 6:17 PM Romeu Medeiros <medeiros at medeiros.eng.br>
wrote:

> Harald,
>
> 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.
>
> 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)
>
> 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?
>
>
> In the attach have the PCAP of the SGS between the OSMO and NextEPC-MME.
>
> Thanks
>
> Romeu Medeiros
>
> On Wed, Jul 17, 2019 at 6:40 AM Harald Welte <laforge at gnumonks.org> wrote:
>
>> Hi Romeu,
>>
>> On Tue, Jul 16, 2019 at 07:45:02PM -0300, Romeu Medeiros wrote:
>>
>> > I think that in some situations the msc is losing the sgs registrations
>> and
>> > can't forward the sms. But I will more tests before to disturb you
>> there.
>>
>> feel free to share some pcap files, we're also happy to review them from
>> the osmocom
>> point of view.
>>
>> --
>> - 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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