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Harald Welte laforge at gnumonks.orgHi 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)