Cellular Network Infrastructure » Radio Access Network » OsmoBSC

When osmo-bsc is started while the stp is unreachable and a phone tries to make an LU, than osmo-bsc crashes:

Fri Aug  3 14:20:51 2018 DMSC <0007> fsm.c:189 A-RESET(msc-0)[0x55ca2cae15e0]{DISC}: Timeout of T4
Fri Aug  3 14:20:51 2018 DMSC <0007> a_reset.c:106 A-RESET(msc-0)[0x55ca2cae15e0]{DISC}: (re)sending BSSMAP RESET message...
Fri Aug  3 14:20:51 2018 DMSC <0007> osmo_bsc_sigtran.c:92 Sending RESET to MSC: RI=SSN_PC,PC=0.23.1,SSN=BSSAP
Fri Aug  3 14:20:51 2018 DLSS7 <001f> m3ua.c:507 XUA_AS(as-clnt-msc-0)[0x55ca2cae06d0]{AS_DOWN}: Event AS-TRANSFER.req not permitted
Fri Aug  3 14:20:51 2018 DMSC <0007> a_reset.c:110 A-RESET(msc-0)[0x55ca2cae15e0]{DISC}: state_chg to DISC
Fri Aug  3 14:20:52 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=0): meas_rep_count++=37 meas_rep_last_seen_nr=36
Fri Aug  3 14:20:52 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=1): meas_rep_count++=35 meas_rep_last_seen_nr=34
BTS 0 reported connected PCU version 0.5.0
Fri Aug  3 14:20:52 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=0): meas_rep_count++=38 meas_rep_last_seen_nr=37
Fri Aug  3 14:20:52 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=1): meas_rep_count++=36 meas_rep_last_seen_nr=35
Fri Aug  3 14:20:53 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=0): meas_rep_count++=39 meas_rep_last_seen_nr=38
Fri Aug  3 14:20:53 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=1): meas_rep_count++=37 meas_rep_last_seen_nr=36
Fri Aug  3 14:20:53 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=0): meas_rep_count++=40 meas_rep_last_seen_nr=39
Fri Aug  3 14:20:53 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=1): meas_rep_count++=38 meas_rep_last_seen_nr=37
Fri Aug  3 14:20:53 2018 DMSC <0007> fsm.c:189 A-RESET(msc-0)[0x55ca2cae15e0]{DISC}: Timeout of T4
Fri Aug  3 14:20:53 2018 DMSC <0007> a_reset.c:106 A-RESET(msc-0)[0x55ca2cae15e0]{DISC}: (re)sending BSSMAP RESET message...
Fri Aug  3 14:20:53 2018 DMSC <0007> osmo_bsc_sigtran.c:92 Sending RESET to MSC: RI=SSN_PC,PC=0.23.1,SSN=BSSAP
Fri Aug  3 14:20:53 2018 DLSS7 <001f> m3ua.c:507 XUA_AS(as-clnt-msc-0)[0x55ca2cae06d0]{AS_DOWN}: Event AS-TRANSFER.req not permitted
Fri Aug  3 14:20:53 2018 DMSC <0007> a_reset.c:110 A-RESET(msc-0)[0x55ca2cae15e0]{DISC}: state_chg to DISC
Fri Aug  3 14:20:54 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=0): meas_rep_count++=41 meas_rep_last_seen_nr=40
Fri Aug  3 14:20:54 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=1): meas_rep_count++=39 meas_rep_last_seen_nr=38
Fri Aug  3 14:20:54 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=0): meas_rep_count++=42 meas_rep_last_seen_nr=41
Fri Aug  3 14:20:54 2018 DRSL <0003> abis_rsl.c:1057 (bts=0,trx=0,ts=0,ss=1): meas_rep_count++=40 meas_rep_last_seen_nr=39
Fri Aug  3 14:20:54 2018 DMSC <0007> bsc_subscr_conn_fsm.c:631 SUBSCR_CONN[0x55ca2caf1d30]{INIT}: state_chg to CLEARING
Assert failed conn->sccp.msc osmo_bsc_sigtran.c:351
backtrace() returned 12 addresses
/usr/local/lib/libosmocore.so.11(osmo_panic+0xbb) [0x7ff2f4cad67b]
/usr/local/bin/osmo-bsc(+0x72684) [0x55ca2bade684]
/usr/local/bin/osmo-bsc(+0x3526c) [0x55ca2baa126c]
/usr/local/bin/osmo-bsc(+0x5d553) [0x55ca2bac9553]
/usr/local/lib/libosmocore.so.11(_osmo_fsm_inst_dispatch+0x113) [0x7ff2f4ca7ba3]
/usr/local/bin/osmo-bsc(+0x28fd1) [0x55ca2ba94fd1]
/usr/local/lib/libosmoabis.so.6(ipaccess_fd_cb+0x112) [0x7ff2f4a8aba2]
/usr/local/lib/libosmocore.so.11(osmo_select_main+0x1de) [0x7ff2f4ca448e]
/usr/local/bin/osmo-bsc(+0x154a7) [0x55ca2ba814a7]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7ff2f42be2b1]
/usr/local/bin/osmo-bsc(+0x154fa) [0x55ca2ba814fa]
signal 6 received
talloc report on 'vty' (total 258190 bytes in 14537 blocks)
    save_cwd                       contains     33 bytes in   1 blocks (ref 0) 0x55ca2c90cdc0
    vty_command                    contains 155283 bytes in 8554 blocks (ref 0) 0x55ca2c8fa080
    vty_vector                     contains 102874 bytes in 5981 blocks (ref 0) 0x55ca2c8fa010
full talloc report on 'osmo-bsc' (total 453755 bytes in 354 blocks)
    telnet_connection              contains      1 bytes in   1 blocks (ref 0) 0x55ca2cac2350
    struct osmo_ss7_instance       contains   3521 bytes in  27 blocks (ref 0) 0x55ca2cacfff0
        struct osmo_sccp_instance      contains    190 bytes in   3 blocks (ref 0) 0x55ca2cae1360
            struct osmo_sccp_user          contains     86 bytes in   2 blocks (ref 0) 0x55ca2cae1430
                msc-0                          contains      6 bytes in   1 blocks (ref 0) 0x55ca2cae14f0
        struct osmo_ss7_asp            contains   1044 bytes in  11 blocks (ref 0) 0x55ca2cae0b10
            struct osmo_fsm_inst           contains    351 bytes in   4 blocks (ref 0) 0x55ca2cae1050
                struct xua_asp_fsm_priv        contains    104 bytes in   1 blocks (ref 0) 0x55ca2cae1290
                XUA_ASP(asp-clnt-msc-0)[0x55ca2cae1050] contains     40 bytes in   1 blocks (ref 0) 0x55ca2cae1200
                asp-clnt-msc-0                 contains     15 bytes in   1 blocks (ref 0) 0x55ca2cae1180
            struct osmo_stream_cli         contains    224 bytes in   1 blocks (ref 0) 0x55ca2cae0f00
            struct osmo_fsm_inst           contains    262 bytes in   4 blocks (ref 0) 0x55ca2cae0cc0
                struct lm_fsm_priv             contains      8 bytes in   1 blocks (ref 0) 0x55ca2cae0e90
                xua_default_lm(asp-clnt-msc-0)[0x55ca2cae0cc0] contains     47 bytes in   1 blocks (ref 0) 0x55ca2cae0df0
                asp-clnt-msc-0                 contains     15 bytes in   1 blocks (ref 0) 0x55ca2cae0a90
            asp-clnt-msc-0                 contains     15 bytes in   1 blocks (ref 0) 0x55ca2cae0c40
        struct osmo_ss7_as             contains    586 bytes in   6 blocks (ref 0) 0x55ca2cae0500