Core was generated by `./osmo-nitb -m'.
Program terminated with signal 11, Segmentation fault.
#0  teip_from_tei (li=0x0, tei=1 '\001', sapi=0 '\000') at lapd.c:185
185             llist_for_each_entry(lt, &li->tei_list, list) {
(gdb) bt
#0  teip_from_tei (li=0x0, tei=1 '\001', sapi=0 '\000') at lapd.c:185
#1  lapd_sap_start (li=0x0, tei=1 '\001', sapi=0 '\000') at lapd.c:642
#2  0x000000000041e3fe in start_sabm_in_line (line=0x21e5430, start=1, sapi=0) at bts_nokia_site.c:108
#3  0x000000000041ec28 in abis_nm_rcvmsg_fom (mb=<value optimized out>) at bts_nokia_site.c:1600
#4  0x000000000041f3b4 in abis_nokia_rcvmsg (msg=0x22330f0) at bts_nokia_site.c:1675
#5  0x00007fdd06eda1eb in e1inp_rx_ts (ts=0x21e5458, msg=0x22330f0, tei=1 '\001', sapi=62 '>') at e1_input.c:515
#6  0x00007fdd06eda6b6 in e1inp_rx_ts_lapd (e1i_ts=0x21e5458, msg=0x22330f0) at e1_input.c:588
#7  0x00007fdd06edd900 in handle_ts1_read (bfd=0x21e59f8, what=1) at dahdi.c:129
#8  dahdi_fd_cb (bfd=0x21e59f8, what=1) at dahdi.c:315
#9  0x00007fdd0731153a in osmo_select_main (polling=0) at select.c:158
#10 0x0000000000406334 in main (argc=2, argv=0x7fff1c19eb38) at bsc_hack.c:294
(gdb) list
180     /* Resolve TEI structure from given numeric TEI */
181     static struct lapd_tei *teip_from_tei(struct lapd_instance *li, uint8_t tei)
182     {
183             struct lapd_tei *lt;
184
185             llist_for_each_entry(lt, &li->tei_list, list) {
186                     if (lt->tei == tei)
187                             return lt;
188             }
189             return NULL;