I tried Ubuntu 14.04 amd64 and Segmantation error disappeared. I can connect to my network, register subscribers, perform USSD but now I cannot receive SMS.
In NITB logs I can see an error. <0022> gsm0411_smc.c:331 SMC(0) cannot release yet current state: WAIT_CP_ACK
<0002> gsm_04_08.c:1016 <- CM SERVICE REQUEST serv_type=0x04 MI(TMSI)=3404602319
<0002> gsm_04_08_utils.c:662 -> CM SERVICE ACK
<0002> gsm_subscriber.c:341 Subscriber 250996689298609 ATTACHED LAC=0
<0000> abis_rsl.c:2051 (bts=0,trx=0,ts=1,ss=0) SAPI=3 ESTABLISH INDICATION
<0000> abis_rsl.c:2051 (bts=0,trx=0,ts=1,ss=0) SAPI=3 ESTABLISH INDICATION
<0000> abis_rsl.c:2051 (bts=0,trx=0,ts=1,ss=0) SAPI=3 DATA INDICATION
<0000> gsm_04_08.c:3999 Dispatching 04.08 message, pdisc=9
<0001> transaction.c:71 subscr=0x26a3110, net=0x255cd50
<0022> gsm0411_smc.c:331 SMC(0) cannot release yet current state: WAIT_CP_ACK
<0000> abis_rsl.c:2051 (bts=0,trx=0,ts=1,ss=0) SAPI=3 DATA INDICATION
<0000> gsm_04_08.c:3999 Dispatching 04.08 message, pdisc=9
<0000> chan_alloc.c:486 (bts=0,trx=0,ts=1,ss=0) starting release sequence
<0004> abis_rsl.c:1221 (bts=0,trx=0,ts=1,ss=0) state ACTIVE -> RELEASE REQUESTED
<0000> abis_rsl.c:1191 (bts=0,trx=0,ts=1,ss=0) RSL RLL RELEASE REQ (link_id=0x43, reason=1)
<0003> gsm_04_08_utils.c:251 Sending Channel Release: Chan: Number: 0 Type: 3
<0004> abis_rsl.c:767 (bts=0,trx=0,ts=1,ss=0) DEACTivate SACCH CMD
<0000> abis_rsl.c:2051 (bts=0,trx=0,ts=1,ss=0) SAPI=3 RELEASE CONFIRMATION
<0004> abis_rsl.c:2022 (bts=0,trx=0,ts=1,ss=0) waiting for SAPI=0 to be released.
<0000> abis_rsl.c:2051 (bts=0,trx=0,ts=1,ss=0) SAPI=0 RELEASE INDICATION
<0004> abis_rsl.c:1715 (bts=0,trx=0,ts=1,ss=0) T3111 expired: releasing RF Channel
<0004> abis_rsl.c:859 (bts=0,trx=0,ts=1,ss=0) RF Channel Release
<0004> abis_rsl.c:929 (bts=0,trx=0,ts=1,ss=0) RF CHANNEL RELEASE ACK
<0004> abis_rsl.c:1221 (bts=0,trx=0,ts=1,ss=0) state RELEASE REQUESTED -> NONE