#0  0x00007f8f4377e425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) where
#0  0x00007f8f4377e425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f8f43781b8b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f8f46bcf53b in dump_core () at lib/fault.c:391
#3  0x00007f8f46bddc01 in smb_panic (why=<optimized out>) at lib/util.c:1133
#4  0x00007f8f46bcee88 in fault_report (sig=6) at lib/fault.c:53
#5  sig_fault (sig=6) at lib/fault.c:76
#6  <signal handler called>
#7  0x00007f8f4377e425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f8f43781b8b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007f8f437bc39e in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#10 0x00007f8f437c6b96 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x00007f8f45f1bb78 in gss_release_buffer () from /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2
#12 0x00007f8f46c4b182 in gse_get_pac_blob (gse_ctx=<optimized out>, mem_ctx=0x7f8f4778a4e0, pac_blob=<optimized out>) at librpc/crypto/gse.c:731
#13 0x00007f8f46ae21ab in gssapi_server_get_user_info (gse_ctx=0x7f8f47790030, mem_ctx=0x7f8f47786660, client_id=0x7f8f477705e8, server_info=0x7f8f47786688)
    at rpc_server/dcesrv_gssapi.c:127
#14 0x00007f8f46ad667d in pipe_gssapi_verify_final (mem_ctx=0x7f8f47786660, gse_ctx=0x7f8f47790030, client_id=0x7f8f477705e8, session_info=0x7f8f47786688)
    at rpc_server/srv_pipe.c:734
#15 0x00007f8f46ad806a in pipe_auth_verify_final (p=0x7f8f47786660) at rpc_server/srv_pipe.c:814
#16 0x00007f8f46ada25b in api_pipe_alter_context (pkt=0x7f8f47790f30, p=0x7f8f47786660) at rpc_server/srv_pipe.c:1403
#17 process_complete_pdu (p=0x7f8f47786660) at rpc_server/srv_pipe.c:1955
#18 0x00007f8f46ada94b in process_incoming_data (p=0x7f8f47786660, data=0x7f8f47792db4 "\270\020\270\020", n=<optimized out>) at rpc_server/srv_pipe_hnd.c:218
#19 0x00007f8f46adb02e in write_to_internal_pipe (n=177, data=0x7f8f47792db4 "\270\020\270\020", p=0x7f8f47786660) at rpc_server/srv_pipe_hnd.c:244
#20 np_write_send (mem_ctx=<optimized out>, ev=0x7f8f47770520, handle=<optimized out>, data=<optimized out>, len=177) at rpc_server/srv_pipe_hnd.c:538
#21 0x00007f8f468ef967 in reply_pipe_write_and_X (req=0x7f8f47792eb0) at smbd/pipes.c:322
#22 0x00007f8f468f9308 in reply_write_and_X (req=0x7f8f47792eb0) at smbd/reply.c:4529
#23 0x00007f8f4693bfa4 in switch_message (type=47 '/', req=0x7f8f47792eb0, size=245) at smbd/process.c:1574
#24 0x00007f8f4693c3bb in construct_reply (deferred_pcd=0x0, encrypted=false, seqnum=<optimized out>, unread_bytes=0, size=245, inbuf=0x0, sconn=0x7f8f477705e0)
    at smbd/process.c:1610
#25 process_smb (sconn=0x7f8f477705e0, inbuf=<optimized out>, nread=245, unread_bytes=0, seqnum=<optimized out>, encrypted=false, deferred_pcd=0x0) at smbd/process.c:1688
#26 0x00007f8f4693c7d3 in smbd_server_connection_read_handler (conn=0x7f8f477705e0, fd=24) at smbd/process.c:2317
#27 0x00007f8f46bed8ae in run_events_poll (num_pfds=2, pfds=0x7f8f4777b040, pollrtn=<optimized out>, ev=0x7f8f47770520) at lib/events.c:286
#28 run_events_poll (ev=0x7f8f47770520, pollrtn=<optimized out>, pfds=0x7f8f4777b040, num_pfds=2) at lib/events.c:184
#29 0x00007f8f4693df42 in smbd_server_connection_loop_once (conn=0x7f8f477705e0) at smbd/process.c:1017
#30 smbd_process (sconn=0x7f8f477705e0) at smbd/process.c:3158
#31 0x00007f8f46e4b66f in smbd_accept_connection (ev=<optimized out>, fde=<optimized out>, flags=<optimized out>, private_data=<optimized out>) at smbd/server.c:511
#32 0x00007f8f46bed8ae in run_events_poll (num_pfds=3, pfds=0x7f8f477732e0, pollrtn=<optimized out>, ev=0x7f8f47770520) at lib/events.c:286
#33 run_events_poll (ev=0x7f8f47770520, pollrtn=<optimized out>, pfds=0x7f8f477732e0, num_pfds=3) at lib/events.c:184
#34 0x00007f8f46beda4a in s3_event_loop_once (ev=0x7f8f47770520, location=<optimized out>) at lib/events.c:349
#35 0x00007f8f46bee5d0 in _tevent_loop_once (ev=0x7f8f47770520, location=0x7f8f470502d7 "smbd/server.c:844") at ../lib/tevent/tevent.c:494
#36 0x00007f8f468bc030 in smbd_parent_loop (parent=<optimized out>) at smbd/server.c:844
#37 main (argc=<optimized out>, argv=<optimized out>) at smbd/server.c:1326