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[Artyom Sokirko <1829754@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description:    Ubuntu 16.04.6 LTS

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f335f05307a in __GI___waitpid (pid=12698, stat_loc=stat_loc@entry=0x7ffee07e61d0, options=options@entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
#0  0x00007f335f05307a in __GI___waitpid (pid=12698, stat_loc=stat_loc@entry=0x7ffee07e61d0, options=options@entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
#1  0x00007f335efcbfbb in do_system (line=line@entry=0x55b208dd31f0 "/usr/share/samba/panic-action 12695") at ../sysdeps/posix/system.c:148
#2  0x00007f335efcc39a in __libc_system (line=line@entry=0x55b208dd31f0 "/usr/share/samba/panic-action 12695") at ../sysdeps/posix/system.c:184
#3  0x00007f3361a778d1 in smb_panic_s3 (why=<optimized out>) at ../source3/lib/util.c:802
#4  0x00007f33627eaf1f in smb_panic (why=why@entry=0x7f336282eab8 "internal error") at ../lib/util/fault.c:166
#5  0x00007f33627eb136 in fault_report (sig=<optimized out>) at ../lib/util/fault.c:83
#6  sig_fault (sig=<optimized out>) at ../lib/util/fault.c:94
#7  <signal handler called>
#8  smbXsrv_session_create (conn=conn@entry=0x55b208dcdb10, now=now@entry=132028345285313810, _session=_session@entry=0x7ffee07e6a30) at ../source3/smbd/smbXsrv_session.c:1158
#9  0x00007f336237c643 in reply_sesssetup_and_X (req=req@entry=0x55b208dd1b90) at ../source3/smbd/sesssetup.c:953
#10 0x00007f33623b8e67 in switch_message (type=<optimized out>, req=req@entry=0x55b208dd1b90) at ../source3/smbd/process.c:1649
#11 0x00007f33623babb3 in construct_reply (deferred_pcd=0x0, encrypted=false, seqnum=0, unread_bytes=0, size=76, inbuf=0x0, xconn=0x55b208dcdb10) at ../source3/smbd/process.c:1685
#12 process_smb (xconn=xconn@entry=0x55b208dcdb10, inbuf=<optimized out>, nread=76, unread_bytes=0, seqnum=0, encrypted=<optimized out>, deferred_pcd=0x0) at ../source3/smbd/process.c:1932
#13 0x00007f33623bc21c in smbd_server_connection_read_handler (xconn=0x55b208dcdb10, fd=38) at ../source3/smbd/process.c:2531
#14 0x00007f336070a917 in run_events_poll (ev=0x55b208db9cc0, pollrtn=<optimized out>, pfds=0x55b208dc7e60, num_pfds=4) at ../source3/lib/events.c:257
#15 0x00007f336070ab77 in s3_event_loop_once (ev=0x55b208db9cc0, location=<optimized out>) at ../source3/lib/events.c:326
#16 0x00007f335f354d3d in _tevent_loop_once () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
#17 0x00007f335f354edb in tevent_common_loop_wait () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
#18 0x00007f33623bd578 in smbd_process (ev_ctx=0x55b208db9cc0, msg_ctx=<optimized out>, sock_fd=38, interactive=<optimized out>) at ../source3/smbd/process.c:4032
#19 0x000055b207520e12 in smbd_accept_connection (ev=0x55b208db9cc0, fde=<optimized out>, flags=<optimized out>, private_data=<optimized out>) at ../source3/smbd/server.c:646
#20 0x00007f336070a917 in run_events_poll (ev=0x55b208db9cc0, pollrtn=<optimized out>, pfds=0x55b208dc7e60, num_pfds=6) at ../source3/lib/events.c:257
#21 0x00007f336070ab77 in s3_event_loop_once (ev=0x55b208db9cc0, location=<optimized out>) at ../source3/lib/events.c:326
#22 0x00007f335f354d3d in _tevent_loop_once () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
#23 0x00007f335f354edb in tevent_common_loop_wait () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
#24 0x000055b20751f099 in smbd_parent_loop (parent=0x55b208dbd470, ev_ctx=0x55b208db9cc0) at ../source3/smbd/server.c:1011
#25 main (argc=<optimized out>, argv=<optimized out>) at ../source3/smbd/server.c:1663
A debugging session is active.

        Inferior 1 [process 12695] will be detached.

Quit anyway? (y or n) [answered Y; input not from terminal]

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1829754

Title:
  Panic or segfault in Samba after migration to Ubuntu 16.04.6

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