Public bug reported:
Description:Ubuntu 14.04.3 LTS
Release:14.04
The Samba 'panic action' script, /usr/share/samba/panic-action,
was called for PID 26738 (/usr/sbin/smbd).
This means there was a problem with the program, such as a segfault.
Below is a backtrace for this process generated with gdb, which shows
the state of the program at the time the error occurred. The Samba log
files may contain additional information about the problem.
If the problem persists, you are encouraged to first install the
samba-dbg package, which contains the debugging symbols for the Samba
binaries. Then submit the provided information as a bug report to
Ubuntu by visiting this link:
https://launchpad.net/ubuntu/+source/samba/+filebug
[Thread debugging using libthread_db enabled]
Using host libthread_db library /lib/x86_64-linux-gnu/libthread_db.so.1.
0x7f9955f6eb4c in __libc_waitpid (pid=28019,
stat_loc=stat_loc@entry=0x7ffe73814640, options=options@entry=0) at
../sysdeps/unix/sysv/linux/waitpid.c:31
#0 0x7f9955f6eb4c in __libc_waitpid (pid=28019,
stat_loc=stat_loc@entry=0x7ffe73814640, options=options@entry=0) at
../sysdeps/unix/sysv/linux/waitpid.c:31
#1 0x7f9955ef42e2 in do_system (line=line@entry=0x7f9959aa0f20
/usr/share/samba/panic-action 26738) at ../sysdeps/posix/system.c:148
#2 0x7f9955ef464a in __libc_system (line=line@entry=0x7f9959aa0f20
/usr/share/samba/panic-action 26738) at ../sysdeps/posix/system.c:184
#3 0x7f9958fd8235 in system (line=line@entry=0x7f9959aa0f20
/usr/share/samba/panic-action 26738) at pt-system.c:28
#4 0x7f9957888061 in smb_panic_s3 (why=optimized out) at
../source3/lib/util.c:798
#5 0x7f9958db0c6f in smb_panic (why=why@entry=0x7f9958ab9f00 assert
failed: conn-force_group_gid != (gid_t)-1) at ../lib/util/fault.c:159
#6 0x7f9958979116 in change_to_user_internal
(conn=conn@entry=0x7f9959aa19c0, session_info=optimized out, vuid=831126676)
at ../source3/smbd/uid.c:317
#7 0x7f9958979203 in change_to_user (conn=conn@entry=0x7f9959aa19c0,
vuid=optimized out) at ../source3/smbd/uid.c:396
#8 0x7f99589a1cef in make_connection_snum
(sconn=sconn@entry=0x7f9959a47370, conn=conn@entry=0x7f9959aa19c0,
snum=snum@entry=5, pdev=pdev@entry=0x7f9958aabb2f ???, vuser=0x7f9959a6edb0,
vuser=0x7f9959a6edb0) at ../source3/smbd/service.c:730
#9 0x7f99589a289c in make_connection_smb2 (sconn=0x7f9959a47370,
tcon=0x7f9959a610c0, snum=snum@entry=5, vuser=0x7f9959a6edb0,
pdev=pdev@entry=0x7f9958aabb2f ???, pstatus=pstatus@entry=0x7ffe73814b50) at
../source3/smbd/service.c:974
#10 0x7f99589b9214 in smbd_smb2_tree_connect (out_tree_id=0x7f9959acece8,
out_maximal_access=0x7f9959acece4, out_capabilities=0x7f9959acece0,
out_share_flags=0x7f9959acecdc, out_share_type=0x7f9959acecd8 ,
in_path=optimized out, req=0x7f9959ace650) at ../source3/smbd/smb2_tcon.c:269
#11 smbd_smb2_tree_connect_send (in_path=optimized out,
smb2req=0x7f9959ace650, ev=0x7f9959a14030, mem_ctx=0x7f9959ace650) at
../source3/smbd/smb2_tcon.c:372
#12 smbd_smb2_request_process_tcon (req=req@entry=0x7f9959ace650) at
../source3/smbd/smb2_tcon.c:92
#13 0x7f99589b2f8d in smbd_smb2_request_dispatch
(req=req@entry=0x7f9959ace650) at ../source3/smbd/smb2_server.c:2130
#14 0x7f99589b3c3b in smbd_smb2_io_handler (sconn=0x7f9959a47370,
fde_flags=optimized out) at ../source3/smbd/smb2_server.c:3253
#15 0x7f99589b48bc in smbd_smb2_connection_handler (ev=0x6d73,
fde=0x7ffe73814640, flags=0, private_data=0x) at
../source3/smbd/smb2_server.c:3291
#16 0x7f995789e09c in run_events_poll (ev=0x7f9959a14030,
pollrtn=optimized out, pfds=0x7f9959a57020, num_pfds=4) at
../source3/lib/events.c:257
#17 0x7f995789e2f0 in s3_event_loop_once (ev=0x7f9959a14030,
location=optimized out) at ../source3/lib/events.c:326
#18 0x7f99562765ed in _tevent_loop_once () from
/usr/lib/x86_64-linux-gnu/libtevent.so.0
#19 0x7f99589a055a in smbd_process (ev_ctx=0x7f9959a14030,
msg_ctx=optimized out, sock_fd=optimized out, interactive=optimized out)
at ../source3/smbd/process.c:3626
#20 0x7f9959414fa4 in smbd_accept_connection (ev=0x7f9959a14030,
fde=optimized out, flags=optimized out, private_data=optimized out) at
../source3/smbd/server.c:621
#21 0x7f995789e09c in run_events_poll (ev=0x7f9959a14030,
pollrtn=optimized out, pfds=0x7f9959a57020, num_pfds=5) at
../source3/lib/events.c:257
#22 0x7f995789e2f0 in s3_event_loop_once (ev=0x7f9959a14030,
location=optimized out) at ../source3/lib/events.c:326
#23 0x7f99562765ed in _tevent_loop_once () from
/usr/lib/x86_64-linux-gnu/libtevent.so.0
#24 0x7f9959411b8b in smbd_parent_loop (parent=optimized out,
ev_ctx=0x7f9959a14030) at ../source3/smbd/server.c:943
#25 main (argc=optimized out, argv=optimized out) at
../source3/smbd/server.c:1577
A debugging session is active.
Inferior 1 [process 26738] will be detached.
testparm:
Load smb config files from
