[Pkg-samba-maint] Bug#797637: samba panic segfault in(?) smbd_smb2_request_reply (smb2_server.c:2407)
raf
raf at raf.org
Tue Sep 1 05:41:04 UTC 2015
Package: samba
Version: 2:4.1.17+dfsg-2
Severity: important
Tags: upstream
Dear Maintainer,
* What led up to the situation?
I have received 5 panic action emails from samba recently.
I installed gdb and samba-dbg as suggested in the emails
to get a stacktrace. The panics have only happened for a
single user (there are only a few) and I think that it only
happens when they are connected to the LAN via openvpn
but I'm not entirely sure of that. The openvpn server is a
different host which is masquerading openvpn traffic. The
fact that this is the only user that does connect via openvpn
and uses samba might be relevant. However, there seems to be
no other issues involving openvpn so it may not be relevant.
I have just upgraded from debian7 to debian8 but I think that
the samba that was installed was a backport (I didn't install it)
so It's probably that the version of samba didn't change with
the upgrade.
The first panic email was just before the upgrade to debian8.
Also, I recently changed the smb.conf to be more "secure" in
accordance with the instructions from Rapid7's Nexpose
vulnerability scanner. One of the changes that may or may not
be relevant is that all packets are being signed.
* What exactly did you do (or not do) that was effective (or
ineffective)?
I just asked the user if they noticed a problem. They said that
the everything on the mapped drive disappeared and when they
disconnect and recommect, the files came back. I warned them
that this is likely to continue and to repeat their workaround
when it does.
* What was the outcome of this action?
* What outcome did you expect instead?
-- System Information:
Debian Release: 8.1
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages samba depends on:
ii adduser 3.113+nmu3
ii dpkg 1.17.25
ii libasn1-8-heimdal 1.6~rc2+dfsg-9
ii libbsd0 0.7.0-2
ii libc6 2.19-18
ii libcomerr2 1.42.12-1.1
ii libhdb9-heimdal [heimdal-hdb-api-8] 1.6~rc2+dfsg-9
ii libkdc2-heimdal 1.6~rc2+dfsg-9
ii libkrb5-26-heimdal 1.6~rc2+dfsg-9
ii libldb1 2:1.1.17-2
ii libpam-modules 1.1.8-3.1
ii libpam-runtime 1.1.8-3.1
ii libpopt0 1.16-10
ii libpython2.7 2.7.9-2
ii libroken18-heimdal 1.6~rc2+dfsg-9
ii libtalloc2 2.1.1-2
ii libtdb1 1.3.1-1
ii libtevent0 0.9.21-1
ii lsb-base 4.1+Debian13+nmu1
ii multiarch-support 2.19-18
ii procps 2:3.3.9-9
ii python 2.7.9-1
ii python-dnspython 1.12.0-1
ii python-ntdb 1.0-5
ii python-samba 2:4.1.17+dfsg-2
pn python2.7:any <none>
ii samba-common 2:4.1.17+dfsg-2
ii samba-common-bin 2:4.1.17+dfsg-2
ii samba-dsdb-modules 2:4.1.17+dfsg-2
ii samba-libs 2:4.1.17+dfsg-2
ii tdb-tools 1.3.1-1
ii update-inetd 4.43
Versions of packages samba recommends:
ii attr 1:2.4.47-2
ii logrotate 3.8.7-1+b1
ii samba-vfs-modules 2:4.1.17+dfsg-2
Versions of packages samba suggests:
ii bind9 1:9.9.5.dfsg-9+deb8u2
ii bind9utils 1:9.9.5.dfsg-9+deb8u2
pn ctdb <none>
pn ldb-tools <none>
ii ntp 1:4.2.6.p5+dfsg-7
pn smbldap-tools <none>
pn winbind <none>
-- no debconf information
-------------- next part --------------
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fb98ef8330c in __libc_waitpid (pid=18940, stat_loc=stat_loc at entry=0x7ffd3bef1290,
options=options at entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:31
#0 0x00007fb98ef8330c in __libc_waitpid (pid=18940, stat_loc=stat_loc at entry=0x7ffd3bef1290,
options=options at entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:31
#1 0x00007fb98ef0d18b in do_system (line=line at entry=0x7fb9947bbaf0 "/usr/share/samba/panic-action 18066") at
../sysdeps/posix/system.c:148
#2 0x00007fb98ef0d4fa in __libc_system (line=line at entry=0x7fb9947bbaf0 "/usr/share/samba/panic-action 18066")
at ../sysdeps/posix/system.c:184
#3 0x00007fb9922527c5 in system (line=line at entry=0x7fb9947bbaf0 "/usr/share/samba/panic-action 18066") at
pt-system.c:28
#4 0x00007fb9908a9401 in smb_panic_s3 (why=<optimized out>) at ../source3/lib/util.c:798
#5 0x00007fb992028caf in smb_panic (why=why at entry=0x7fb9920355fc "internal error") at ../lib/util/fault.c:159
#6 0x00007fb992028ecf in fault_report (sig=<optimized out>) at ../lib/util/fault.c:77
#7 sig_fault (sig=<optimized out>) at ../lib/util/fault.c:88
#8 <signal handler called>
#9 smbd_smb2_request_reply (req=<optimized out>) at ../source3/smbd/smb2_server.c:2407
#10 smbd_smb2_request_done_ex (req=0x7fb9947d2250, status=..., body=..., dyn=0x7fb9946a0cd0, location=0x0,
location at entry=0x7fb991d41ce8 "../source3/smbd/smb2_server.c:2646") at ../source3/smbd/smb2_server.c:2579
#11 0x00007fb991c1e699 in smbd_smb2_request_error_ex (req=req at entry=0x7fb9947d2250, status=status at entry=...,
info=0x7fb9947d2ac0, info at entry=0x0, location=location at entry=0x7fb991d4aef0
"../source3/smbd/smb2_notify.c:122") at ../source3/smbd/smb2_server.c:2646
#12 0x00007fb991c30fa4 in smbd_smb2_request_notify_done (subreq=<optimized out>) at
../source3/smbd/smb2_notify.c:122
#13 0x00007fb98f2797c4 in tevent_common_loop_immediate () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
#14 0x00007fb9908c7c6c in run_events_poll (ev=0x7fb99468fc20, pollrtn=0, pfds=0x0, num_pfds=0) at
../source3/lib/events.c:192
#15 0x00007fb9908c7f77 in s3_event_loop_once (ev=0x7fb99468fc20, location=<optimized out>) at
../source3/lib/events.c:303
#16 0x00007fb98f278f9d in _tevent_loop_once () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
#17 0x00007fb991c0cce4 in smbd_process (ev_ctx=0x7fb99468fc20, msg_ctx=0x7fb992241e00 <DEBUGLEVEL_CLASS>,
sock_fd=-1805058640, interactive=48) at ../source3/smbd/process.c:3695
#18 0x00007fb99268d1d0 in smbd_accept_connection (ev=0x7fb99468fc20, fde=<optimized out>, flags=<optimized
out>, private_data=<optimized out>) at ../source3/smbd/server.c:610
#19 0x00007fb9908c7da1 in run_events_poll (ev=0x7fb99468fc20, pollrtn=<optimized out>, pfds=0x7fb994697e90,
num_pfds=5) at ../source3/lib/events.c:257
#20 0x00007fb9908c8017 in s3_event_loop_once (ev=0x7fb99468fc20, location=<optimized out>) at
../source3/lib/events.c:326
#21 0x00007fb98f278f9d in _tevent_loop_once () from /usr/lib/x86_64-linux-gnu/libtevent.so.0
#22 0x00007fb992689f19 in smbd_parent_loop (parent=<optimized out>, ev_ctx=<optimized out>) at
../source3/smbd/server.c:934
#23 main (argc=-1805059040, argv=0x7fb994696880) at ../source3/smbd/server.c:1566
-------------- next part --------------
STATUS=daemon 'smbd' finished starting up and ready to serve connections===============================================================
[2015/08/14 09:28:19.290594, 0] ../lib/util/fault.c:73(fault_report)
INTERNAL ERROR: Signal 11 in pid 10522 (4.1.17-Debian)
Please read the Trouble-Shooting section of the Samba HOWTO
[2015/08/14 09:28:19.290780, 0] ../lib/util/fault.c:75(fault_report)
===============================================================
[2015/08/14 09:28:19.290902, 0] ../source3/lib/util.c:785(smb_panic_s3)
PANIC (pid 10522): internal error
[2015/08/14 09:28:19.310874, 0] ../source3/lib/util.c:896(log_stack_trace)
BACKTRACE: 20 stack frames:
#0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1a) [0x7f450dc57e1a]
#1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f450dc57ef0]
#2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7f450f3d670f]
#3 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(+0x1e906) [0x7f450f3d6906]
#4 /lib/x86_64-linux-gnu/libpthread.so.0(+0xf0a0) [0x7f450f5fd0a0]
#5 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_done_ex+0x67d) [0x7f450efdf9bd]
#6 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_error_ex+0xbb) [0x7f450efdcb0b]
#7 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x15a023) [0x7f450eff0023]
#8 /usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_immediate+0xe2) [0x7f450c61dca2]
#9 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x48) [0x7f450dc77808]
#10 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x47b1b) [0x7f450dc77b1b]
#11 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x9d) [0x7f450c61d3ed]
#12 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_process+0xb87) [0x7f450efca5e7]
#13 /usr/sbin/smbd(+0xa974) [0x7f450fa36974]
#14 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x187) [0x7f450dc77947]
#15 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x47bc9) [0x7f450dc77bc9]
#16 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x9d) [0x7f450c61d3ed]
#17 /usr/sbin/smbd(main+0x149b) [0x7f450fa3357b]
#18 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f450c2acead]
#19 /usr/sbin/smbd(+0x78a9) [0x7f450fa338a9]
[2015/08/14 09:28:19.312181, 0] ../source3/lib/util.c:797(smb_panic_s3)
smb_panic(): calling panic action [/usr/share/samba/panic-action 10522]
[2015/08/14 09:28:19.348599, 0] ../source3/lib/util.c:805(smb_panic_s3)
smb_panic(): action returned status 0
[2015/08/14 09:28:19.348866, 0] ../source3/lib/dumpcore.c:317(dump_core)
dumping core in /var/log/samba/cores/smbd
STATUS=daemon 'smbd' finished starting up and ready to serve connections===============================================================
[2015/08/28 12:21:10.375193, 0] ../lib/util/fault.c:73(fault_report)
INTERNAL ERROR: Signal 11 in pid 23124 (4.1.17-Debian)
Please read the Trouble-Shooting section of the Samba HOWTO
[2015/08/28 12:21:10.375301, 0] ../lib/util/fault.c:75(fault_report)
===============================================================
[2015/08/28 12:21:10.375359, 0] ../source3/lib/util.c:785(smb_panic_s3)
PANIC (pid 23124): internal error
[2015/08/28 12:21:10.376155, 0] ../source3/lib/util.c:896(log_stack_trace)
BACKTRACE: 20 stack frames:
#0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1a) [0x7fb9908a92ca]
#1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7fb9908a93b0]
#2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7fb992028caf]
#3 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(+0x1cecf) [0x7fb992028ecf]
#4 /lib/x86_64-linux-gnu/libpthread.so.0(+0xf8d0) [0x7fb9922528d0]
#5 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_done_ex+0x645) [0x7fb991c21d15]
#6 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_error_ex+0xa9) [0x7fb991c1e699]
#7 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x149fa4) [0x7fb991c30fa4]
#8 /usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_immediate+0xd4) [0x7fb98f2797c4]
#9 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x3c) [0x7fb9908c7c6c]
#10 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x43f77) [0x7fb9908c7f77]
#11 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#12 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_process+0xdb4) [0x7fb991c0cce4]
#13 /usr/sbin/smbd(+0xa1d0) [0x7fb99268d1d0]
#14 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x171) [0x7fb9908c7da1]
#15 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x44017) [0x7fb9908c8017]
#16 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#17 /usr/sbin/smbd(main+0x1589) [0x7fb992689f19]
#18 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fb98eeedb45]
#19 /usr/sbin/smbd(+0x713b) [0x7fb99268a13b]
[2015/08/28 12:21:10.376731, 0] ../source3/lib/util.c:797(smb_panic_s3)
smb_panic(): calling panic action [/usr/share/samba/panic-action 23124]
[2015/08/28 12:21:10.396931, 0] ../source3/lib/util.c:805(smb_panic_s3)
smb_panic(): action returned status 0
[2015/08/28 12:21:10.397067, 0] ../source3/lib/dumpcore.c:317(dump_core)
dumping core in /var/log/samba/cores/smbd
STATUS=daemon 'smbd' finished starting up and ready to serve connections===============================================================
[2015/08/29 07:06:20.684304, 0] ../lib/util/fault.c:73(fault_report)
INTERNAL ERROR: Signal 11 in pid 30013 (4.1.17-Debian)
Please read the Trouble-Shooting section of the Samba HOWTO
[2015/08/29 07:06:20.684395, 0] ../lib/util/fault.c:75(fault_report)
===============================================================
[2015/08/29 07:06:20.684481, 0] ../source3/lib/util.c:785(smb_panic_s3)
PANIC (pid 30013): internal error
[2015/08/29 07:06:20.685254, 0] ../source3/lib/util.c:896(log_stack_trace)
BACKTRACE: 20 stack frames:
#0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1a) [0x7fb9908a92ca]
#1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7fb9908a93b0]
#2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7fb992028caf]
#3 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(+0x1cecf) [0x7fb992028ecf]
#4 /lib/x86_64-linux-gnu/libpthread.so.0(+0xf8d0) [0x7fb9922528d0]
#5 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_done_ex+0x645) [0x7fb991c21d15]
#6 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_error_ex+0xa9) [0x7fb991c1e699]
#7 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x149fa4) [0x7fb991c30fa4]
#8 /usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_immediate+0xd4) [0x7fb98f2797c4]
#9 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x3c) [0x7fb9908c7c6c]
#10 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x43f77) [0x7fb9908c7f77]
#11 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#12 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_process+0xdb4) [0x7fb991c0cce4]
#13 /usr/sbin/smbd(+0xa1d0) [0x7fb99268d1d0]
#14 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x171) [0x7fb9908c7da1]
#15 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x44017) [0x7fb9908c8017]
#16 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#17 /usr/sbin/smbd(main+0x1589) [0x7fb992689f19]
#18 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fb98eeedb45]
#19 /usr/sbin/smbd(+0x713b) [0x7fb99268a13b]
[2015/08/29 07:06:20.685809, 0] ../source3/lib/util.c:797(smb_panic_s3)
smb_panic(): calling panic action [/usr/share/samba/panic-action 30013]
31 ../sysdeps/unix/sysv/linux/waitpid.c: No such file or directory.
[2015/08/29 07:06:21.588116, 0] ../source3/lib/util.c:805(smb_panic_s3)
smb_panic(): action returned status 0
[2015/08/29 07:06:21.588263, 0] ../source3/lib/dumpcore.c:317(dump_core)
dumping core in /var/log/samba/cores/smbd
STATUS=daemon 'smbd' finished starting up and ready to serve connections===============================================================
[2015/09/01 14:00:21.065999, 0] ../lib/util/fault.c:73(fault_report)
INTERNAL ERROR: Signal 11 in pid 18066 (4.1.17-Debian)
Please read the Trouble-Shooting section of the Samba HOWTO
[2015/09/01 14:00:21.066088, 0] ../lib/util/fault.c:75(fault_report)
===============================================================
[2015/09/01 14:00:21.066146, 0] ../source3/lib/util.c:785(smb_panic_s3)
PANIC (pid 18066): internal error
[2015/09/01 14:00:21.066913, 0] ../source3/lib/util.c:896(log_stack_trace)
BACKTRACE: 20 stack frames:
#0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1a) [0x7fb9908a92ca]
#1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7fb9908a93b0]
#2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7fb992028caf]
#3 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(+0x1cecf) [0x7fb992028ecf]
#4 /lib/x86_64-linux-gnu/libpthread.so.0(+0xf8d0) [0x7fb9922528d0]
#5 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_done_ex+0x645) [0x7fb991c21d15]
#6 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_error_ex+0xa9) [0x7fb991c1e699]
#7 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x149fa4) [0x7fb991c30fa4]
#8 /usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_immediate+0xd4) [0x7fb98f2797c4]
#9 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x3c) [0x7fb9908c7c6c]
#10 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x43f77) [0x7fb9908c7f77]
#11 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#12 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_process+0xdb4) [0x7fb991c0cce4]
#13 /usr/sbin/smbd(+0xa1d0) [0x7fb99268d1d0]
#14 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x171) [0x7fb9908c7da1]
#15 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x44017) [0x7fb9908c8017]
#16 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#17 /usr/sbin/smbd(main+0x1589) [0x7fb992689f19]
#18 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fb98eeedb45]
#19 /usr/sbin/smbd(+0x713b) [0x7fb99268a13b]
[2015/09/01 14:00:21.067522, 0] ../source3/lib/util.c:797(smb_panic_s3)
smb_panic(): calling panic action [/usr/share/samba/panic-action 18066]
31 ../sysdeps/unix/sysv/linux/waitpid.c: No such file or directory.
[2015/09/01 14:00:22.575737, 0] ../source3/lib/util.c:805(smb_panic_s3)
smb_panic(): action returned status 0
[2015/09/01 14:00:22.575881, 0] ../source3/lib/dumpcore.c:317(dump_core)
dumping core in /var/log/samba/cores/smbd
STATUS=daemon 'smbd' finished starting up and ready to serve connections===============================================================
[2015/09/01 14:53:47.234204, 0] ../lib/util/fault.c:73(fault_report)
INTERNAL ERROR: Signal 11 in pid 18939 (4.1.17-Debian)
Please read the Trouble-Shooting section of the Samba HOWTO
[2015/09/01 14:53:47.234308, 0] ../lib/util/fault.c:75(fault_report)
===============================================================
[2015/09/01 14:53:47.234369, 0] ../source3/lib/util.c:785(smb_panic_s3)
PANIC (pid 18939): internal error
[2015/09/01 14:53:47.235207, 0] ../source3/lib/util.c:896(log_stack_trace)
BACKTRACE: 20 stack frames:
#0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1a) [0x7fb9908a92ca]
#1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7fb9908a93b0]
#2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7fb992028caf]
#3 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(+0x1cecf) [0x7fb992028ecf]
#4 /lib/x86_64-linux-gnu/libpthread.so.0(+0xf8d0) [0x7fb9922528d0]
#5 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_done_ex+0x645) [0x7fb991c21d15]
#6 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_error_ex+0xa9) [0x7fb991c1e699]
#7 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x149fa4) [0x7fb991c30fa4]
#8 /usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_immediate+0xd4) [0x7fb98f2797c4]
#9 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x3c) [0x7fb9908c7c6c]
#10 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x43f77) [0x7fb9908c7f77]
#11 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#12 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_process+0xdb4) [0x7fb991c0cce4]
#13 /usr/sbin/smbd(+0xa1d0) [0x7fb99268d1d0]
#14 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x171) [0x7fb9908c7da1]
#15 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x44017) [0x7fb9908c8017]
#16 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7fb98f278f9d]
#17 /usr/sbin/smbd(main+0x1589) [0x7fb992689f19]
#18 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fb98eeedb45]
#19 /usr/sbin/smbd(+0x713b) [0x7fb99268a13b]
[2015/09/01 14:53:47.235938, 0] ../source3/lib/util.c:797(smb_panic_s3)
smb_panic(): calling panic action [/usr/share/samba/panic-action 18939]
31 ../sysdeps/unix/sysv/linux/waitpid.c: No such file or directory.
[2015/09/01 14:53:48.751674, 0] ../source3/lib/util.c:805(smb_panic_s3)
smb_panic(): action returned status 0
[2015/09/01 14:53:48.751828, 0] ../source3/lib/dumpcore.c:317(dump_core)
dumping core in /var/log/samba/cores/smbd
-------------- next part --------------
[global]
netbios name = fileserver
workgroup = WORKGROUP
dns proxy = no
domain master = no
local master = yes
preferred master = yes
os level = 65
log file = /var/log/samba/log.%m
max log size = 1000
syslog = 0
panic action = /usr/share/samba/panic-action %d
server role = standalone server
server signing = mandatory
passdb backend = tdbsam
obey pam restrictions = yes
unix password sync = no
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
pam password change = yes
map to guest = Never
guest account = nobody
restrict anonymous = 2
usershare allow guests = no
[FILES]
path=/home/samba/files
browseable=yes
writeable=yes
create mask = 0660
directory mask = 2770
valid users = user1 user2 user3 user4 user5 user6
admin users = user1 user2
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