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Andreas Oster

2018-Nov-09 10:15 UTC

[Samba] Samba panic when accessing DNS domain entry with RSAT DNS tool

Hi everybody,

for some time now I have an issue with our samba/bind9-DLZ setup which 
became worse lately.
I use the RSAT DNS tool to configure DNS records. In the past it 
sometimes happened, that DNS died when accessing the domain zone. This 
condition could only be resolved by restarting samba on the affected DC.
Unfortunately the situation got worse and configuration/modification of 
entries in the domain zone is nearly impossible.

Connecting to the DNS is working but when I do select the domain zone I 
get the following in the log.samba log file:

<--

[2018/11/09 11:08:18.452913,  0] 
../source4/rpc_server/dnsserver/dcerpc_dnsserver.c:1089(dnsserver_query_zone)
   dnsserver: Invalid zone operation IsSigneddnsserver: Invalid zone 
operation IsSigneddnsserver: Invalid zone operation IsSigneddnsserver: 
Invalid zone operation IsSigneddnsserver: Invalid zone operation 
IsSigneddnsserver: Invalid zone operation IsSigneddnsserver: Invalid 
zone operation 
IsSigned==============================================================[2018/11/09
11:08:23.956220,  0] ../lib/util/fault.c:80(fault_report)
   INTERNAL ERROR: Signal 11 in pid 3901 (4.9.3-GIT-424d4d2b408)
   Please read the Trouble-Shooting section of the Samba HOWTO
[2018/11/09 11:08:23.956548,  0] ../lib/util/fault.c:82(fault_report)
   ==============================================================[2018/11/09
11:08:23.956634,  0] ../lib/util/fault.c:128(smb_panic_default)
   smb_panic_default: PANIC (pid 3901): internal error
[2018/11/09 11:08:23.957585,  0] ../lib/util/fault.c:261(log_stack_trace)
   BACKTRACE: 49 stack frames:
    #0 /usr/local/samba/lib/libsamba-util.so.0(log_stack_trace+0x2e) 
[0x7f2472c76562]
    #1 /usr/local/samba/lib/libsamba-util.so.0(+0x202e2) [0x7f2472c762e2]
    #2 /usr/local/samba/lib/libsamba-util.so.0(log_stack_trace+0) 
[0x7f2472c76534]
    #3 /usr/local/samba/lib/libsamba-util.so.0(+0x201e2) [0x7f2472c761e2]
    #4 /usr/local/samba/lib/libsamba-util.so.0(+0x201f7) [0x7f2472c761f7]
    #5 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x7f2472eea890]
    #6 
/usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_element+0x5e) 
[0x7f2472a2ac88]
    #7 
/usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_ldb_val+0x23) 
[0x7f2472a2bd6a]
    #8 
/usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_attr_as_string+0x27) 
[0x7f2472a2c41c]
    #9 /usr/local/samba/lib/libdcerpc-server.so.0(dns_name_compare+0x4e) 
[0x7f245b39eae2]
    #10 /usr/local/samba/lib/private/libldb.so.1(ldb_qsort+0x723) 
[0x7f2472a3ba6d]
    #11 /usr/local/samba/lib/libdcerpc-server.so.0(+0x65483) 
[0x7f245b398483]
    #12 /usr/local/samba/lib/libdcerpc-server.so.0(+0x66844) 
[0x7f245b399844]
    #13 /usr/local/samba/lib/libdcerpc-server.so.0(+0x6722c) 
[0x7f245b39a22c]
    #14 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2c371) 
[0x7f245b35f371]
    #15 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2cdea) 
[0x7f245b35fdea]
    #16 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2e808) 
[0x7f245b361808]
    #17 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) 
[0x7f24723d46a2]
    #18 /usr/local/samba/lib/private/libtevent.so.0(+0x8803) 
[0x7f24723d4803]
    #19 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25) 
[0x7f24723d4830]
    #20 /usr/local/samba/lib/libdcerpc-binding.so.0(+0x1e1f6) 
[0x7f246d20c1f6]
    #21 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) 
[0x7f24723d46a2]
    #22 /usr/local/samba/lib/private/libtevent.so.0(+0x8803) 
[0x7f24723d4803]
    #23 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25) 
[0x7f24723d4830]
    #24 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xd962) 
[0x7f246d425962]
    #25 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xdb9c) 
[0x7f246d425b9c]
    #26 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) 
[0x7f24723d46a2]
    #27 /usr/local/samba/lib/private/libtevent.so.0(+0x8803) 
[0x7f24723d4803]
    #28 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25) 
[0x7f24723d4830]
    #29 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xcda2) 
[0x7f246d424da2]
    #30 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) 
[0x7f24723d46a2]
    #31 /usr/local/samba/lib/private/libtevent.so.0(+0x8803) 
[0x7f24723d4803]
    #32 /usr/local/samba/lib/private/libtevent.so.0(+0x8930) 
[0x7f24723d4930]
    #33 
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_invoke_immediate_handler+0x184)
[0x7f24723d35a5]
    #34 
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_loop_immediate+0x37) 
[0x7f24723d36ab]
    #35 /usr/local/samba/lib/private/libtevent.so.0(+0x11d33) 
[0x7f24723ddd33]
    #36 /usr/local/samba/lib/private/libtevent.so.0(+0xe5d9) 
[0x7f24723da5d9]
    #37 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_once+0x11e) 
[0x7f24723d204f]
    #38 
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_loop_wait+0x25) 
[0x7f24723d23a1]
    #39 /usr/local/samba/lib/private/libtevent.so.0(+0xe67b) 
[0x7f24723da67b]
    #40 
/usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_wait+0x2b) 
[0x7f24723d2444]
    #41 /usr/local/samba/lib/process_model/standard.so(+0x27e9) 
[0x7f2464bfd7e9]
    #42 
/usr/local/samba/lib/private/libservice-samba4.so(task_server_startup+0x9b) 
[0x7f2471fafaf5]
    #43 /usr/local/samba/lib/private/libservice-samba4.so(+0x2afe) 
[0x7f2471fadafe]
    #44 
/usr/local/samba/lib/private/libservice-samba4.so(server_service_startup+0x166) 
[0x7f2471fadc83]
    #45 samba: task[dcesrv](+0x5ca6) [0x557afdceaca6]
    #46 samba: task[dcesrv](main+0x3f) [0x557afdceadb8]
    #47 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) 
[0x7f246fec9b97]
    #48 samba: task[dcesrv](_start+0x2a) [0x557afdce88ca]
[2018/11/09 11:08:24.463400,  0] 
../source4/smbd/process_standard.c:158(standard_child_pipe_handler)
   standard_child_pipe_handler: Child 3901 (rpc) terminated with signal 6
-->

Afterwards DNS is not working and samba needs to be restarted.
I have configured some additional zones which do not result in the same 
error when being accessed via the RSAT DNS tool.

Does anyone have an idea what could be the cause of the problem and how 
it could be resolved ?

Thank you very much for your kind support.

Best regards
Andreas

Mueller

2018-Nov-09 10:23 UTC

head link

[Samba] Samba panic when accessing DNS domain entry with RSAT DNS tool

I had this error when I did it from Windows 10. 
I usede a Windows 7 PC and everything was fine again.


Daniel Müller




-----Ursprüngliche Nachricht-----
Von: Andreas Oster via samba [mailto:samba at lists.samba.org] 
Gesendet: Freitag, 9. November 2018 11:16
An: samba at lists.samba.org
Betreff: [Samba] Samba panic when accessing DNS domain entry with RSAT DNS tool

Hi everybody,

for some time now I have an issue with our samba/bind9-DLZ setup which became
worse lately.
I use the RSAT DNS tool to configure DNS records. In the past it sometimes
happened, that DNS died when accessing the domain zone. This condition could
only be resolved by restarting samba on the affected DC.
Unfortunately the situation got worse and configuration/modification of entries
in the domain zone is nearly impossible.

Connecting to the DNS is working but when I do select the domain zone I get the
following in the log.samba log file:

<--

[2018/11/09 11:08:18.452913,  0]
../source4/rpc_server/dnsserver/dcerpc_dnsserver.c:1089(dnsserver_query_zone)
   dnsserver: Invalid zone operation IsSigneddnsserver: Invalid zone operation
IsSigneddnsserver: Invalid zone operation IsSigneddnsserver:
Invalid zone operation IsSigneddnsserver: Invalid zone operation
IsSigneddnsserver: Invalid zone operation IsSigneddnsserver: Invalid zone
operation
IsSigned==============================================================[2018/11/09
11:08:23.956220,  0] ../lib/util/fault.c:80(fault_report)
   INTERNAL ERROR: Signal 11 in pid 3901 (4.9.3-GIT-424d4d2b408)
   Please read the Trouble-Shooting section of the Samba HOWTO
[2018/11/09 11:08:23.956548,  0] ../lib/util/fault.c:82(fault_report)
   ==============================================================[2018/11/09
11:08:23.956634,  0] ../lib/util/fault.c:128(smb_panic_default)
   smb_panic_default: PANIC (pid 3901): internal error
[2018/11/09 11:08:23.957585,  0] ../lib/util/fault.c:261(log_stack_trace)
   BACKTRACE: 49 stack frames:
    #0 /usr/local/samba/lib/libsamba-util.so.0(log_stack_trace+0x2e)
[0x7f2472c76562]
    #1 /usr/local/samba/lib/libsamba-util.so.0(+0x202e2) [0x7f2472c762e2]
    #2 /usr/local/samba/lib/libsamba-util.so.0(log_stack_trace+0)
[0x7f2472c76534]
    #3 /usr/local/samba/lib/libsamba-util.so.0(+0x201e2) [0x7f2472c761e2]
    #4 /usr/local/samba/lib/libsamba-util.so.0(+0x201f7) [0x7f2472c761f7]
    #5 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x7f2472eea890]
    #6
/usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_element+0x5e)
[0x7f2472a2ac88]
    #7
/usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_ldb_val+0x23)
[0x7f2472a2bd6a]
    #8
/usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_attr_as_string+0x27)
[0x7f2472a2c41c]
    #9 /usr/local/samba/lib/libdcerpc-server.so.0(dns_name_compare+0x4e)
[0x7f245b39eae2]
    #10 /usr/local/samba/lib/private/libldb.so.1(ldb_qsort+0x723)
[0x7f2472a3ba6d]
    #11 /usr/local/samba/lib/libdcerpc-server.so.0(+0x65483)
[0x7f245b398483]
    #12 /usr/local/samba/lib/libdcerpc-server.so.0(+0x66844)
[0x7f245b399844]
    #13 /usr/local/samba/lib/libdcerpc-server.so.0(+0x6722c)
[0x7f245b39a22c]
    #14 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2c371)
[0x7f245b35f371]
    #15 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2cdea)
[0x7f245b35fdea]
    #16 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2e808)
[0x7f245b361808]
    #17
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
[0x7f24723d46a2]
    #18 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
[0x7f24723d4803]
    #19
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25)
[0x7f24723d4830]
    #20 /usr/local/samba/lib/libdcerpc-binding.so.0(+0x1e1f6)
[0x7f246d20c1f6]
    #21
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
[0x7f24723d46a2]
    #22 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
[0x7f24723d4803]
    #23
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25)
[0x7f24723d4830]
    #24 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xd962)
[0x7f246d425962]
    #25 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xdb9c)
[0x7f246d425b9c]
    #26
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
[0x7f24723d46a2]
    #27 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
[0x7f24723d4803]
    #28
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25)
[0x7f24723d4830]
    #29 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xcda2)
[0x7f246d424da2]
    #30
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
[0x7f24723d46a2]
    #31 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
[0x7f24723d4803]
    #32 /usr/local/samba/lib/private/libtevent.so.0(+0x8930)
[0x7f24723d4930]
    #33
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_invoke_immediate_handler+0x184)
[0x7f24723d35a5]
    #34
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_loop_immediate+0x37)
[0x7f24723d36ab]
    #35 /usr/local/samba/lib/private/libtevent.so.0(+0x11d33)
[0x7f24723ddd33]
    #36 /usr/local/samba/lib/private/libtevent.so.0(+0xe5d9)
[0x7f24723da5d9]
    #37
/usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_once+0x11e)
[0x7f24723d204f]
    #38
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_loop_wait+0x25)
[0x7f24723d23a1]
    #39 /usr/local/samba/lib/private/libtevent.so.0(+0xe67b)
[0x7f24723da67b]
    #40
/usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_wait+0x2b)
[0x7f24723d2444]
    #41 /usr/local/samba/lib/process_model/standard.so(+0x27e9)
[0x7f2464bfd7e9]
    #42
/usr/local/samba/lib/private/libservice-samba4.so(task_server_startup+0x9b)
[0x7f2471fafaf5]
    #43 /usr/local/samba/lib/private/libservice-samba4.so(+0x2afe)
[0x7f2471fadafe]
    #44
/usr/local/samba/lib/private/libservice-samba4.so(server_service_startup+0x166)
[0x7f2471fadc83]
    #45 samba: task[dcesrv](+0x5ca6) [0x557afdceaca6]
    #46 samba: task[dcesrv](main+0x3f) [0x557afdceadb8]
    #47 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)
[0x7f246fec9b97]
    #48 samba: task[dcesrv](_start+0x2a) [0x557afdce88ca]
[2018/11/09 11:08:24.463400,  0]
../source4/smbd/process_standard.c:158(standard_child_pipe_handler)
   standard_child_pipe_handler: Child 3901 (rpc) terminated with signal 6
-->

Afterwards DNS is not working and samba needs to be restarted.
I have configured some additional zones which do not result in the same error
when being accessed via the RSAT DNS tool.

Does anyone have an idea what could be the cause of the problem and how it could
be resolved ?

Thank you very much for your kind support.

Best regards
Andreas


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Andreas Oster

2018-Nov-09 10:51 UTC

head link

[Samba] Samba panic when accessing DNS domain entry with RSAT DNS tool

Hello Daniel,

thank you for the fast reply.

I am also using Windows 10. I'll setup a temporary Win7 VM to test if 
this will make any difference.

Do you know if this a known issue with RSAT on Windows 10 ?

Best regards
Andreas

Am 09.11.2018 um 11:23 schrieb Mueller:> I had this error when I did it from Windows 10.
> I usede a Windows 7 PC and everything was fine again.
>
>
> Daniel Müller
>
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: Andreas Oster via samba [mailto:samba at lists.samba.org]
> Gesendet: Freitag, 9. November 2018 11:16
> An: samba at lists.samba.org
> Betreff: [Samba] Samba panic when accessing DNS domain entry with RSAT DNS
tool
>
> Hi everybody,
>
> for some time now I have an issue with our samba/bind9-DLZ setup which
became worse lately.
> I use the RSAT DNS tool to configure DNS records. In the past it sometimes
happened, that DNS died when accessing the domain zone. This condition could
only be resolved by restarting samba on the affected DC.
> Unfortunately the situation got worse and configuration/modification of
entries in the domain zone is nearly impossible.
>
> Connecting to the DNS is working but when I do select the domain zone I get
the following in the log.samba log file:
>
> <--
>
> [2018/11/09 11:08:18.452913,  0]
>
../source4/rpc_server/dnsserver/dcerpc_dnsserver.c:1089(dnsserver_query_zone)
>     dnsserver: Invalid zone operation IsSigneddnsserver: Invalid zone
operation IsSigneddnsserver: Invalid zone operation IsSigneddnsserver:
> Invalid zone operation IsSigneddnsserver: Invalid zone operation
> IsSigneddnsserver: Invalid zone operation IsSigneddnsserver: Invalid zone
operation
IsSigned==============================================================>
[2018/11/09 11:08:23.956220,  0] ../lib/util/fault.c:80(fault_report)
>     INTERNAL ERROR: Signal 11 in pid 3901 (4.9.3-GIT-424d4d2b408)
>     Please read the Trouble-Shooting section of the Samba HOWTO
> [2018/11/09 11:08:23.956548,  0] ../lib/util/fault.c:82(fault_report)
>     ==============================================================>
[2018/11/09 11:08:23.956634,  0] ../lib/util/fault.c:128(smb_panic_default)
>     smb_panic_default: PANIC (pid 3901): internal error
> [2018/11/09 11:08:23.957585,  0] ../lib/util/fault.c:261(log_stack_trace)
>     BACKTRACE: 49 stack frames:
>      #0 /usr/local/samba/lib/libsamba-util.so.0(log_stack_trace+0x2e)
> [0x7f2472c76562]
>      #1 /usr/local/samba/lib/libsamba-util.so.0(+0x202e2) [0x7f2472c762e2]
>      #2 /usr/local/samba/lib/libsamba-util.so.0(log_stack_trace+0)
> [0x7f2472c76534]
>      #3 /usr/local/samba/lib/libsamba-util.so.0(+0x201e2) [0x7f2472c761e2]
>      #4 /usr/local/samba/lib/libsamba-util.so.0(+0x201f7) [0x7f2472c761f7]
>      #5 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x7f2472eea890]
>      #6
> /usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_element+0x5e)
> [0x7f2472a2ac88]
>      #7
> /usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_ldb_val+0x23)
> [0x7f2472a2bd6a]
>      #8
> /usr/local/samba/lib/private/libldb.so.1(ldb_msg_find_attr_as_string+0x27)
> [0x7f2472a2c41c]
>      #9 /usr/local/samba/lib/libdcerpc-server.so.0(dns_name_compare+0x4e)
> [0x7f245b39eae2]
>      #10 /usr/local/samba/lib/private/libldb.so.1(ldb_qsort+0x723)
> [0x7f2472a3ba6d]
>      #11 /usr/local/samba/lib/libdcerpc-server.so.0(+0x65483)
> [0x7f245b398483]
>      #12 /usr/local/samba/lib/libdcerpc-server.so.0(+0x66844)
> [0x7f245b399844]
>      #13 /usr/local/samba/lib/libdcerpc-server.so.0(+0x6722c)
> [0x7f245b39a22c]
>      #14 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2c371)
> [0x7f245b35f371]
>      #15 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2cdea)
> [0x7f245b35fdea]
>      #16 /usr/local/samba/lib/libdcerpc-server.so.0(+0x2e808)
> [0x7f245b361808]
>      #17
>
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
> [0x7f24723d46a2]
>      #18 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
> [0x7f24723d4803]
>      #19
> /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25)
> [0x7f24723d4830]
>      #20 /usr/local/samba/lib/libdcerpc-binding.so.0(+0x1e1f6)
> [0x7f246d20c1f6]
>      #21
>
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
> [0x7f24723d46a2]
>      #22 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
> [0x7f24723d4803]
>      #23
> /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25)
> [0x7f24723d4830]
>      #24 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xd962)
> [0x7f246d425962]
>      #25 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xdb9c)
> [0x7f246d425b9c]
>      #26
>
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
> [0x7f24723d46a2]
>      #27 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
> [0x7f24723d4803]
>      #28
> /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done+0x25)
> [0x7f24723d4830]
>      #29 /usr/local/samba/lib/private/libsamba-sockets-samba4.so(+0xcda2)
> [0x7f246d424da2]
>      #30
>
/usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a)
> [0x7f24723d46a2]
>      #31 /usr/local/samba/lib/private/libtevent.so.0(+0x8803)
> [0x7f24723d4803]
>      #32 /usr/local/samba/lib/private/libtevent.so.0(+0x8930)
> [0x7f24723d4930]
>      #33
>
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_invoke_immediate_handler+0x184)
> [0x7f24723d35a5]
>      #34
>
/usr/local/samba/lib/private/libtevent.so.0(tevent_common_loop_immediate+0x37)
> [0x7f24723d36ab]
>      #35 /usr/local/samba/lib/private/libtevent.so.0(+0x11d33)
> [0x7f24723ddd33]
>      #36 /usr/local/samba/lib/private/libtevent.so.0(+0xe5d9)
> [0x7f24723da5d9]
>      #37
> /usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_once+0x11e)
> [0x7f24723d204f]
>      #38
> /usr/local/samba/lib/private/libtevent.so.0(tevent_common_loop_wait+0x25)
> [0x7f24723d23a1]
>      #39 /usr/local/samba/lib/private/libtevent.so.0(+0xe67b)
> [0x7f24723da67b]
>      #40
> /usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_wait+0x2b)
> [0x7f24723d2444]
>      #41 /usr/local/samba/lib/process_model/standard.so(+0x27e9)
> [0x7f2464bfd7e9]
>      #42
> /usr/local/samba/lib/private/libservice-samba4.so(task_server_startup+0x9b)
> [0x7f2471fafaf5]
>      #43 /usr/local/samba/lib/private/libservice-samba4.so(+0x2afe)
> [0x7f2471fadafe]
>      #44
>
/usr/local/samba/lib/private/libservice-samba4.so(server_service_startup+0x166)
> [0x7f2471fadc83]
>      #45 samba: task[dcesrv](+0x5ca6) [0x557afdceaca6]
>      #46 samba: task[dcesrv](main+0x3f) [0x557afdceadb8]
>      #47 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)
> [0x7f246fec9b97]
>      #48 samba: task[dcesrv](_start+0x2a) [0x557afdce88ca]
> [2018/11/09 11:08:24.463400,  0]
> ../source4/smbd/process_standard.c:158(standard_child_pipe_handler)
>     standard_child_pipe_handler: Child 3901 (rpc) terminated with signal 6
> -->
>
> Afterwards DNS is not working and samba needs to be restarted.
> I have configured some additional zones which do not result in the same
error when being accessed via the RSAT DNS tool.
>
> Does anyone have an idea what could be the cause of the problem and how it
could be resolved ?
>
> Thank you very much for your kind support.
>
> Best regards
> Andreas
>
>
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