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Re: Debugging samba

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> Kevin DAGNEAUX wrote:
>
>> I'm using samba for lot of years too, i'm having trouble only with the
>> last version from debian repo.
>>
> Which debian version and which samba version - perhaps I missed this.
>
>> When crashing, samba don't need to be restarted and windows client just
>> see a small freeze.
>>
>> Log file talk about a lock problem on a directory that have never
>> existed, in log file i don't have any info about which IP trying to
>> access to this directory, that why a i try a debug to see if i've more
>> info about thoses access.
>>
> Then enable logging per machine ID.
>
>> Maybe you don't have any problem because samba panic script can't send
>> you a mail.
> I definitely do not have any problem, but can you share the crash report -
> perhaps I am wrong
>
> I have installed
>   cat /etc/debian_version
> 9.8
> $ dpkg -l | grep samba
> ii  python-samba                   2:4.5.16+dfsg-1                    amd64
> Python bindings for Samba
> ii  samba                          2:4.5.16+dfsg-1                    amd64
> SMB/CIFS file, print, and login server for Unix
> ii  samba-common                   2:4.5.16+dfsg-1                    all
> common files used by both the Samba server and client
> ii  samba-common-bin               2:4.5.16+dfsg-1                    amd64
> Samba common files used by both the server and the client
> ii  samba-dsdb-modules             2:4.5.16+dfsg-1                    amd64
> Samba Directory Services Database
> ii  samba-libs:amd64               2:4.5.16+dfsg-1                    amd64
> Samba core libraries
> ii  samba-vfs-modules              2:4.5.16+dfsg-1                    amd64
> Samba Virtual FileSystem plugins
>
>
>
$ cat /etc/debian_version
9.8

$ dpkg -l | grep samba
ii  python-samba 2:4.5.16+dfsg-1+deb9u1             amd64        Python 
bindings for Samba
ii  samba 2:4.5.16+dfsg-1+deb9u1             amd64        SMB/CIFS file, 
print, and login server for Unix
ii  samba-common 2:4.5.16+dfsg-1+deb9u1             all          common 
files used by both the Samba server and client
ii  samba-common-bin 2:4.5.16+dfsg-1+deb9u1             amd64        
Samba common files used by both the server and the client
ii  samba-dsdb-modules 2:4.5.16+dfsg-1+deb9u1             amd64        
Samba Directory Services Database
ii  samba-libs:amd64 2:4.5.16+dfsg-1+deb9u1             amd64        
Samba core libraries
ii  samba-vfs-modules 2:4.5.16+dfsg-1+deb9u1             amd64        
Samba Virtual FileSystem plugins

Per machin log file is enabled (using the default setting "log file = 
/var/log/samba/log.%m"), so log file that contain error is /var/log/log. 
(machin seems not identified by samba).

Here is the content of log file :


[2019/04/12 10:31:57.105329,  0] 
../source3/locking/posix.c:455(decrement_lock_ref_count)
   PANIC: assert failed at ../source3/locking/posix.c(455): 
lock_ref_count >= 0
[2019/04/12 10:31:57.105373,  0] ../source3/lib/util.c:791(smb_panic_s3)
   PANIC (pid 2206): assert failed: lock_ref_count >= 0
[2019/04/12 10:31:57.106329,  0] ../source3/lib/util.c:902(log_stack_trace)
   BACKTRACE: 29 stack frames:
    #0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1c) 
[0x7f9e6a6a6c0c]
    #1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) 
[0x7f9e6a6a6ce0]
    #2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) 
[0x7f9e6cbc319f]
    #3 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0x194740) 
[0x7f9e6c7f8740]
    #4 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0x19493f) 
[0x7f9e6c7f893f]
    #5 
/usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(release_posix_lock_posix_flavour+0x1fc) 
[0x7f9e6c7faadc]
    #6 
/usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(brl_unlock+0x566) 
[0x7f9e6c7f6bb6]
    #7 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(do_unlock+0xce) 
[0x7f9e6c7f29ce]
    #8 
/usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(smbd_do_setfilepathinfo+0x1b60) 
[0x7f9e6c75b2a0]
    #9 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0xf8dbb) 
[0x7f9e6c75cdbb]
    #10 
/usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(reply_trans2+0x645) 
[0x7f9e6c75f695]
    #11 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0x123086) 
[0x7f9e6c787086]
    #12 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0x1254ba) 
[0x7f9e6c7894ba]
    #13 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0x1264ac) 
[0x7f9e6c78a4ac]
    #14 /usr/lib/x86_64-linux-gnu/libtevent.so.0(+0xaea3) [0x7f9e692e7ea3]
    #15 /usr/lib/x86_64-linux-gnu/libtevent.so.0(+0x9277) [0x7f9e692e6277]
    #16 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x9d) 
[0x7f9e692e204d]
    #17 
/usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x1b) 
[0x7f9e692e227b]
    #18 /usr/lib/x86_64-linux-gnu/libtevent.so.0(+0x9217) [0x7f9e692e6217]
    #19 
/usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(smbd_process+0x6c9) 
[0x7f9e6c78b7d9]
    #20 /usr/sbin/smbd(+0xa7b4) [0x5583043b67b4]
    #21 /usr/lib/x86_64-linux-gnu/libtevent.so.0(+0xaea3) [0x7f9e692e7ea3]
    #22 /usr/lib/x86_64-linux-gnu/libtevent.so.0(+0x9277) [0x7f9e692e6277]
    #23 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x9d) 
[0x7f9e692e204d]
    #24 
/usr/lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x1b) 
[0x7f9e692e227b]
    #25 /usr/lib/x86_64-linux-gnu/libtevent.so.0(+0x9217) [0x7f9e692e6217]
    #26 /usr/sbin/smbd(main+0x1784) [0x5583043b34f4]
    #27 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) 
[0x7f9e68f5e2e1]
    #28 /usr/sbin/smbd(_start+0x2a) [0x5583043b35fa]
[2019/04/12 10:31:57.106501,  0] ../source3/lib/util.c:803(smb_panic_s3)
   smb_panic(): calling panic action [/usr/share/samba/panic-action 2206]
ptrace: Opération non permise.
/home/shares/Partages/Nextcloud/2206: Aucun fichier ou dossier de ce type.
/etc/samba/gdbcommands:1: Error in sourced command file:
No stack.
[2019/04/12 10:31:57.246124,  0] ../source3/lib/util.c:811(smb_panic_s3)
   smb_panic(): action returned status 0
[2019/04/12 10:31:57.246236,  0] ../source3/lib/dumpcore.c:303(dump_core)
   dumping core in /var/log/samba/cores/smbd

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Thread

Debugging samba Kevin DAGNEAUX <kevin.dagneaux@fiitelcom.fr> - 2019-04-11 15:50 +0200
  Re: Debugging samba Roberto C. Sánchez <roberto@debian.org> - 2019-04-11 16:30 +0200
    Re: Debugging samba Kevin DAGNEAUX <kevin.dagneaux@fiitelcom.fr> - 2019-04-11 17:00 +0200
      Re: Debugging samba Roberto C. Sánchez <roberto@debian.org> - 2019-04-11 17:00 +0200
      Re: Debugging samba deloptes <deloptes@gmail.com> - 2019-04-11 21:00 +0200
        Re: Debugging samba Kevin DAGNEAUX <kevin.dagneaux@fiitelcom.fr> - 2019-04-12 09:30 +0200
          Re: Debugging samba deloptes <deloptes@gmail.com> - 2019-04-12 10:30 +0200
            Re: Debugging samba Kevin DAGNEAUX <kevin.dagneaux@fiitelcom.fr> - 2019-04-12 10:50 +0200
              Re: Debugging samba deloptes <deloptes@gmail.com> - 2019-04-12 12:20 +0200
                Re: Debugging samba deloptes <deloptes@gmail.com> - 2019-04-12 21:20 +0200

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