[Samba] HELP: Samba server crashing on me

Timothy Normand Miller theosib at gmail.com
Sun Sep 6 21:21:06 MDT 2009 

On Sun, Sep 6, 2009 at 11:17 PM, John H Terpstra - Samba
Team<jht at samba.org> wrote:
> On 09/06/2009 10:12 PM, Timothy Normand Miller wrote:
>> On Sun, Sep 6, 2009 at 10:54 PM, Jobst Schmalenbach<jobst at barrett.com.au> wrote:
>>>
>>> This is ONLY a guess:
>>>
>>>  * signal 11 means invalid memory reference, so I would check your RAM
>>>   and even your harddisks, it could be a page fault.
>>>   (find some other ram, put them in and run it for a while).
>>
>> This problem is new and 100% reproducable.  I've tried rebooting,
>> which should fix any intermittent problem.  Also the RAM is from
>> Crucial, and I'm not doing any overclocking of any kind.  Everything
>> else is 100% stable, except for samba, which crashes.
>>
>> Turns out that it doesn't crash until a client tries to connect.
>>
>>>
>>>  * may, just maybe your problems from earlier "Unable to connect to CUPS server"
>>>   have had too many pointer allocations/references that the next one in the
>>>   chain crashed the server, fix this and check again.
>>
>> That's the first thing I fixed.  Didn't help.  Any other ideas?
>>
>> Apparently, the crash is here:
>>
>>>> #6  dns_register_smbd_reply (dns_state=0x0, lfds=0x7ffff4963ed0,
>>>> timeout=0x7ffff4964060) at smbd/dnsregister.c:171
>>
>> I'm going to pull the source and see what's there.
>
> Did you by any chance update glibc before this problem started to occur?

A few weeks ago.  I'm pretty sure I've rebooted once since then, so I
don't think that's the problem.

>
> Samba is a user-space application.  If your whole system crashed this
> suggests a symptomatic problem with either the hardware (memory or
> motherboard) or else corrupt binaries (either kernel or system libraries).

No.  Only smbd is crashing.  Everything else is fine.

>
> - John T.
>
>>>
>>> this is what I would do first.
>>> Jobst
>>>
>>>
>>>
>>> On Sun, Sep 06, 2009 at 10:44:01PM -0400, Timothy Normand Miller (theosib at gmail.com) wrote:
>>>> For no reason that I can discover, my smb server has started crashing
>>>> on me.  I'm really hoping someone help me out with this.  This is the
>>>> relevant portion of the log:
>>>>
>>>> [2009/09/06 22:24:44,  0] smbd/server.c:main(1274)
>>>>   smbd version 3.3.7 started.
>>>>   Copyright Andrew Tridgell and the Samba Team 1992-2009
>>>> [2009/09/06 22:24:44,  0] printing/print_cups.c:cups_connect(103)
>>>>   Unable to connect to CUPS server /var/run/cups/cups.sock:631 - No
>>>> such file or directory
>>>> [2009/09/06 22:24:44,  0] printing/print_cups.c:cups_connect(103)
>>>>   Unable to connect to CUPS server /var/run/cups/cups.sock:631 - No
>>>> such file or directory
>>>> [2009/09/06 22:26:09,  0] smbd/server.c:main(1274)
>>>>   smbd version 3.3.7 started.
>>>>   Copyright Andrew Tridgell and the Samba Team 1992-2009
>>>> [2009/09/06 22:26:09,  0] printing/print_cups.c:cups_connect(103)
>>>>   Unable to connect to CUPS server /var/run/cups/cups.sock:631 - No
>>>> such file or directory
>>>> [2009/09/06 22:26:09,  0] printing/print_cups.c:cups_connect(103)
>>>>   Unable to connect to CUPS server /var/run/cups/cups.sock:631 - No
>>>> such file or directory
>>>> [2009/09/06 22:26:43,  0] lib/fault.c:fault_report(40)
>>>>   ===============================================================
>>>> [2009/09/06 22:26:43,  0] lib/fault.c:fault_report(41)
>>>>   INTERNAL ERROR: Signal 11 in pid 16066 (3.3.7)
>>>>   Please read the Trouble-Shooting section of the Samba3-HOWTO
>>>> [2009/09/06 22:26:43,  0] lib/fault.c:fault_report(43)
>>>>
>>>>   From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
>>>> [2009/09/06 22:26:43,  0] lib/fault.c:fault_report(44)
>>>>   ===============================================================
>>>> [2009/09/06 22:26:43,  0] lib/util.c:smb_panic(1673)
>>>>   PANIC (pid 16066): internal error
>>>> [2009/09/06 22:26:43,  0] lib/util.c:log_stack_trace(1777)
>>>>   BACKTRACE: 8 stack frames:
>>>>    #0 /usr/sbin/smbd(log_stack_trace+0x1c) [0x7f4fdfff6b10]
>>>>    #1 /usr/sbin/smbd(smb_panic+0x5b) [0x7f4fdfff6c1d]
>>>>    #2 /usr/sbin/smbd [0x7f4fdffe3e71]
>>>>    #3 /lib/libpthread.so.0 [0x7f4fde09bef0]
>>>>    #4 /usr/sbin/smbd(dns_register_smbd_reply+0x1c) [0x7f4fdfe59e3b]
>>>>    #5 /usr/sbin/smbd(main+0x16e8) [0x7f4fe01f05cc]
>>>>    #6 /lib/libc.so.6(__libc_start_main+0xe6) [0x7f4fdca49a26]
>>>>    #7 /usr/sbin/smbd [0x7f4fdfde1339]
>>>> [2009/09/06 22:26:43,  0] lib/fault.c:dump_core(231)
>>>>   dumping core in /var/log/samba/cores/smbd
>>>>
>>>> I don't get much out of gdb:
>>>>
>>>> #0  0x00007f4fdca5d645 in raise (sig=<value optimized out>) at
>>>> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
>>>> 64      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
>>>>         in ../nptl/sysdeps/unix/sysv/linux/raise.c
>>>> (gdb) where
>>>> #0  0x00007f4fdca5d645 in raise (sig=<value optimized out>) at
>>>> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
>>>> #1  0x00007f4fdca5eb63 in abort () at abort.c:88
>>>> #2  0x00007f4fdffe38db in dump_core () at lib/fault.c:242
>>>> #3  0x00007f4fdfff6d3b in smb_panic (why=<value optimized out>) at
>>>> lib/util.c:1689
>>>> #4  0x00007f4fdffe3e71 in sig_fault (sig=11) at lib/fault.c:46
>>>> #5  <signal handler called>
>>>> #6  dns_register_smbd_reply (dns_state=0x0, lfds=0x7ffff4963ed0,
>>>> timeout=0x7ffff4964060) at smbd/dnsregister.c:171
>>>> #7  0x00007f4fe01f05cc in main (argc=<value optimized out>,
>>>> argv=<value optimized out>) at smbd/server.c:689
>>>>
>>>>
>>>> Other things:
>>>>
>>>> - I did try stopping and restarting the service
>>>> - I ran testparm, and it says my config is fine
>>>>
>>>> --
>>>> Timothy Normand Miller
>>>> http://www.cse.ohio-state.edu/~millerti
>>>> Open Graphics Project
>>>> --
>>>> To unsubscribe from this list go to the following URL and read the
>>>> instructions:  https://lists.samba.org/mailman/options/samba
>>>
>>> --
>>> Do Lipton Tea employees take coffee breaks?
>>>
>>>  | |0| |   Jobst Schmalenbach, jobst at barrett.com.au, General Manager
>>>  | | |0|   Barrett Consulting Group P/L & The Meditation Room P/L
>>>  |0|0|0|   +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia
>>> --
>>> To unsubscribe from this list go to the following URL and read the
>>> instructions:  https://lists.samba.org/mailman/options/samba
>>>
>>
>>
>>
>
>
> --
> John H Terpstra
>
> "If at first you don't succeed, don't go sky-diving!"
>



-- 
Timothy Normand Miller
http://www.cse.ohio-state.edu/~millerti
Open Graphics Project

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