[Samba] Samba 3.4.5 on ubuntu 8.04 64 bit - Core dumps

[Jeremy Allison]

On Mon, Jan 25, 2010 at 03:25:46PM +0100, Martin Hochreiter wrote:
> I recently installed Samba 3.4.5 on Ubuntu 8.04 64 bit and
> had to downgrad again because of massive core panics:
>
> I can't really tell you what caused that (maybe while printing via  
> samba-cups) - can
> somebody give me a hint or tell me what information you need to analyze  
> that please?
>
> [2010/01/25 13:46:52,  0] lib/fault.c:46(fault_report)
>   ===============================================================
> [2010/01/25 13:46:52,  0] lib/fault.c:47(fault_report)
>   INTERNAL ERROR: Signal 11 in pid 7553 (3.4.5)
>   Please read the Trouble-Shooting section of the Samba3-HOWTO
> [2010/01/25 13:46:52,  0] lib/fault.c:49(fault_report)
>
>   From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
> [2010/01/25 13:46:52,  0] lib/fault.c:50(fault_report)
>   ===============================================================
> [2010/01/25 13:46:52,  0] lib/util.c:1480(smb_panic)
>   PANIC (pid 7553): internal error
> [2010/01/25 13:46:52,  0] lib/util.c:1584(log_stack_trace)
>   BACKTRACE: 25 stack frames:
>    #0 /opt/samba345/sbin/smbd(log_stack_trace+0x1a) [0x6bc42b]
>    #1 /opt/samba345/sbin/smbd(smb_panic+0x55) [0x6bc52a]
>    #2 /opt/samba345/sbin/smbd [0x6ad1ae]
>    #3 /lib/libpthread.so.0 [0x7fa381cb77d0]
>    #4 /etc/samba/libtalloc.so.1 [0x7fa380da9761]
>    #5 /etc/samba/libtalloc.so.1(talloc_free+0x1cc) [0x7fa380dab92e]
>    #6 /opt/samba345/sbin/smbd [0x6249ca]
>    #7 /opt/samba345/sbin/smbd(api_pipe_request+0x3ac) [0x656ef5]
>    #8 /opt/samba345/sbin/smbd [0x650b46]
>    #9 /opt/samba345/sbin/smbd(np_write_send+0x912) [0x651a13]
>    #10 /opt/samba345/sbin/smbd [0x4a7456]
>    #11 /opt/samba345/sbin/smbd [0x4a79d9]
>    #12 /opt/samba345/sbin/smbd(reply_trans+0x6b7) [0x4a85af]
>    #13 /opt/samba345/sbin/smbd [0x4fee33]
>    #14 /opt/samba345/sbin/smbd [0x5012e8]
>    #15 /opt/samba345/sbin/smbd [0x501a6c]
>    #16 /opt/samba345/sbin/smbd(run_events+0x131) [0x6cb350]
>    #17 /opt/samba345/sbin/smbd(smbd_process+0x790) [0x500cb7]
>    #18 /opt/samba345/sbin/smbd [0x947e15]
>    #19 /opt/samba345/sbin/smbd(run_events+0x131) [0x6cb350]
>    #20 /opt/samba345/sbin/smbd [0x6cb5b0]
>    #21 /opt/samba345/sbin/smbd(_tevent_loop_once+0x84) [0x6cb929]
>    #22 /opt/samba345/sbin/smbd(main+0xf17) [0x947b99]
>    #23 /lib/libc.so.6(__libc_start_main+0xf4) [0x7fa3806481c4]
>    #24 /opt/samba345/sbin/smbd [0x48e629]
> [2010/01/25 13:46:52,  0] lib/fault.c:326(dump_core)
>   dumping core in /var/log/samba/cores/smbd

Can you install the debug symbols, and try and
reproduce the problem please ? Open a bug at bugzilla.samba.org
and add the line:

panic action = "/bin/sleep 99999"

to the [global] section of your smb.conf. Once the crash
re-occurs, attach to the parent process of the sleep using
gdb, and then type "bt" to get a full backtrace with symbols.

Attach this to the bug report please.

Thanks !

Jeremy.