[Samba] INTERNAL ERROR: Signal 11 in pid 8928 (3.0.23c)

[Jeremy Allison]

On Sat, Sep 16, 2006 at 02:25:47PM -0700, Nolan Garrett wrote:
> Hello!
> 
> It seems my struggle with Samba isn't quite over.  My latest problem is
> exactly what you see above, followed by an attempt to core dump.  This
> occurs upon authentication to the system.  My system is part of a W2K3
> domain.  I looked at the Samba HOWTO, but apparently I have a system
> (FC5), that doesn't allow core dumps when the PID changes, since no core
> dumps are being created.  Also, smbstatus doesn't give me a PID, so I am
> having a hard time running gdb to further understand this issue.  Here
> is the log output:
> 
> [2006/09/16 14:19:11, 0] lib/fault.c:fault_report(41)
>   ===============================================================
> [2006/09/16 14:19:11, 0] lib/fault.c:fault_report(42)
>   INTERNAL ERROR: Signal 11 in pid 8928 (3.0.23c)
>   Please read the Trouble-Shooting section of the Samba3-HOWTO
> [2006/09/16 14:19:11, 0] lib/fault.c:fault_report(44)
> 
>   From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
> [2006/09/16 14:19:11, 0] lib/fault.c:fault_report(45)
>   ===============================================================
> [2006/09/16 14:19:11, 0] lib/util.c:smb_panic(1592)
>   PANIC (pid 8928): internal error
> [2006/09/16 14:19:11, 0] lib/util.c:log_stack_trace(1699)
>   BACKTRACE: 16 stack frames:
>    #0 smbd(log_stack_trace+0x2d) [0x9b39ed]
>    #1 smbd(smb_panic+0x5d) [0x9b3b1d]
>    #2 smbd [0x99f49a]
>    #3 [0x110420]
>    #4 smbd(create_token_from_username+0x7c4) [0x9fbd54]
>    #5 smbd(create_local_token+0x91) [0x9fcd61]
>    #6 smbd [0x9feb55]
>    #7 smbd [0x88a5b8]
>    #8 smbd(ntlmssp_update+0x242) [0x888aa2]
>    #9 smbd(auth_ntlmssp_update+0x4b) [0x9fe7eb]
>    #10 smbd(reply_sesssetup_and_X+0x1a59) [0x8194a9]
>    #11 smbd [0x8470d0]
>    #12 smbd(smbd_process+0x7ab) [0x84820b]
>    #13 smbd(main+0xbd0) [0xa62110]
>    #14 /lib/libc.so.6(__libc_start_main+0xdc) [0xbb5f2c]
>    #15 smbd [0x7d27b1]
> [2006/09/16 14:19:11, 0] lib/fault.c:dump_core(173)
>   dumping core in /var/log/samba/cores/smbd
> 
> I'm running:
> samba-3.0.23c-4
> samba-client-3.0.23c-4
> samba-common-3.0.23c-4
> 
> Any ideas on this?

For a core dump, add the lines :

panic action = /bin/sleep 999999

to the [global] section of your smb.conf, and
reproduce the problem. The smbd will hang waiting
for the sleep to finish, allowing you to attach
to the waiting smbd process with gdb. You can then
print out a backtrace with symbols which is a much
more helpful review of the problem.

Thanks,

	Jeremy.