net vampire panic - was RE: Samba4 ADS BDC howto/help/status, please?
Brian.Dickson at concertia.com
Fri Jan 22 12:00:02 MST 2010
Okay, here it is, as an attachment (original *nix text output via "tee" off of the gdb output).
Let me know if that looks okay.
From: Matthias Dieter Wallnöfer [mailto:mdw at samba.org]
Sent: January-22-10 1:45 PM
To: Brian Dickson
Cc: samba-technical at lists.samba.org
Subject: Re: net vampire panic - was RE: Samba4 ADS BDC howto/help/status, please?
Brian Dickson wrote:
> Okay, I tried that, and here's what I got:
> net -U Administrator vampire CONCERTIA
> Password for [CONCERTIA\Administrator]:
> talloc: double free error - first free may be at librpc/rpc/dcerpc_connect.c:809
> Bad talloc magic value - double free
> PANIC: Bad talloc magic value - double free
> BACKTRACE: 36 stack frames:
> #0 net(call_backtrace+0x2b) [0x86e2ce7]
> #1 net(smb_panic+0x226) [0x86e2fc1]
> #2 net [0x86fbc2b]
> #3 net [0x86fbcd4]
> #4 net [0x86fbde2]
> uname -a output:
> Linux mail.concertia.com 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:05:01 UTC 2009 x86_64 GNU/Linux
> Samba4 version info: /usr/local/src/samba-4.0.0alpha11/source4
> Let me know if there's any other info you need (config files, for instance) to help figure out what is at fault...
This form of a backtrace doesn't help us that much. Therefore try to
first do a full rebuild using "make clean" (or on GIT also "git-clean -d
-f -x ." directly in the repo directory), "./autogen.sh",
"./configure.developer" (important: to get the debug symbols on) and
"make". Instead of running the net command alone, launch it under gdb:
"gdb --args net -U Administrator%<password> vampire CONCERTIA". In the
gdb console type the command "r" and when you get the SIGSEGV message,
"bt full" (always terminate with enter). Try to copy the long backtrace
in a textfile and post it here. Afterwards you can close gdb with "q".
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