[Samba] winbindd PANIC: smb_xmalloc: malloc fail

[Doug VanLeuven]

Windows 2003 native mode
AIX 5.1 gcc 2.9
MIT kerberos 1.3.4 pre-compiled binary for AIX
openldap 2.1.30
samba 3.0.5

The nmbd, smbd daemons appear to be running without issue.

winbindd will abort every time with:

smb_xmalloc() failed to allocate 2534319874 bytes
PANIC: smb_xmalloc: malloc fail.

===============================================================
INTERNAL ERROR: Signal 6 in pid 32470 (3.0.5)
Please read the appendix Bugs of the Samba HOWTO collection
===============================================================
PANIC: internal error


Are there any know issues with the gcc 2.9 compiler?  Or perhaps I'm 
missing a flag?


I tracked it down to this segment of code in libsmb/cliconnect.c

static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB 
session_key)
{
        cli->user_session_key = data_blob(session_key.data, 
session_key.length);
}

I can verify the value of session_key.length is 16 prior to the call to 
cli_set_session_key,
but in data_blob the value becomes 2534319874.

If I add a DEBUG statement, the value of 16 is passed correctly to data_blob
and winbindd runs without error.

static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB 
session_key)
{
      DEBUG(10,("cli_set_session_key: Mark 1 
length=%ld\n",session_key.length));
        cli->user_session_key = data_blob(session_key.data, 
session_key.length);
}

Is there some proper way to solve this besides adding DEBUG statements 
to any wrappers?
The gcc version version 2.9 is the most current supplied with the Linux 
affinity toolkit.