On Fri, 03 Jan 2014, Andrew Holway wrote:
To generate the winbind logs on the server, can you do 'smbcontrol winbindd
debug 100', then request the trusted user. The winbind logs would be at
/var/log/samba/log.w*


I truncated all of the files in /var/log/samba and then make a single
login attempt. These are the files that were non zero after the event.

log.smbd.epmd - https://gist.github.com/anonymous/663be9204d24bf3e915c
log.wb-PRATTLE - https://gist.github.com/anonymous/069c9931b1c66a2da85e
I can see multiples of:
[2014/01/03 07:48:08.789374, 10, pid=2662, effective(0, 0), real(0, 0), 
class=winbind]
../source3/winbindd/winbindd_cm.c:806(cm_prepare_connection)
  cm_prepare_connection: connecting to DC WIN-5UGLHAK7RIN for domain PRATTLE
[2014/01/03 07:48:08.789437,  1, pid=2662, effective(0, 0), real(0, 0), 
class=winbind]
../source3/winbindd/winbindd_cm.c:839(cm_prepare_connection)
  cli_negprot failed: NT_STATUS_INVALID_PARAMETER_MIX

This means some internal mishandling in winbindd,
NT_STATUS_INVALID_PARAMETER_MIX can only appear at this path if the
connection (which has just been created, few calls before cli_negprot)
has outstanding outstanding calls in outgoing queue at the point when cli_negprot is attempted. As result, cli_negprot can't start until they
are finished.

log.wb-WIBBLE - https://gist.github.com/anonymous/c60754ec956df30f2c60
log.winbindd - https://gist.github.com/anonymous/25995d07c20ef5f3926a
log.winbindd-dc-connect - https://gist.github.com/anonymous/9b6a1b736f1266ddc37f

At this point I need to know exact version of the samba package (samba4
if this is RHEL 6.x) to continue investigations with the exact source
code at hand.

--
/ Alexander Bokovoy

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