SMB trans2 set posix acl failure to very current Samba 3

[Steve French]

Getting a failure (probably Samba getting invalid argument in call to 
acl_clear_perms) setting posix acls to current Samba 3 from svn on very 
current Linux cifs client test code (from bk tree).  Operation:

    setfacl -m u:ftp:r /mnt/tmp/patch-2.6.10-rc2

as owner of file.  Seems to fail on every file I try.  smbd level 10 log 
follows:

[2004/11/29 22:57:20, 3] smbd/trans2.c:call_trans2setfilepathinfo(3302)
  call_trans2setfilepathinfo(6) tmp/patch-2.6.10-rc2 (fnum -1) 
info_level=516 totdata=56
[2004/11/29 22:57:20, 8] smbd/dosmode.c:dos_mode(283)
  dos_mode: tmp/patch-2.6.10-rc2
[2004/11/29 22:57:20, 8] smbd/dosmode.c:dos_mode_from_sbuf(151)
  dos_mode_from_sbuf returning
[2004/11/29 22:57:20, 8] smbd/dosmode.c:dos_mode(315)
  dos_mode returning
[2004/11/29 22:57:20, 1] smbd/posix_acls.c:unix_ex_wire_to_permset(3404)
  unix_ex_wire_to_permset  errno 22 Invalid argument on 
VFS_SYS_ACL_CLEAR_PERMS
[2004/11/29 22:57:20, 0] smbd/posix_acls.c:create_posix_acl_from_wire(3499)
  create_posix_acl_from_wire: invalid permset 6 on entry 0.
[2004/11/29 22:57:20, 3] smbd/error.c:error_packet(105)
  error string = Invalid argument
[2004/11/29 22:57:20, 3] smbd/error.c:error_packet(129)
  error packet at smbd/trans2.c(3853) cmd=50 (SMBtrans2) 
NT_STATUS_INVALID_HANDLE

The error mapping is probably wrong on the server side, but any idea how 
to proceed.