Date:        11/23/97 12:18:09 PM
From:        Luke Kenneth Casson Leighton <lkcl@SWITCHBOARD.NET>
Subject:     Re: NT blue screen
To:          ("<CIFS@DISCUSS.MICROSOFT.COM>"@LOCAL)

On Thu, 20 Nov 1997, Christian Starkjohann wrote:

> Hi,
> while developing a CIFS client, I have found a message sequence that crashes
> an NT 4.0 (service pack 2) machine. Although I was looking hard, I have not
> found what might be wrong with my requests. The dialog is as follows (on TCP
> port 139):

> SMB_COM_TRANSACTION2/TRANS2_QUERY_FS_INFORMATION:
>  <- Tx: 00 00 00 48: ff 53 4d 42 32 00 00 00 00 18 03 00 00 00 00 00 00 00
> 00 00 00 00 00 00 00 08 00 00 00 08 05 00 0f 02 00 00 00 40 00 00 08 00 00 00
> 00 00 00 00 00 00 00 02 00 44 00 00 00 48 00 01 00 03 00 07 00 00 00 00 01
> 00 00 00

> This last message has crashed the NT box (blue screen). The variations I

> Does anyone have an idea what's wrong? BTW, the same sequence of messages


NT and Win95 CIFS-servers support "SMB_NT_CREATE_AND_X".  [Samba does not, by
the way...]


if NT_CREATE_AND_X is not supported / used, the Win95 and NT CIFS clients
and servers default to alternative mechanisms.  Win95 and NT clients,
will use, if the target CIFS server supports them:

SMB_CREATE_AND_X; SMB_CREATE; SMB_CREATE_NEW for file creation

SMB_COM_QUERY_INFORMATION; SMB_COM_SET_INFORMATION;
  SMB_COM_QUERY_INFORMATION; SMB_COM_SET_INFORMATION

SMB_COM_TRANSACT2/TRANS2_QUERY_FS_INFO;
SMB_COM_TRANSACT2/TRANS2_SET_FS_INFO;


these alternatives are _not_ the default for Windows (NT, Win95) ->
Windows (NT, Win95) CIFS communication.

luke


<a href="mailto:lkcl@switchboard.net"  > Luke Kenneth Casson Leighton  </a>
<a href="http://mailhost.cb1.com/~lkcl"> Samba Consultancy and Support </a>

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