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Reset TreeId to zero on SMB2 TREE_CONNECT

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commit 806a28efe9b78ffae5e2757e1ee924b8e50c08ab upstream.

Currently the cifs module breaks the CIFS specs on reconnect as
described in http://msdn.microsoft.com/en-us/library/cc246529.aspx:

"TreeId (4 bytes): Uniquely identifies the tree connect for the
command. This MUST be 0 for the SMB2 TREE_CONNECT Request."

Signed-off-by: Jan-Marek Glogowski <glogow@fbihome.de>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Tested-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jan-Marek Glogowski 2017-02-20 12:25:58 +01:00 committed by Greg Kroah-Hartman
parent 57e1e90dda
commit 8446cb1adf
1 changed files with 4 additions and 0 deletions
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4
fs/cifs/smb2pdu.c
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@ -1104,6 +1104,10 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
return -EINVAL;
}
/* SMB2 TREE_CONNECT request must be called with TreeId == 0 */
if (tcon)
tcon->tid = 0;
rc = small_smb2_init(SMB2_TREE_CONNECT, tcon, (void **) &req);
if (rc) {
kfree(unc_path);