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authorJan-Marek Glogowski <glogow@fbihome.de>2017-02-20 12:25:58 +0100
committerSteve French <smfrench@gmail.com>2017-04-07 08:04:41 -0500
commit806a28efe9b78ffae5e2757e1ee924b8e50c08ab (patch)
tree67da54c377685f760acdcfbc67a0de8cd24de873
parent4fa8e504e5c0d7db9280ac96a4ac92192f1041f5 (diff)
Reset TreeId to zero on SMB2 TREE_CONNECT
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> CC: Stable <stable@vger.kernel.org>
-rw-r--r--fs/cifs/smb2pdu.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 7446496850a3..66fa1b941cdf 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1185,6 +1185,10 @@ 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);