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SMB3: Warn user if trying to sign connection that authenticated as guest

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commit c721c38957fb19982416f6be71aae7b30630d83b upstream.

It can be confusing if user ends up authenticated as guest but they
requested signing (server will return error validating signed packets)
so add log message for this.

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Steve French 2017-09-19 18:40:03 -05:00 committed by Greg Kroah-Hartman
parent f2d395b7bd
commit df1be20664
1 changed files with 2 additions and 0 deletions
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2
fs/cifs/smb2pdu.c
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@ -1010,6 +1010,8 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
while (sess_data->func)
sess_data->func(sess_data);
if ((ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) && (ses->sign))
cifs_dbg(VFS, "signing requested but authenticated as guest\n");
rc = sess_data->result;
out:
kfree(sess_data);