From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93D35C43613 for ; Thu, 20 Jun 2019 18:01:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 73E1421670 for ; Thu, 20 Jun 2019 18:01:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561053664; bh=n0eUZ/U4rMjPxOlzziQdo233Akn4AXtfI8W4B17cSXE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yss514vNM++p+0O4XE34h7ER93Ju3+fp51862HULLw/2Mgg9PSm6LSQ/nw1XK6qhA HD4H2q6R9M///+5A+EHT1li0ai2qseYwTqfObLx+c7ohzXDu9Ypcdl4AJPwXCWlXUA UBoiN7X0gyLliSdqRrp7whspF7Gp2x27xfNsRSpk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726506AbfFTSBD (ORCPT ); Thu, 20 Jun 2019 14:01:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:50246 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726485AbfFTSBC (ORCPT ); Thu, 20 Jun 2019 14:01:02 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A9A0D2083B; Thu, 20 Jun 2019 18:01:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561053662; bh=n0eUZ/U4rMjPxOlzziQdo233Akn4AXtfI8W4B17cSXE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N8tLdrd975b3YkVyzKQakKxlgf4Me2MlCJEssc4jeyk+ACv0AOKr4JWg+ESo0UW8K iHTx7F7JEllGqR67+jeaDKhd7YHHMxe6NBIaM68sGPibqiSqqP9uaxWaUkrlaR0XHQ aM+RV9BKBdGMMR3KdaHNYifWVK5XOsY5Fr+nUUu0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Vasily Khoruzhick , Hans de Goede , Jeremy Cline , Marcel Holtmann , Johan Hedberg Subject: [PATCH 4.4 39/84] Revert "Bluetooth: Align minimum encryption key size for LE and BR/EDR connections" Date: Thu, 20 Jun 2019 19:56:36 +0200 Message-Id: <20190620174344.217870954@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190620174337.538228162@linuxfoundation.org> References: <20190620174337.538228162@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Greg Kroah-Hartman This reverts commit d016dc1bd29a2cfb0707fc6fb290ccd21f3b139c which is commit d5bb334a8e171b262e48f378bd2096c0ea458265 upstream. Lots of people have reported issues with this patch, and as there does not seem to be a fix going into Linus's kernel tree any time soon, revert the commit in the stable trees so as to get people's machines working properly again. Reported-by: Vasily Khoruzhick Reported-by: Hans de Goede Cc: Jeremy Cline Cc: Marcel Holtmann Cc: Johan Hedberg Signed-off-by: Greg Kroah-Hartman --- include/net/bluetooth/hci_core.h | 3 --- net/bluetooth/hci_conn.c | 8 -------- 2 files changed, 11 deletions(-) --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -174,9 +174,6 @@ struct adv_info { #define HCI_MAX_SHORT_NAME_LENGTH 10 -/* Min encryption key size to match with SMP */ -#define HCI_MIN_ENC_KEY_SIZE 7 - /* Default LE RPA expiry time, 15 minutes */ #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -1177,14 +1177,6 @@ int hci_conn_check_link_mode(struct hci_ !test_bit(HCI_CONN_ENCRYPT, &conn->flags)) return 0; - /* The minimum encryption key size needs to be enforced by the - * host stack before establishing any L2CAP connections. The - * specification in theory allows a minimum of 1, but to align - * BR/EDR and LE transports, a minimum of 7 is chosen. - */ - if (conn->enc_key_size < HCI_MIN_ENC_KEY_SIZE) - return 0; - return 1; }