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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 DF1BFC2D0A3 for ; Thu, 29 Oct 2020 09:55:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 851582076E for ; Thu, 29 Oct 2020 09:55:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726343AbgJ2JzO (ORCPT ); Thu, 29 Oct 2020 05:55:14 -0400 Received: from mga18.intel.com ([134.134.136.126]:1046 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725385AbgJ2JzO (ORCPT ); Thu, 29 Oct 2020 05:55:14 -0400 IronPort-SDR: +gWeyZnKCJPDdw2Y89dHyV0mvBuGyD0JPEfKr05Ol6ehuZmUd/kagNUEerMul06RMv+PbiLGEX xnVBE2X2pbpA== X-IronPort-AV: E=McAfee;i="6000,8403,9788"; a="156178770" X-IronPort-AV: E=Sophos;i="5.77,429,1596524400"; d="scan'208";a="156178770" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Oct 2020 02:55:13 -0700 IronPort-SDR: y3UNQJb10QSQQIGOUQN/ULADFSnJyyuoSiEfwZkYOLUrdz6dRSZlO+X4W0e3K1lrbi4cD2hg/1 qZwcsIRbkj8w== X-IronPort-AV: E=Sophos;i="5.77,429,1596524400"; d="scan'208";a="536607304" Received: from twinkler-lnx.jer.intel.com ([10.12.91.138]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Oct 2020 02:55:11 -0700 From: Tomas Winkler To: Greg Kroah-Hartman Cc: Alexander Usyskin , linux-kernel@vger.kernel.org, Tomas Winkler Subject: [char-misc-next 0/3] mei: bus: null derefence in rx Date: Thu, 29 Oct 2020 11:54:41 +0200 Message-Id: <20201029095444.957924-1-tomas.winkler@intel.com> X-Mailer: git-send-email 2.25.4 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fix race in receive callback for drivers on me client bus, that results in null dereferencing and improve the error handling. The first patch 'mei: protect mei_cl_mtu from null dereference' itself is sufficient to prevent the failure and is intended for stable. Alexander Usyskin (3): mei: protect mei_cl_mtu from null dereference mei: bus: do not start a read for disconnected clients mei: bus: deinitialize callback functions on init failure drivers/misc/mei/bus.c | 18 ++++++++++++++---- drivers/misc/mei/client.h | 4 ++-- 2 files changed, 16 insertions(+), 6 deletions(-) -- 2.25.4