From patchwork Tue Aug 23 04:16:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhengping Jiang X-Patchwork-Id: 12951691 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0955C25B08 for ; Tue, 23 Aug 2022 04:17:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236812AbiHWERF (ORCPT ); Tue, 23 Aug 2022 00:17:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235968AbiHWERD (ORCPT ); Tue, 23 Aug 2022 00:17:03 -0400 Received: from mail-pf1-x449.google.com (mail-pf1-x449.google.com [IPv6:2607:f8b0:4864:20::449]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AAB535D133 for ; Mon, 22 Aug 2022 21:17:01 -0700 (PDT) Received: by mail-pf1-x449.google.com with SMTP id bd20-20020a056a00279400b0053609a39408so4146054pfb.3 for ; Mon, 22 Aug 2022 21:17:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:mime-version:message-id:date:from:to:cc; bh=RQF+Hp7R78XaNSbP7FojiWh6Ao2+lXh+qmPouBKsoxs=; b=hvvCtSMC0Rq+dBBMJ5/nypqanMxOAHvudpyxc+IxZ6lJomJw9YZ+46Td1IjlOeO3sQ 6jNaU3VtHrGBlpybAUUCHjrZbX//Xl5mS4RV2d40mCyQSKNo4ZucXdF7F8I1g1fvqZdM Sqpg4AMErjvRTLy6cINr88zSPKEpf9haHufA8oKfqPNnmE66jyNZt3Hbta+VPSyri8B5 3plvN2/EuHLtLkTE+mPOETi1Ti3qioAIspnkbs8HD0h8Esn6G+fni3dezZppbtQ8ZtwJ UO9UneKitbkHzuBhN/xJxXiQIveSx4GJEPL06MLK9fyI4FVz9ZDtJeCDPiCj2vduLlpt 3RfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:mime-version:message-id:date:x-gm-message-state :from:to:cc; bh=RQF+Hp7R78XaNSbP7FojiWh6Ao2+lXh+qmPouBKsoxs=; b=RGExMqw7PhcSke2c6ruHtpBfoxuEUdhUv7WWLmEjVxyr+GovN6qljtKmYbJcUN92nr tX4d65xC3Hs1M5reRgUVxHQiyjh9oBicmDXneVIRGiQmi1LPVRsocjm4b/+ZRjA2IsAf jQocHnL8Fi+LQDGlbqTuC5fDktSx8MsF/AQ4gOKpUlICc7S0ncSo6CBVhYK1rlNPWk1l 2N2Diz1Injkmt+184m2fxx7rExTb53qBgJgfqbPRCWaDzzOdUh+zntwNbX7o/h7lrrID fyA5IyW8ms6f2xBEkZAkMaA9RIqhmx67XmX+hKxiZx5RLgOPOsoFsWi+M9xVUqoJwyEm RLMQ== X-Gm-Message-State: ACgBeo3KouMBMTToxp2selg4xUzbDIm7HhhfKEf8H12NlG2/nCs3bEtt M8jwj48MkpN00MxAezX28M8b02OxpmirEbogkpafpf/IBQvKmguWGp5qaLcyiWP9e6LvXpUb9t0 DLsjStRf/vgjlHuWXYS/S5hD1Lv5PN/JQOcIWJn/lkQdHUif7tbjldiHJgE69KkG3peY055pmMD ca X-Google-Smtp-Source: AA6agR5GsrlymQnzABGSg82b/1ULRf+EGCNJ+vYGzb2JaeGX2VQvvlFplwzTUlar4K29y9a31LyiQW1sAtAP X-Received: from jiangzp-glinux-dev.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:4c52]) (user=jiangzp job=sendgmr) by 2002:a17:90b:354e:b0:1fa:a4a3:bb3a with SMTP id lt14-20020a17090b354e00b001faa4a3bb3amr1542937pjb.134.1661228220929; Mon, 22 Aug 2022 21:17:00 -0700 (PDT) Date: Mon, 22 Aug 2022 21:16:55 -0700 Message-Id: <20220823041656.3398118-1-jiangzp@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.37.1.595.g718a3a8f04-goog Subject: [kernel PATCH v1 0/1] Bluetooth: hci_sync: hold hdev->lock when cleanup hci_conn From: Zhengping Jiang To: linux-bluetooth@vger.kernel.org, marcel@holtmann.org Cc: Zhengping Jiang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Johan Hedberg , Luiz Augusto von Dentz , Paolo Abeni , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Hold hdev->lock for hci_conn_failed. There are possible race conditions which may cause kernel crash. Changes in v1: - Hold hdev->lock for hci_conn_failed Zhengping Jiang (1): Bluetooth: hci_sync: hold hdev->lock when cleanup hci_conn net/bluetooth/hci_sync.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)