From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f177.google.com (mail-pf1-f177.google.com [209.85.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 909AD261B9E for ; Tue, 21 Apr 2026 02:51:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776739890; cv=none; b=hh1OT0mMt8Z21p8USK+94HkPQ6cxGHFiFSAy278l7YJlPq1NAk7XGc9fFOBcQsz5FeVy6hVvkCxux+XsMbpAeMnSgIn9mNKVdbR2u8NeqxYHAW6LvJcTVt+2x0mH1ahvCUhRJ0QaerUD9kEuGv8Y7Y7WZj1kzeyjrOTFQHsYODk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776739890; c=relaxed/simple; bh=VqSBexJMNIHC54WdCID6u/xPpx/3eQos31xFOQdy8sU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=gZWEl1bVwBxKmufY/LhpCYwk5F/aqNBWsTKvCIl7Gtf6yMPB+CT7/RDRmL9Op45diUMrDU7df+1np4PgEQK8D4oYSMe6vTzZTjdech9/868lyGoN9WyNa068czTe6c2t8tKi1QgTGNHLh4r+MDmCG9ynpf+rnBZw1TfSfor644M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=bp6ezImD; arc=none smtp.client-ip=209.85.210.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bp6ezImD" Received: by mail-pf1-f177.google.com with SMTP id d2e1a72fcca58-827270d50d4so3483470b3a.3 for ; Mon, 20 Apr 2026 19:51:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776739889; x=1777344689; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=xpaxH8+vQYVlcVoYKktqzw1Wuz9BvpJGipAw/vPCovU=; b=bp6ezImDvVc9Z9cW1v/Tk+O7IU486/vJ7kpwQLHpgTOOu1lyZAGBTCHSi7M0jnQ5jQ zDbmk2SZ6ooRPZ92w708eRu7kfNdBbHznDmuVBgpOEHy/2XqUCyewLgjs8ogrlSH6olP BhM6QRyQNjCEbr4MtUaXeJLBQE3q4d+EBtcmEdrlASqDKty5Bf4ZLWxADKQ2n2F+/HwT kmsJCU622x4gg3vCDOEe1oTwH5zidwM2QZMVuUsPRAXXE1NMzgoaRlysyZ8KrZWA01r+ OwTWjZr0RzVUI1w3py4g4dKjTNxJ1iELz94qhlFXdnjKUH7YfQUR+SFMB2cUXR8o+1q2 CtTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776739889; x=1777344689; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=xpaxH8+vQYVlcVoYKktqzw1Wuz9BvpJGipAw/vPCovU=; b=OJdtNL/EkTZPNvQSnFXAwZBKO7VtyeBJv5jjN52LLXstPcowUNnUpCl3f+Z/D5TNmJ 7Zjk2Cizpc60ZZ5ekS+stJWV0NDsdl7jj21WIutoEphB0TINqcpsTOgf/Nbn4drUzpL5 RWxQ9eogTFJpZY7RtuZ9AxUrKDZNsn8o5mneSIHaZ1UX0iO+QovX6ysoM8jYJDOCOIWY ZKB9i5zydpXNKfaMsCkQnUfwf6voR+AII3sdDWDnYRPpxhnhAtbk287p8NksqsgaggWZ L7GecxXUADRrelb9Srdkw37y2R/zscA4uWCA0iJ3ZdnjosbQCyba1fPbNCKmagTTHKvh NAxg== X-Forwarded-Encrypted: i=1; AFNElJ9tXIAETaPXzNYaI72wBeBy0Px7ofkEUfJHFgaVZeFpGvQK2CoobAgYkZ3RjxVC5JDsqoKHei11PkCjowo=@vger.kernel.org X-Gm-Message-State: AOJu0YxrN1aTmQwEtNqUsBnijVWZOGti4FS9Xve3NOjvcayCMmKxuJWy Yn3GuqS+HTIv4EV7xQ6wT4zW1diayhRfjlno3n1G1MEcxI2DgMFgXP3e X-Gm-Gg: AeBDieuad+bxr5Wd3yWE5q5JztR8TV5RQDBen9g7PWEmFr6x7fL/05LVDeyjE00c/+w WOGi7mzzd8+7s3/gLi8dQsVZfgOcbNB/wFNjXERvtc4jpmfSOQc3GGIQj3MaKuITtt0aB0wZLsF 8v3FzNIVP56SKbTe+mjbUvbiB/Saa8rw8nYb8qhxlBXTMsnNBeyIMzHxU1nKzxjD/uUxu6Sddi3 q0DkZ7DOd1sn4jkfkExiO3muv/Z4efNDGYB4N3pgAxzSNTwNjNi2GbsUfjWMF2+F2QCI9h9Uxto MYcvxvu2AZhKDmaq9sdkk3e4rhpKPfREzF7PvY7iR+xf59wYNtq1lG6c9MbqkkSEyneu34IEdwG td1/Xb1WoITCfltEKZKfvFYXjMeWJ7uesgiQSlsEnU8Zl3n4Lol8VuEqAs6sS3RoB2In0i7pGq+ E9wkGydanm1Nw8LlUq8XNKdg9GQkifjqzB7ujEg7PijmONBE4bq3SYRq1KtRBexw1OwiLC X-Received: by 2002:a05:6a00:3cc8:b0:82f:1b50:d2f2 with SMTP id d2e1a72fcca58-82f8c8335fbmr17014982b3a.18.1776739888830; Mon, 20 Apr 2026 19:51:28 -0700 (PDT) Received: from fedora ([61.74.238.173]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f8e9d9a1csm12823502b3a.20.2026.04.20.19.51.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2026 19:51:28 -0700 (PDT) From: SeungJu Cheon To: luiz.dentz@gmail.com, marcel@holtmann.org Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, me@brighamcampbell.com, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev, SeungJu Cheon Subject: [PATCH v2 0/2] Bluetooth: ISO: Fix KCSAN data-races on iso_pi(sk) Date: Tue, 21 Apr 2026 11:51:20 +0900 Message-ID: <20260421025122.55781-1-suunj1331@gmail.com> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Found while auditing iso_pi(sk) field accesses after a KCSAN report. Patch 1/2 is the reported race on iso_pi(sk)->dst in iso_sock_connect(); patch 2/2 covers related races on other iso_pi(sk) fields accessed in iso_connect_{bis,cis}() and iso_connect_ind() that were found by inspection during the same audit. Changes in v2: - Patch 1/2: Use sa->iso_bdaddr directly instead of caching the bacmp() result in a local variable, as suggested by Luiz [1]. This avoids reading from iso_pi(sk) entirely for the broadcast check. - Patch 2/2: No changes. v1: https://lore.kernel.org/linux-bluetooth/20260418053239.128190-1-suunj1331@gmail.com/ [1] https://lore.kernel.org/linux-bluetooth/CABBYNZLBoU3byfK_G+=sTkBx3wNwEh2X6_7dG4+4LFtrc3Skpw@mail.gmail.com/ SeungJu Cheon (2): Bluetooth: ISO: Fix data-race on dst in iso_sock_connect() Bluetooth: ISO: Fix data-race on iso_pi(sk) in socket and HCI event paths net/bluetooth/iso.c | 56 +++++++++++++++++++++++++-------------------- 1 file changed, 31 insertions(+), 25 deletions(-) -- 2.52.0