From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f178.google.com (mail-pg1-f178.google.com [209.85.215.178]) (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 305DD386C2C for ; Fri, 29 May 2026 17:34:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780076049; cv=none; b=ib2oU/XLFJZXGq1VIMUgF/IpomkNkEF6wCdoB51WjMjvVEYtwvoTt2D3kLqrA1pjd9gte0D2jvWFD+lAw4eGKMV5qjcb84p8ozu+V5I12nkpU17HEA/kyNjUqoUOoeE3y4+W7zw97zGF56NSx8vdxwtjccpZOjACIdWJGQbdHtk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780076049; c=relaxed/simple; bh=rjLfN0SAm0XetwEmFqwIqt7LwciP/mnuvaEnvxaoZJM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=IezTGrFOQR2wBORg1GVw/SQYDJ6H3ahuUfnx47NlEvKSGXfMOhXJdUvUlthUj18JLvmkis1R0bSBuwn2MPVQzrN1hixLLYfSozVNMMB6K5Jh1ViG81gMK9pxEylniYPUyUsA+btw+BJ4cuwHa+7kaKnoKH10reh6LH/7yX2a78M= 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=TsoWXDUl; arc=none smtp.client-ip=209.85.215.178 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="TsoWXDUl" Received: by mail-pg1-f178.google.com with SMTP id 41be03b00d2f7-c855599a77aso1636326a12.0 for ; Fri, 29 May 2026 10:34:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780076047; x=1780680847; 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=xjaihLgvutZ1fFlKyQCNXr6DGsbYvGyqlu1s3B1StM0=; b=TsoWXDUlM4fAjZDpMAyu/NVOjqkl5zm4mrg4oPZTxDnlodgvm42wRQsEOPZawAQAW+ Gc3NUhdk50/14OCNctbmYcrHyYOGz+r23cynRsBsfyb/qMj1DHS7ydbSO305ywWefWN+ UF0mv9l3MtOZXbUkp8wxLz5PVFD/4ohP8h4e9bCVSupi6SljJe6+U8X0aL0IxEXTnALO n3a8BG0C3u87i9RS0uTcpde6WCCqYAcCl91QWf9FHEfUHqBIaiYIAi+uA0DQ8kk/7wB1 U9t7+fVpZCdCiDymN90r2sl7AHCz08+dLRGJFtOE6pxSlTPeDQavUIiMSHZG8zm6iFkx varA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780076047; x=1780680847; 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=xjaihLgvutZ1fFlKyQCNXr6DGsbYvGyqlu1s3B1StM0=; b=nlTwYW6qr1p2+Uc9QKubN7nNk7o+iqh+OJqJ59PvRnvSy7zJ9j6bZHZP/HwUF9d4/5 zMCDhqN4cLkasaF81e7KTZkyO4wyrORh4PV3TAVjmt3pAPvo3VwFX0TzsmatDT671hX7 V1cbfMczXB2Zn/l7Q2wxX47z9rUUPuSz3k4wFqd6egwGXWFJhnqo6YKR0ZdG0s/ejrMZ 2d+IYsANg/46zSCxMQpGP4ekwRLO7xe3eSiNCF7MQUU95teFoYk0QX8DKt0OtptFAe2j RPVFRyMqXxRuJDhYr4ZjIIR/TNrMWTEKooopN5np5lSAXqlKqBFCXbMJc2Fbi51kLfqw A8eg== X-Forwarded-Encrypted: i=1; AFNElJ+f0+USi8girbTgno2iS31RpbLBlk77uRBBdlfcWlgW4k/Zl0LPOvpeTxlRNSsfVmxM18NnmPw2kLQbw7Q=@vger.kernel.org X-Gm-Message-State: AOJu0YyfogbmyYR6aDiy/Y8QU79g42N3x+s2e9iZ1WgmAbVpqASwoekL 2lrluiiGf+rpI/WadJ8V500w6KBbLmO0CWR0JSGLMNRAh8KwtdB+au7KpcMpoQ== X-Gm-Gg: Acq92OGnGprCCPNjUUG1s99vRaNrxAOboxOhPAYdnBWOcT+T/CZMI/76fmC4q5hQzBN mCq5k4lJxLwpIu5YbySM/DoiiasewxNj5mhB9AXIv43lWO5C4hJyAf224dILGpVhMaF+8Hn+lom GUwJ7TE2gSc4wr22ZS6EzimfYQKvMRbjzjkZARWgJH2PmVWbg0AXesyVIdN9JnShXKBc7/NQcBM c1W2pkZdMdDwd6+FPuNZqjKQb4RSjQ7bJFUMV/wfI2LCQ7NJaddEyHws50VJsWLAUbMlGCN8Mu1 r/Pud0vY9seVPCrLIC6SZ2DAGPZzW02Vf2zJS9C9Oxk9d5OGZTBBqygkgQ0nANO4AYrn7Nk61xz hCswJdQ8SZfTxfMBAqwWYmaXbiyvR8K3RciEdYt/fEPxoR4KNLIQO6I1x4KeROSTMyp4shunOaK POakqI5Vw+PRORL619cBQicVgaAYfdn1cQIPcChKnDMKvfUHY0ZCVur54yXg== X-Received: by 2002:a05:6300:189:b0:3a2:c683:fa84 with SMTP id adf61e73a8af0-3b427f6d141mr220913637.27.1780076047144; Fri, 29 May 2026 10:34:07 -0700 (PDT) Received: from fedora ([61.74.238.173]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c85772ba4adsm2361027a12.23.2026.05.29.10.34.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2026 10:34:06 -0700 (PDT) From: SeungJu Cheon To: marcel@holtmann.org, luiz.dentz@gmail.com Cc: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, me@brighamcampbell.com, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev, SeungJu Cheon Subject: [PATCH v1 0/2] Bluetooth: Fix data-race on dst/src in connect paths Date: Sat, 30 May 2026 02:33:45 +0900 Message-ID: <20260529173347.43967-1-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 Two KCSAN-reported data races on socket address fields passed to hci_get_route() without proper synchronization. Patch 1/2 fixes ISO: iso_connect_bis(), iso_connect_cis(), iso_listen_bis(), and iso_conn_big_sync() read iso_pi(sk)->dst/src without lock_sock before calling hci_get_route(). Patch 2/2 fixes SCO: sco_connect() reads sco_pi(sk)->dst after lock_sock has been released by the caller. Both races were confirmed with KCSAN using VHCI-based reproducers. SeungJu Cheon (2): Bluetooth: ISO: Fix data-race on iso_pi fields in hci_get_route calls Bluetooth: SCO: Fix data-race on dst in sco_connect net/bluetooth/iso.c | 51 ++++++++++++++++++++++++++++++++++----------- net/bluetooth/sco.c | 11 +++++++--- 2 files changed, 47 insertions(+), 15 deletions(-) -- 2.52.0