From nobody Tue Feb 10 01:30:00 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 714BF657A9; Wed, 13 Mar 2024 16:33:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710347624; cv=none; b=METNFzZiH489ihtLDvZ8spkmaoLfJiaKNukOnHAM70rciw68UIAA1YgOaLbJl4lfF4uoOp1kdeympoS6Jyg2yCr4/IP22isf99/NrZrZ1zp+bZNKPmAX9hDQ0VM2u5lwLvp82gqQnRECTv5p+1qK6ltCryeP9aq/Ji8aGqcJOU4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710347624; c=relaxed/simple; bh=b6KsHVP9jXsryXOWt2jPStQpGxz36MdmKep8sRoqC5s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BTNB8EsMnLsozv4fCVJ5me7Jx/2W+s9ALXkyXx2ZBIj3i4swN+oLhhdz+bgjEe+JmSXQrFuDlXvZo5wujv23co4PPaaBoxXlWhQitfnsMBQvy5djN4reXOEjcXJy96tsaNMCk7+9HbDt6+x1JxBQd+82ENgwBTKnU6Q4k2lThoQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=h3Ffo/YE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="h3Ffo/YE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3BABDC43390; Wed, 13 Mar 2024 16:33:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710347624; bh=b6KsHVP9jXsryXOWt2jPStQpGxz36MdmKep8sRoqC5s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h3Ffo/YEshQJa8jw0/Q3RSgfYTEMb2i9MeT3OI0s80jM8sEFAqPrTXur4V/pUg2se iVTwpan1w8AIz4gU7lAB9baO68EH/YyDLM+K7g0uD3nVh8d73C97D3e7SKqXAbjJGY CrMZfgETMUVMzwFQGLcyCibEvaVntLofdCNTG+7q9t1W05cAPm+icU5usW3Rak9/5l vwAR/xwhx/DnsswBWrObxewMptamohaB2tASuNBaNgL88/qfjMNt8opwaDC5iCY6AW F9mV5CmabAiKDMw9e/RxM3Em/dOSD2H0/GuMIBDQ9M9wN5bSWri08LLj6yR1tdQQ/Q GfC7YO0zGGFXA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jason Xing , Paolo Abeni , Sasha Levin Subject: [PATCH 6.7 50/61] netrom: Fix a data-race around sysctl_netrom_transport_requested_window_size Date: Wed, 13 Mar 2024 12:32:25 -0400 Message-ID: <20240313163236.613880-51-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240313163236.613880-1-sashal@kernel.org> References: <20240313163236.613880-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.7.10-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-6.7.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 6.7.10-rc1 X-KernelTest-Deadline: 2024-03-15T16:32+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Jason Xing [ Upstream commit a2e706841488f474c06e9b33f71afc947fb3bf56 ] We need to protect the reader reading the sysctl value because the value can be changed concurrently. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Jason Xing Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- net/netrom/af_netrom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 10eee02ef99ed..e65418fb9d882 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -462,7 +462,7 @@ static int nr_create(struct net *net, struct socket *so= ck, int protocol, msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_busy_delay)); nr->idle =3D msecs_to_jiffies(sysctl_netrom_transport_no_activity_timeout); - nr->window =3D sysctl_netrom_transport_requested_window_size; + nr->window =3D READ_ONCE(sysctl_netrom_transport_requested_window_size); =20 nr->bpqext =3D 1; nr->state =3D NR_STATE_0; --=20 2.43.0