From nobody Fri Dec 19 19:15:44 2025 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 804CD13C9ED; Wed, 13 Mar 2024 16:42:48 +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=1710348168; cv=none; b=Y1UE5ciboWxeeFtSR8sP5hyvUFi0FdlinyxrRPA9US+dgcfkUXj1KPhNiFP8l0ssxnM9PgGBIKaql8QHfTOeNwYQwyjFUNmQj+TiEPeFXbrW85MH1DGDVQmFVRulOqEKXIB1YVWbPiO7tRh4UquXDJsgnLhN6gGIvfoEb1n1YQY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710348168; c=relaxed/simple; bh=v1F9PhDK0oX3T92o4m74/kx58+E0UmC3jFyT+LVR/fs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o/CDER+q0jU7jQKP7t8Cp9+EV124uyodd2HKDpYo6WSUILVf94Pn0Rp+fK4lNBP1iWOFEXwzs6dW9XSrDo4ScQ2FCNY+5644tO1JuQcskpnu4ZNE0ulaFKFG3cqCDG11+YVq/esfkV131FzcMqCBdxdJ8VjvYG/IOojnVA+qi1s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=u888Gcl5; 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="u888Gcl5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 48622C433C7; Wed, 13 Mar 2024 16:42:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710348168; bh=v1F9PhDK0oX3T92o4m74/kx58+E0UmC3jFyT+LVR/fs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u888Gcl57wl516iyMboqeO/8aFh4AWRVAOvK+YpkUr3/UTnwmPGAx2Mm1REnsFp6j jpZBdV1GT5WhG5KqCnR/ewBBuU2WotoAopnOLZ6SX7pE3djBozDsBbN5DWPFd96W2q xBSjmv7FFCzGvEgWNaBSEX6dBxOe42UYPfmVq8vT1jNHgAlaJA+s5f3CUDg+R43Bw+ /0ksBVE0iWxQ4y6M9h7sRr3o05KCNoqM5mPVnaToO6Foyx8SD6FKAh351KjrrKV5xo E5aGoRhBErQAKDXaWUirxc1y6LHgIV0Q5s2trKD2UpfGwz3ShrG2hCQCvmZym1DzRa W7RokUBoRTwEg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jason Xing , Paolo Abeni , Sasha Levin Subject: [PATCH 5.15 19/76] netrom: Fix a data-race around sysctl_netrom_transport_timeout Date: Wed, 13 Mar 2024 12:41:26 -0400 Message-ID: <20240313164223.615640-20-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240313164223.615640-1-sashal@kernel.org> References: <20240313164223.615640-1-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/v5.x/stable-review/patch-5.15.152-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.15.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.15.152-rc1 X-KernelTest-Deadline: 2024-03-15T16:42+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 60a7a152abd494ed4f69098cf0f322e6bb140612 ] 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 24747163122bb..6857510967448 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -453,7 +453,7 @@ static int nr_create(struct net *net, struct socket *so= ck, int protocol, nr_init_timers(sk); =20 nr->t1 =3D - msecs_to_jiffies(sysctl_netrom_transport_timeout); + msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_timeout)); nr->t2 =3D msecs_to_jiffies(sysctl_netrom_transport_acknowledge_delay); nr->n2 =3D --=20 2.43.0