From nobody Fri Dec 19 19:15:59 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 29154633F5; Wed, 13 Mar 2024 16:42:53 +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=1710348173; cv=none; b=LX97koj31RD7tVug5MVEQi7sTCopAsIgUC8a/iwxn3UP+1PChoDnAYi/ozktp5xRvl1QHiKgF3y1RHZBTN05T21qsZlFwilhzPhPkBSNEeh5Yipftw9euoM3GX4r+2vYHuOSzEXuCaBKMdvDmke/b3CPhxu7V1CPbt4GDQzLC24= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710348173; c=relaxed/simple; bh=g43Mh+Ckbo7u84Iinkv4s2Oe8nqvUxcd3wBs+YIKlwA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TM0r0cUgGSPQ/TArKtTiodC5ZNVknn4qUegobK8GaGBPxKCR9mB1uazhmHB/32/4Zcec5vLpUuEXKnGWLD1cMmapye3aR62BZuyI5L/+YL6iiQ+BOaIP5FyCwdHkTzNpO1zwbAzX7Af6emLrKMVzoBW1z8p4OSyAiu8TcZS7XO0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=la5YW2Gw; 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="la5YW2Gw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D3BBC433C7; Wed, 13 Mar 2024 16:42:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710348173; bh=g43Mh+Ckbo7u84Iinkv4s2Oe8nqvUxcd3wBs+YIKlwA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=la5YW2Gwq7KIqMxEjxF7c/kZ87AVjgcIBpNpWbtJPjL4uzpLoprd5PJh6BLojlpg0 8IQepAXmSGtLmkNgxITlphRU6uvmvJpcN1YHpPqHOhcK9e2o5m4eJe+Ln6Qy408j1i gSrTx10zOE9P3W2oI0XuC9tfw1oU2nN9FL1e3QtYfdRNlyCj8XWWMUpUKx1m2QZblw KcF7/vNu4kCXFOZzCyW22rr4CtXEPXjkRaAbJnWtDUlQkix+LaDtdPX99GGFeMrcZ6 8YnnH/z+2irlqqc2udKnRqmagnWaSVlgkmUeLMMWm9d/R+ijF3MJH9vxLlWStmci7/ vhx3k/gntSiDA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jason Xing , Paolo Abeni , Sasha Levin Subject: [PATCH 5.15 24/76] netrom: Fix a data-race around sysctl_netrom_transport_no_activity_timeout Date: Wed, 13 Mar 2024 12:41:31 -0400 Message-ID: <20240313164223.615640-25-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 f99b494b40431f0ca416859f2345746199398e2b ] 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 d780adf54e19e..376b6af431448 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -461,7 +461,7 @@ static int nr_create(struct net *net, struct socket *so= ck, int protocol, nr->t4 =3D msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_busy_delay)); nr->idle =3D - msecs_to_jiffies(sysctl_netrom_transport_no_activity_timeout); + msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_no_activity_timeout)); nr->window =3D READ_ONCE(sysctl_netrom_transport_requested_window_size); =20 nr->bpqext =3D 1; --=20 2.43.0