From nobody Mon Feb 9 17:56:27 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 5946660263; Wed, 13 Mar 2024 16:38:01 +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=1710347881; cv=none; b=L1gKQP3EnFOETxThOgFbTFS2sg0YTRRthWX6AnvivEl8Lt2P/1FNKtGWiq7J5byvLgZejpaUsE7wQcSrS0x9A02RWLEDkTw9M8xVB5X2HhXRX73OKM1Ht5DW4wQKbAGVtWiCMYhbw9Jtz5Bq1gDcP5AdeNukf55fVzfDzsP37E8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710347881; c=relaxed/simple; bh=ERDYrTAXbmn6vjBsFmmF9bbBTgTNgZvqT4eMG9TUEdU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HfLCm7AQjC2M76GqZLwP9lH1cnhxa8i25x/iEfeLW6zv1XMaffKHytOUm8oBnPkpbytRZFAwpzYgrEg12xy9+sJoDglpU5FRF2LXbL+SnF/KJjs0qDl8hsqaJ8qq5JgUHviN6+rwP9CiHz4f8hnw7tRpwVQDI0ZdbEm1DCKxScw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=korHunWV; 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="korHunWV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69AD3C433C7; Wed, 13 Mar 2024 16:38:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710347881; bh=ERDYrTAXbmn6vjBsFmmF9bbBTgTNgZvqT4eMG9TUEdU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=korHunWVlnBsbAbUIhA65v364J8QDF5kdVtqErVZ8H21+kQrSd1sOHCom/d9wkWQr qbkWI5TK96osMFyCjVebH+WRIVolTEYrzwZA9kt6+wR/qxcK7EhcYbcZ43RVgyCh/+ X3PXlCoX1NpFHMqLJZ4wgwqz03YQ2x0BqRSm1GnKTiIWkXS9p194E/XIAVP8H3uVOJ X3Ga37FrNIPxcY9dLm8mDi1K8mNMZQmaFApmsGzF00Kp19RKnDTAFfR+T8eFYx8vkQ fKsONpvFJUnmM0LRj2xnow0QyGegYfySQ93F2o26gaMmbzEZb+J6oaoeS6Gb8mjAEb 416FrSSwDSQlA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jason Xing , Paolo Abeni , Sasha Levin Subject: [PATCH 6.6 42/60] netrom: Fix a data-race around sysctl_netrom_transport_maximum_tries Date: Wed, 13 Mar 2024 12:36:49 -0400 Message-ID: <20240313163707.615000-43-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240313163707.615000-1-sashal@kernel.org> References: <20240313163707.615000-1-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-6.6.22-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-6.6.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 6.6.22-rc1 X-KernelTest-Deadline: 2024-03-15T16:36+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 e799299aafed417cc1f32adccb2a0e5268b3f6d5 ] 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 d8a25f614c500..a3b02f090bba2 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -457,7 +457,7 @@ static int nr_create(struct net *net, struct socket *so= ck, int protocol, nr->t2 =3D msecs_to_jiffies(sysctl_netrom_transport_acknowledge_delay); nr->n2 =3D - msecs_to_jiffies(sysctl_netrom_transport_maximum_tries); + msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_maximum_tries)); nr->t4 =3D msecs_to_jiffies(sysctl_netrom_transport_busy_delay); nr->idle =3D --=20 2.43.0