From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CBEDA503BE9; Fri, 25 Sep 2026 23:35:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790379304; cv=none; b=E1dCQq1Kt7U74pYFrXzFV0TrjOE77JMWrGQhLMuetoU2qSLJ4sE4ZOhP8vp1IvVvfBHtab3hs1bjHOWZGdJEgqBv51pMgV6v7Svk5PiFOUOL4wjX17ab58vrtRT2+orzUK9xf4NvbIzthNGTa6wa0vxr+0AQCzYmGqyNv+9KToQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790379304; c=relaxed/simple; bh=5UXaEySXQcTsbhiYIw0iUlAwZ3atvAEbvNDrglAetrA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Vx6U/gwf5Sfb8kpCqS3WRLuyJ+nN1ZmK9v/m4oG4qTy5pj19NADEe7GtxSy0ATfXl9yeePGr973o9bS+8M/g1peg3NAlzHeTwjeeWID6uNd+S8XRpVrcpZVXWBP+3e+wQIMQagwEDVpwZlvRA5SMtCoLsDFzq2aP+rjx4RjcZX4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HlwLCdup; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HlwLCdup" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E21A1F000FF; Fri, 25 Sep 2026 23:35:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790379302; bh=WhbYUgghyjfVx+COyKrdenujI2XkkzFQG+GWstWPtuQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=HlwLCdupOO+7w7kf8CtjTBSq45imL9xSRjW+YXXYtzikvbzSWuYBZGyq4XYnqMaQn 0FeCYBONqnvl+sAYv0cQs5emQFld/I4boEE/xHPpRKlX0Zv1TPnJ4+dRy6m/LcbyOz OYTFmOHh4KeRyxADJU8jNGB/m7fK7aRyYL1HofLBOX4Iez7U1nGTNyHeVoxGpNa+N/ cZV5O4bJrGIGhkkssTs+aPmDttoBljxVvk28gyn4I8XggnIYQLYoR6HOh7b4hdgRrq kzXqXNHjkjiac64b9T/AWmkMZFVVxirJPo5KKpY/TjT7NF/0t3417VvdVGWyqeFTfy yX4F8enySGrMg== Date: Fri, 25 Sep 2026 16:35:01 -0700 From: Jakub Kicinski To: "Binbin Deng" <18983559317@163.com> Cc: jk@codeconstruct.com.au, matt@codeconstruct.com.au, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, horms@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Binbin Deng" Subject: Re: [PATCH net v2] net/mctp: publish the mctp_dev only after it is initialised Message-ID: <20260925163501.18db5195@kernel.org> In-Reply-To: <729830b8.130.1a0c945579d.Coremail.18983559317@163.com> References: <729830b8.130.1a0c945579d.Coremail.18983559317@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 22 Sep 2026 21:19:19 +0800 (CST) Binbin Deng wrote: > + /* > + * Associate to net_device. Publish only once the object is fully > + * initialised: __mctp_dev_get() runs under rcu_read_lock() only and > + * hands this object to readers as soon as mctp_ptr is assigned, so > + * they must never observe mdev->dev == NULL. > + */ Too obvious to include, I'll trim when applying