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 0F1C83264F4; Tue, 13 Oct 2026 03:40:22 +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=1791862824; cv=none; b=NRzrY+39B/QYx6aBvuZxdRnqVCM4jbcPzeFUsMdZTcftnGpmn3faZ6sC31igjf8ylbpc/lyYKbPEHwZC0LFkg00bC2r9dNxV3GsPc1dBY7Ai+noX2adCy69OtLzkNHu+PJV0i2QhmQUqU3at0FSuVh4ryE+NkWyr47mPjB56Jhs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791862824; c=relaxed/simple; bh=Pf8PDlvhGyxPRJ04hgjmStlPo6N2sQGF+ut0PITXAXs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=K22IihbqoQvCLepeqjlL0JgZTwKIC3mxLq12oyk7M1MY6S+t5hKD6+eKYmGxc9pSqrn//6EIWDEitJ4op83z+LTl3W4/4DZolh7HMWJyGOr7Sk2Wy0XhW/wvD6RIbx73Xmq1gtQafq+0GcWQkpigFxJYqOynVAJAq408+pkzhxw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Oj5zpxoG; 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="Oj5zpxoG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D4831F000FF; Tue, 13 Oct 2026 03:40:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791862822; bh=MHKRBDHmsXsK48oKqrexgIqndzfvmbI+AVfd803mUSA=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=Oj5zpxoGgdzmeIog+7KO1QLrI4HUFkQNtnMsz/Sf/iwRjmXaISNO5VFNexwDOfA7I QLiRzOMZyLuAs0cGPMstdgayiiW91bVrnPRgVfDxA9f45B1BQKQ9Sgcl3vWBYynlem 9eFhgaA4Z7w3AHx2qx192F+EVD8bM8OD2lg7BcxAX3RJCu4AEjGD+/ajUMxe/+F0lU vAUsbFr/Gr22WvlIBVGbtqHob5Fevhl6bJtrxBAtC9YFcaDUeubtmBEl3k1SWaU16P wOPAnsesfWb+rpki9Z4AUpY3luNT5svEsOgbs3aNHBuDM0iTMVRSnTo5Z6/YR5f3Xg YheZMVbSKLEoQ== Date: Mon, 12 Oct 2026 20:40:22 -0700 From: Kees Cook To: "Vlastimil Babka (SUSE)" Cc: Andrew Morton , Harry Yoo , Christian Brauner , Jan Kara , Roman Gushchin , Johannes Weiner , Michal Hocko , Shakeel Butt , Muchun Song , cgroups@vger.kernel.org, linux-mm@kvack.org, Pedro Falcato , Kuniyuki Iwashima , linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next v6 2/8] ipc, msg: Account msg_msg allocations with GFP_KERNEL_ACCOUNT again Message-ID: <202610122032.A63BB70@keescook> References: <20261006092030.got.500-kees@kernel.org> <20261006092035.166776-2-kees@kernel.org> <202610092010.934197B@keescook> <20261010153714.b9e91801ea93675da099e903@linux-foundation.org> <4866a382-42d9-44da-b68b-377d36642528@kernel.org> 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-Disposition: inline In-Reply-To: <4866a382-42d9-44da-b68b-377d36642528@kernel.org> On Mon, Oct 12, 2026 at 06:46:48PM +0200, Vlastimil Babka (SUSE) wrote: > On 10/11/26 00:37, Andrew Morton wrote: > > On Fri, 9 Oct 2026 20:14:20 -0700 Kees Cook wrote: > > > >> Anything with Fixes: will end up in stable, so I just leave off the > >> stable CC these days. > > > > -stable maintainers have been asked to Not Do That for mm patches. > > Other subsystems are doing the same. > > > > I don't know how they determine whether something is an mm patch. A > > patch which covers do-do-that and dont-do-that parts of the tree is > > likely to be mishandled. > > > > So yeah, add that cc:stable to reduce the possibility of mistakes. > > There's also this from the list of pain points at > https://lwn.net/Articles/1099594/ > > Kroah-Hartman: subsystems that do not add CC: stable@vger.kernel.org > tags to patches, but which still expect the stable team to pick up the > important fixes anyway. The stable maintainers are overwhelmed as it is and > are not doing that. tl;dr: yup, sorry. I will add CC:stable in the future. I went to go figure out where I had gotten this misunderstanding. netdev dropped their special handling in 2021 in commit dbbe7c962c3a ("docs: networking: drop special stable handling"). But I really thought I had Greg tell me (in person somewhere?) that "Cc: stable" was redundant, and I think what I misread in current docs was, "... such tagging is unnecessary if the stable team can derive the appropriate versions from Fixes: tags." in https://docs.kernel.org/process/stable-kernel-rules.html#stable-kernel-rules but that, on closer reading, is about the _versioning_ syntax of the "Cc: stable" trailer. -- Kees Cook