From mboxrd@z Thu Jan 1 00:00:00 1970 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 8CB0D1D6DB5; Thu, 23 Oct 2025 02:45:43 +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=1761187543; cv=none; b=MmYyvyt40M01JfSdt77GjcdM37vc5MqzndlSMbsGLuRgtLqV7o/C3x8gcKJMdwq7CvZ/mpz7k/YDMq6tf08q7bBZxMv3LPQTVE9gYwPBHgSz8KVGXvCVkXGrdNjLzDltZOWydoVEkhVbWYEw0zr126Gs0G4p1YL8dZx05hY3SlY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761187543; c=relaxed/simple; bh=o8VZqgreM/+4inCjv3Ryf7+yviInpAaMHdtb3IX6YvU=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=Yq1IuBXfiG2yJCuWqsXnuNf7cAhOG7HI3WIo5gL0ztakGjNUc/95SUKUFykh9EPVQAyR0pAVcZaoShEgcfsi2Us24LTPScP6Um2D6AfonnG/gGbml0CD636dOXLq874O7BntIxIgmGY9+NBbexEHnN3Htym97asRTL2SzwEl3L8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=DELixs+3; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="DELixs+3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69DA6C4CEE7; Thu, 23 Oct 2025 02:45:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1761187543; bh=o8VZqgreM/+4inCjv3Ryf7+yviInpAaMHdtb3IX6YvU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=DELixs+3JW+JqnfawdV6brsJEThbe9/wzBqUgy/CUKJ33mQbr/BNONavmP8E0HGmP LaK5jWZXYUAPerhqLMGTxgezcGLObtdiHj1XYVZ5yZ+jM2NMPeGFLfnM+QoPrdasYj YpIKZaPl6NCWE/BnE5KbZxY4FUD4zn8v2SG8wtxs= Date: Wed, 22 Oct 2025 19:45:41 -0700 From: Andrew Morton To: Pasha Tatashin Cc: Mike Rapoport , brauner@kernel.org, corbet@lwn.net, graf@amazon.com, jgg@ziepe.ca, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, masahiroy@kernel.org, ojeda@kernel.org, pratyush@kernel.org, rdunlap@infradead.org, tj@kernel.org, jasonmiu@google.com, dmatlack@google.com, skhawaja@google.com Subject: Re: [PATCH v3 0/3] KHO: kfence + KHO memory corruption fix Message-Id: <20251022194541.68c26d16b615ded15c5d3014@linux-foundation.org> In-Reply-To: References: <20251021000852.2924827-1-pasha.tatashin@soleen.com> <20251021135331.8e0185a173a5fa40add60802@linux-foundation.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Tue, 21 Oct 2025 20:15:04 -0400 Pasha Tatashin wrote: > On Tue, Oct 21, 2025 at 4:53 PM Andrew Morton wrote: > > > > On Tue, 21 Oct 2025 12:04:47 -0400 Pasha Tatashin wrote: > > > > > > With liveupdate: dropped from the subjects > > > > > > I noticed "liveupdate: " subject prefix left over only after sending > > > these patches. Andrew, would you like me to resend them, or could you > > > remove the prefix from these patches? > > > > No problem. > > > > What should we do about -stable kernels? > > > > It doesn't seem worthwhile to backport a 3-patch series for a pretty > > obscure bug. Perhaps we could merge a patch which disables this > > We are using KHO and have had obscure crashes due to this memory > corruption, with stacks all over the place. I would prefer this fix to > be properly backported to stable so we can also automatically consume > it once we switch to the upstream KHO. Oh. I added this important info to the [0/N] changelog, added Fixes: fc33e4b44b27 ("kexec: enable KHO support for memory preservation") Cc: to all three and moved this into mm.git's mm-hotfixes branch.