From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73EF6C433EF for ; Wed, 27 Apr 2022 11:58:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233365AbiD0MBr (ORCPT ); Wed, 27 Apr 2022 08:01:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58386 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233283AbiD0MBq (ORCPT ); Wed, 27 Apr 2022 08:01:46 -0400 Received: from sipsolutions.net (s3.sipsolutions.net [IPv6:2a01:4f8:191:4433::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7396C34B81 for ; Wed, 27 Apr 2022 04:58:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=Content-Transfer-Encoding:MIME-Version: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=xWBQDOMsDvcvRBIfRq97FuFoMmO767+6v9ExW2x3pNY=; t=1651060714; x=1652270314; b=pNTjbjzvIowXkZPCgjPWidbqkJa6NXzQ4tibYg5MRnINs1y c66YhtmYz4Qo/rVNsRWdLs0cwE0oGVYs9aPv9n9et4jU/YDidAG2oIVJSFgx8u8mJxpcqgnERWcqi Zl3MKaGPtVWCUPnITbYWbboXrOlXxLNz9nHb4X+YQsE34eUfbxbRqFIqysKIU5Re+DrlcHasCvGNY u3s4OJfs3rSzJd8lyfE824TjcHUAUveXhiFGMilnqrtthKEZZJRt1R5TOyVWmSX+4RA/RYidug5MA QSr5kOCWsVB2tiQXm3YfVFugfbxt+Umywcza+gNjRH0tD7CG4xul9BAQZBRsLQzQ==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.95) (envelope-from ) id 1njgJO-00FslB-VA; Wed, 27 Apr 2022 13:58:27 +0200 Message-ID: Subject: Re: [PATCH v2 ] devcoredump : Serialize devcd_del work From: Johannes Berg To: Kees Cook , Mukesh Ojha Cc: Thomas Gleixner , linux-kernel@vger.kernel.org, sboyd@kernel.org, rafael@kernel.org, gregkh@linuxfoundation.org Date: Wed, 27 Apr 2022 13:58:25 +0200 In-Reply-To: <202204261421.A58121A53E@keescook> References: <87levt14kn.ffs@tglx> <8186de033c87f0cdec296ae272a72c5b9a2880a3.camel@sipsolutions.net> <878rrt0xa2.ffs@tglx> <13df1664-fc52-4772-afa1-4f75019b7830@quicinc.com> <202204261421.A58121A53E@keescook> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 (3.42.4-2.fc35) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-malware-bazaar: not-scanned Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2022-04-26 at 14:25 -0700, Kees Cook wrote: > > > > https://lore.kernel.org/lkml/1650981343-11739-1-git-send-email-quic_mojha@quicinc.com/ > > > > While, we would like to hear from Kees about reason of immediate flush from > > disabled_store(). > > This is lost to ancient history in my brain right now. Do you have any > references to past threads on this? The only thing I remember about > device memory dumping was just to make sure that lockdown's > CONFIDENTIALITY mode would block it. > Hm, no, I don't, sorry. I don't even have an email record of it now, perhaps it went to my @intel.com and has long expired? Anyway, I seem to remember you asking to have a disable bit and I implemented it in commit d45333294da8, which you reviewed, but I have no record of you asking for it even though I think you did :) johannes