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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6728EC433F5 for ; Mon, 20 Dec 2021 21:35:32 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C00D46B0071; Mon, 20 Dec 2021 16:35:31 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BB0866B0073; Mon, 20 Dec 2021 16:35:31 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A501C6B0074; Mon, 20 Dec 2021 16:35:31 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0214.hostedemail.com [216.40.44.214]) by kanga.kvack.org (Postfix) with ESMTP id 920E16B0071 for ; Mon, 20 Dec 2021 16:35:31 -0500 (EST) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 49F98181AC9C6 for ; Mon, 20 Dec 2021 21:35:31 +0000 (UTC) X-FDA: 78939479262.13.5BF59BA Received: from mail-il1-f175.google.com (mail-il1-f175.google.com [209.85.166.175]) by imf31.hostedemail.com (Postfix) with ESMTP id AD0A520005 for ; Mon, 20 Dec 2021 21:35:19 +0000 (UTC) Received: by mail-il1-f175.google.com with SMTP id x15so8652128ilc.5 for ; Mon, 20 Dec 2021 13:35:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qcBG8nhHB+sRNlK7pbQ7JuxvUVpSVTkBiRPlBoBdveA=; b=Fje853ZVa1sigXm3UGhAHhOugdu5MewkFitIfF+07YtqszK3e4KuesQ5cGsiEPuGER 7fISAadzACuSMhWy5oZ2uWKqDvMLotfG5hi4QjBLecBHqgBgPbc4dDcvzXWpr07pkrBZ 1m2DOj9beJqukp7eN7Cye1xhgmoDOrGIwjKzqdI2yHzgLLznOw+/7Hs4aI50M9B/9gqP +bx+7ewJAPhM0mh6D0IU4sPJvbqoMkyRoqaKfAb7YkAH2jXp0/9v/vSFyK/NPAV0vTRH ff73Q4yuL84ZeqcrAFEr54z7GkfGplMJLZXn9dpfMnq10+1hUWF76b15nuEt0onsOvXK vbPg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qcBG8nhHB+sRNlK7pbQ7JuxvUVpSVTkBiRPlBoBdveA=; b=MwJWEyBk1NV35iomhQylawI2DQQ22FIrKvpRo9zH+9mBc1+GnmYkNwThKyPTFYnG4N IQfsxbnu3SoWFzKjhFNPuOzFbFRMfDOdZMnuPEzRl3edZ6T6VxXdROSNxvMt12ti+uX/ kmDLviwlNmqcS9S/ie3iWbYIhwopT6HJlTArq9DUwZE+vM/IHUzUXt2JUIkchdpD3iIs CFsGD5yQOqIEkWHtY5mh9PWTEnKsBEfw6K1EupI+LSAZ15F+ZWPrqEkpUKSISEquq288 nbjEavWYuASm6nmIDOxfg6r7BttyFD3fr2D0dYXibgN/Zry2CBSBcTBadRcLvkPMqBiE GJXg== X-Gm-Message-State: AOAM530PBS/haKlt76Dvxra0bWo9eq+SCDFWuqhyJKMa6z92njVxbzVt O4v0AhWrvNwnibbDflSucDyZThZ9tAO4m7m4HM4= X-Google-Smtp-Source: ABdhPJxn8l69Bwc+5olDjlFbHVbTxrTbPDSojODyp/C7RJWQAav70g0ZNdqLGDyfKGvbSH/2pmX5IfUJb7NWccgH+O8= X-Received: by 2002:a92:d58a:: with SMTP id a10mr9462133iln.81.1640036129810; Mon, 20 Dec 2021 13:35:29 -0800 (PST) MIME-Version: 1.0 References: <1a2b5e3047faf05e5c11a9080c3f97a9b9b4c383.1639432170.git.andreyknvl@google.com> In-Reply-To: From: Andrey Konovalov Date: Mon, 20 Dec 2021 22:35:19 +0100 Message-ID: Subject: Re: [PATCH mm v3 26/38] kasan, vmalloc: don't unpoison VM_ALLOC pages before mapping To: Alexander Potapenko Cc: andrey.konovalov@linux.dev, Marco Elver , Andrew Morton , Dmitry Vyukov , Andrey Ryabinin , kasan-dev , Linux Memory Management List , Vincenzo Frascino , Catalin Marinas , Will Deacon , Mark Rutland , Linux ARM , Peter Collingbourne , Evgenii Stepanov , LKML , Andrey Konovalov Content-Type: text/plain; charset="UTF-8" Authentication-Results: imf31.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=Fje853ZV; spf=pass (imf31.hostedemail.com: domain of andreyknvl@gmail.com designates 209.85.166.175 as permitted sender) smtp.mailfrom=andreyknvl@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspamd-Queue-Id: AD0A520005 X-Stat-Signature: 84dk6zfkarmgrjtdautecx7agbmynoks X-Rspamd-Server: rspam04 X-HE-Tag: 1640036119-902902 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Dec 16, 2021 at 8:08 PM Alexander Potapenko wrote: > > On Mon, Dec 13, 2021 at 10:54 PM wrote: > > > > From: Andrey Konovalov > > > > Make KASAN unpoison vmalloc mappings after that have been mapped in > > when it's possible: for vmalloc() (indentified via VM_ALLOC) and > > vm_map_ram(). > > The subject says "don't unpoison VM_ALLOC pages", whereas the > description says "unpoison VM_ALLOC pages", or am I missing something? Yes :) The title says "don't unpoison *before*", and the body says "unpoison *after*". I'll reword the changelog in v4 to make it less confusing. Thanks!