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 X-Spam-Level: X-Spam-Status: No, score=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D2D8C4338F for ; Thu, 12 Aug 2021 15:06:07 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id F01626108C for ; Thu, 12 Aug 2021 15:06:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org F01626108C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 69E828D0005; Thu, 12 Aug 2021 11:06:06 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 627C58D0002; Thu, 12 Aug 2021 11:06:06 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4C9B98D0005; Thu, 12 Aug 2021 11:06:06 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0159.hostedemail.com [216.40.44.159]) by kanga.kvack.org (Postfix) with ESMTP id 335318D0002 for ; Thu, 12 Aug 2021 11:06:06 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id D401818037BFC for ; Thu, 12 Aug 2021 15:06:05 +0000 (UTC) X-FDA: 78466753890.11.10F29BF Received: from mail-ed1-f41.google.com (mail-ed1-f41.google.com [209.85.208.41]) by imf15.hostedemail.com (Postfix) with ESMTP id 8595BD00E652 for ; Thu, 12 Aug 2021 15:06:05 +0000 (UTC) Received: by mail-ed1-f41.google.com with SMTP id dj8so2307473edb.2 for ; Thu, 12 Aug 2021 08:06:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=QEmLCQfmQOuhAIlIo7tcPafee51VNGzdqFJimZNT+qM=; b=KaHfVQvX5t1Gl/ExbaOUje9GfbDNpJxy3O9DDDPK6lqgCRBEspMsuS319Rj3tvxXZu rgg5Dwt0FFu1SsPKItfNcLL+qMjYHNU5khYAm/MFKguqHz+kWovaAVVeZH/IEuy3yJv/ Q1Mch9uD/zrMePWc9us4UQqGcpOGQAFClqnDQ3CMbUgm1a5zjyxy0py54n84rEF+yJo3 EjLufgWVPmsd2j2vYCkJK9dfddOYC7nDEsFq7x2eU55SDH36kskyAmQgetwzsSDuyFfU A2XXlTBpe0eag3MJP1isBUN1KGxKf0OIoGaV82cBaTDStXNtcIeFdSjsONtF4KNj19ys 7IbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=QEmLCQfmQOuhAIlIo7tcPafee51VNGzdqFJimZNT+qM=; b=TdnkuGUjEsQGCOPVIxuFqBc+i/XovKQ9TY/keJyDXdkQWwvIYqL7t5M8M0R+61i9Zn pu8kOWQ37I0P59+vRddB2gsssWnixAXj1Wu2NFZ626zl/z+tNcwI7CV5aFh2dIV1uRAV Lw5P0QZvFwJszgbhoehPERAZ7EYHtZlvguehX1PKfKTseqAcWTFc7emzcHvHdPSSIKAZ G0sxLkPL9zP5JLCvvh67jIKV3ha48B9+SVdxJdT74HyOndeRigXyfGmv3EUaRRcAhbbS 7RtMItMluTPD6hsOu36/JthNhi8OWUc/6bE5AQdrbtlmPZzuMbTJJw8IHsgH9KnCOu9g 0WgQ== X-Gm-Message-State: AOAM5304wwO8H+YfeS5EDHtY4HFW66/WnFLUKXUMi3afPYRdLBhpFmkx xipx1zJGVyU/sXOPnGBKDcqmtN+wr0acA82prr8= X-Google-Smtp-Source: ABdhPJxbJBh/xZnW8LR9jaTOd4+Z93lHVquS+4vlVqdDc1G8LajwvQL4lEQ/ckbptOQhaz+p/Zfs/YPOiX5fcx6umwY= X-Received: by 2002:a05:6402:1299:: with SMTP id w25mr6232247edv.30.1628780764189; Thu, 12 Aug 2021 08:06:04 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Andrey Konovalov Date: Thu, 12 Aug 2021 17:05:53 +0200 Message-ID: Subject: Re: [PATCH v2 0/8] kasan: test: avoid crashing the kernel with HW_TAGS To: Marco Elver Cc: Andrew Morton , Andrey Ryabinin , Dmitry Vyukov , Alexander Potapenko , kasan-dev , Linux Memory Management List , LKML , andrey.konovalov@linux.dev Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 8595BD00E652 Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=KaHfVQvX; spf=pass (imf15.hostedemail.com: domain of andreyknvl@gmail.com designates 209.85.208.41 as permitted sender) smtp.mailfrom=andreyknvl@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspamd-Server: rspam01 X-Stat-Signature: zp59f13zr4oyuddho3wtegidgcrzehwt X-HE-Tag: 1628780765-405207 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, Aug 12, 2021 at 4:53 PM wrote: > > From: Andrey Konovalov > > KASAN tests do out-of-bounds and use-after-free accesses. Running the > tests works fine for the GENERIC mode, as it uses qurantine and redzones. > But the HW_TAGS mode uses neither, and running the tests might crash > the kernel. > > Rework the tests to avoid corrupting kernel memory. > > Changes v1->v2: > - Touch both good and bad memory in memset tests as suggested by Marco. Ah, I forgot to include your reviews/acks, Marco. Perhaps you can give one for the whole series now. Thanks!