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 B5B7DC4167B for ; Mon, 11 Dec 2023 09:53:04 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 281E16B00B1; Mon, 11 Dec 2023 04:53:04 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 20B386B00B2; Mon, 11 Dec 2023 04:53:04 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0AC636B00B3; Mon, 11 Dec 2023 04:53:04 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id EA8316B00B1 for ; Mon, 11 Dec 2023 04:53:03 -0500 (EST) Received: from smtpin29.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id C03501C0F28 for ; Mon, 11 Dec 2023 09:53:03 +0000 (UTC) X-FDA: 81554073846.29.7ABC470 Received: from mail-oi1-f169.google.com (mail-oi1-f169.google.com [209.85.167.169]) by imf29.hostedemail.com (Postfix) with ESMTP id 0FAA7120010 for ; Mon, 11 Dec 2023 09:53:01 +0000 (UTC) Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=25ZxhwH+; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf29.hostedemail.com: domain of glider@google.com designates 209.85.167.169 as permitted sender) smtp.mailfrom=glider@google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1702288382; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=RkurISIjMkn+2I3PnXKwVyMchslMNcfqaTJxR0Aia2Q=; b=ACaTDyOs3g1KYuBdjLwIHDhdJgRCcn/FjlAGSPNAcGvqiT2hbc2+ak6cB/JxpWLUtFW88H A9KDRo8TgYJ7dG/ah/DONAlU1sShTRF8h1s6dEN9BWWHuyezZ5guB27coH1GWwNnRRBFs6 tWoaN8NxDGmHNHt5patJRfYsZ1TwrwI= ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=25ZxhwH+; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf29.hostedemail.com: domain of glider@google.com designates 209.85.167.169 as permitted sender) smtp.mailfrom=glider@google.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1702288382; a=rsa-sha256; cv=none; b=vFpbIOy+Rxl/pnSBP7wlIqUGv81rducLCNwIfAeYB4FdxXk1Oed9P7y98NTMC+sZn0FFZg KUp4JsZaDRAJcwJXxf1HEUHwQrgyiO9FfDF6ZrEQPCRmMcfpl6EPHtm5RYQsfwQUEZ+oYE J3idflhHDjh8VZA4dvW42tB2udNgqoU= Received: by mail-oi1-f169.google.com with SMTP id 5614622812f47-3b9de2332e3so2837447b6e.1 for ; Mon, 11 Dec 2023 01:53:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1702288381; x=1702893181; darn=kvack.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=RkurISIjMkn+2I3PnXKwVyMchslMNcfqaTJxR0Aia2Q=; b=25ZxhwH+mx+gvDVBFcQW1dT0MuFpcHV55BXXkndsMj+3vQ8b/vgZnNbq4JMySJsPHj W8TuFswhZKzfKQDLBRb1d0Uqokvru2tQEe3LD1imQASr7U45N67b8+rFBXsMd0n/9z+I u04VzyK1Vhf5KyRvS0PLr+PWXSaNURBzeTrFE7UnCTBt+CO6S4fOQCTAn+eOQYC/gPqU //yTrJbVdynII+tlZZ3fWMG7taVF406ZFBsrw43c/StTNw1xPWMSKhqVNzbXdWSGFzjk heT40FsQKxzG8c68YnXo8LdMPOqMC4KN2TEm+v2nz/yV2UGU6+TZjUSl6IX7vHeWbDdD o03g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702288381; x=1702893181; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RkurISIjMkn+2I3PnXKwVyMchslMNcfqaTJxR0Aia2Q=; b=ImovQPR0AL+X+B6LYO7pGLPkixKYi++yA4uFhS7AE2iu8Rga/SFBVwOPQNS5OlhK8I 1nuUxbKoEpOc8YQ9yAC2TavBdiYjUD2KM0JDTDDYlOUzXkjmKLj+sJudk6jWxjoQ5IrD TdW3tl92Ftptw8gQD76+cbReui8ds5sAfecBPW8NnZxdsnQYHjSAjIdRbw1NSRgUMkhc lbGSPT09GIlPoBpKpfgln/YSVlFx+Hvz2pO01M4ZQ26jDfgxfp132ZKKU0JgXeFAsHta ttamFZD4KXhcClDRIeUFPY7FH9jCuZyf//pXKJ05//ya2o0DLeJM9LvctLf6ZyC6CIAg 6l2g== X-Gm-Message-State: AOJu0YzVJ3VLrvwz/TUWLwPLH5KaYKC1+oeGE6gV1ASWVq7fHBNOEz1v nK9f11DRA/7dEjYNAVDzpxlJx2vva8iWUzEta0qUgQ== X-Google-Smtp-Source: AGHT+IHBzcyPtkbQDFQr+6LIt2oxnTSj1NsMCf/LD4g/EkcctNVYyjvt6+1REaXUAWomwb2Qz0o/56s8V04JUzAkCQ8= X-Received: by 2002:a05:6870:418c:b0:1fa:406c:219 with SMTP id y12-20020a056870418c00b001fa406c0219mr4019357oac.28.1702288380928; Mon, 11 Dec 2023 01:53:00 -0800 (PST) MIME-Version: 1.0 References: <20231121220155.1217090-1-iii@linux.ibm.com> <20231121220155.1217090-6-iii@linux.ibm.com> In-Reply-To: <20231121220155.1217090-6-iii@linux.ibm.com> From: Alexander Potapenko Date: Mon, 11 Dec 2023 10:52:20 +0100 Message-ID: Subject: Re: [PATCH v2 05/33] kmsan: Fix is_bad_asm_addr() on arches with overlapping address spaces To: Ilya Leoshkevich Cc: Alexander Gordeev , Andrew Morton , Christoph Lameter , David Rientjes , Heiko Carstens , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka , Christian Borntraeger , Dmitry Vyukov , Hyeonggon Yoo <42.hyeyoo@gmail.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Mark Rutland , Roman Gushchin , Sven Schnelle Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 0FAA7120010 X-Stat-Signature: uaey11nkjxtkynf4jx4yibei4fmam8or X-HE-Tag: 1702288381-847217 X-HE-Meta: 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 Fqg337Oy 2K2hQVE7CoaqLWaWyQyFobBRtf4wqV1Hz1X6J7rNRFDt+dfgVKIAbBBSjl/a9alVZ/kKpHecN0v1Ai/WjrArr5p7bpK03t2rr83n9Qi4IWuJTd3MJiYr2sj5UQV++WrSuEw8frSzhCtfbiQ5vAcg/AORp7uizWirWlBetSYux6tQ+LWnizyNJDnHXQvB/6pR7VWi2Ht62+pKvVB16/Iav6+ZOSQQe45Xs4M/6p/2J/LTWNiyBqaOkGexgCinN3Sw++445GRNit0YODuKMBKJhpnRp3zxxkohhpNCaRV+hdK+BCjmqt2QPCVKgKuOU2JseIZk6bjdLsNO4vCzgf9Vwh9AMz6KJkhsl/BoTyUHhsggF/fRFHXc/yic95kHfOYx7Ey6BJ6ARWr99nm4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.090270, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Nov 21, 2023 at 11:02=E2=80=AFPM Ilya Leoshkevich wrote: > > Comparing pointers with TASK_SIZE does not make sense when kernel and > userspace overlap. Skip the comparison when this is the case. > > Signed-off-by: Ilya Leoshkevich Reviewed-by: Alexander Potapenko