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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=EI+HK5d2VVHprte9/R4H7nRhtttrT0pgRQ4cGp2gqIE=; b=DszWTBWhNCwKbYPbGNFQJ1x3S4xZKzJo3Nzz/OV+45/qCtpfW7uQuH5PGcMOlPhdxZ /fG9zdlvBF0pBpT4+wzKTzmugx0yRVWJ6YDLASwPt7M6/yue7z16ysN0UfQGy9rtLLHT V4rUGLeH365tYaog4sYD5sghFuabtkFVEMsPd6xqdXs9uEXQKP5xF/v69KV8HWVR92Sq 76/yLGZoYMraS13dxZ2G2ZV5heM9A5gYdcyg2j3qg2VzeInc/5CoF35i/B6Qx1X+AgV4 WYJ0l90uibGkjkYeJychoSHeIN0tA5dCFqLNgbIprvtexIiSK7JhHRs+4uWG4s9mmPL4 cisg== X-Gm-Message-State: AFqh2kqrl5J4uGkar01nftKF5wRaqgwhgHmzPRE3r0NHs0zRE8tZhGQn iT3zk5SuixkZdlnW1ucngM1PbCVuieZYbuWqkZg= X-Google-Smtp-Source: AMrXdXtBdjMC2XbkCbg/sKxAYKrMMuQrVmVkCfTKgQdKmZ+HbnKyM9ffUAKFBpYnQwb9R5I/d32LLW0gc4vI7HYioOE= X-Received: by 2002:a65:6bc5:0:b0:478:31a5:3656 with SMTP id e5-20020a656bc5000000b0047831a53656mr3286091pgw.273.1673297736001; Mon, 09 Jan 2023 12:55:36 -0800 (PST) MIME-Version: 1.0 References: <20230103075603.12294-1-Kuan-Ying.Lee@mediatek.com> In-Reply-To: From: Andrey Konovalov Date: Mon, 9 Jan 2023 21:55:25 +0100 Message-ID: Subject: Re: [PATCH] kasan: infer the requested size by scanning shadow memory To: =?UTF-8?B?S3Vhbi1ZaW5nIExlZSAo5p2O5Yag56mOKQ==?= Cc: "linux-kernel@vger.kernel.org" , "linux-mediatek@lists.infradead.org" , =?UTF-8?B?UXVuLXdlaSBMaW4gKOael+e+pOW0tCk=?= , "linux-mm@kvack.org" , =?UTF-8?B?Q2hpbndlbiBDaGFuZyAo5by16Yym5paHKQ==?= , "dvyukov@google.com" , "kasan-dev@googlegroups.com" , "akpm@linux-foundation.org" , "ryabinin.a.a@gmail.com" , "linux-arm-kernel@lists.infradead.org" , "vincenzo.frascino@arm.com" , "glider@google.com" , "matthias.bgg@gmail.com" Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 17468A0016 X-Stat-Signature: j696mfczrcsr4s8sair6wzu3wet5y5t6 X-Rspam-User: X-HE-Tag: 1673297736-851660 X-HE-Meta: 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 3AaQO0k9 PfUrFvQ0pJv15qNFC6YZEb8SswwlfR3kjzEvcqnh521SBKWecVJRXP83n+2mnMy842eatxZJ+u7Oa20HUY05+qlM7W+yXbB7Chfm7Jw/xNEZluFo6BZ7InvcEn57JXRx8RhDfWubeZGAdRgE2GDyz+34YoaBkFPaoyBos X-Bogosity: Ham, tests=bogofilter, spamicity=0.000015, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Jan 9, 2023 at 6:02 AM Kuan-Ying Lee (=E6=9D=8E=E5=86=A0=E7=A9=8E) wrote: > > > Let's leave the first two lines as is, and instead change the second > > two lines to: > > > > The buggy address is located 0 bytes to the right of > > requested 184-byte region [ffff888017576600, ffff8880175766c0) > > Did you mean region [ffff888017576600, ffff8880175766b8)? Yes! Forgot to change the range. The idea is to refer to the requested size in these two lines of the report.