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Message-ID: <CAHk-=wgwdHzOY_mT3y9gDHSMXZ8Xb5OYrK40-u9uRXLv25fNPA@mail.gmail.com> Date: Tue, 17 Oct 2023 09:54:35 -0700 From: Linus Torvalds <torvalds@...ux-foundation.org> To: jeffxu@...omium.org Cc: akpm@...ux-foundation.org, keescook@...omium.org, jannh@...gle.com, sroettger@...gle.com, willy@...radead.org, gregkh@...uxfoundation.org, jeffxu@...gle.com, jorgelo@...omium.org, groeck@...omium.org, linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, linux-mm@...ck.org, surenb@...gle.com, alex.sierra@....com, apopple@...dia.com, aneesh.kumar@...ux.ibm.com, axelrasmussen@...gle.com, ben@...adent.org.uk, catalin.marinas@....com, david@...hat.com, dwmw@...zon.co.uk, ying.huang@...el.com, hughd@...gle.com, joey.gouly@....com, corbet@....net, wangkefeng.wang@...wei.com, Liam.Howlett@...cle.com, lstoakes@...il.com, mawupeng1@...wei.com, linmiaohe@...wei.com, namit@...are.com, peterx@...hat.com, peterz@...radead.org, ryan.roberts@....com, shr@...kernel.io, vbabka@...e.cz, xiujianfeng@...wei.com, yu.ma@...el.com, zhangpeng362@...wei.com, dave.hansen@...el.com, luto@...nel.org, linux-hardening@...r.kernel.org Subject: Re: [RFC PATCH v2 5/8] mseal: Check seal flag for munmap(2) On Tue, 17 Oct 2023 at 02:08, <jeffxu@...omium.org> wrote: > > Of all the call paths that call into do_vmi_munmap(), > this is the only place where checkSeals = MM_SEAL_MUNMAP. > The rest has checkSeals = 0. Why? None of this makes sense. So you say "we can't munmap in this *one* place, but all others ignore the sealing". Crazy. Linus
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