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From:   Andrey Konovalov <andreyknvl@google.com>
Date:   Fri, 29 Jun 2018 17:20:42 +0200
Message-ID: <CAAeHK+yP=oS6EP4g0jqvLSp_=n_Go8WyhJDS-BegJFCWFbAUiw@mail.gmail.com>
Subject: Re: [PATCH v4 0/7] arm64: untag user pointers passed to the kernel
To:     Catalin Marinas <catalin.marinas@arm.com>
Cc:     Will Deacon <will.deacon@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Kees Cook <keescook@chromium.org>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Ingo Molnar <mingo@kernel.org>,
        "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
        Shuah Khan <shuah@kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        linux-doc@vger.kernel.org,
        Linux Memory Management List <linux-mm@kvack.org>,
        linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>,
        Chintan Pandya <cpandya@codeaurora.org>,
        Jacob Bramley <Jacob.Bramley@arm.com>,
        Ruben Ayrapetyan <Ruben.Ayrapetyan@arm.com>,
        Lee Smith <Lee.Smith@arm.com>,
        Kostya Serebryany <kcc@google.com>,
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        Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>,
        Evgeniy Stepanov <eugenis@google.com>
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On Fri, Jun 29, 2018 at 5:19 PM, Andrey Konovalov <andreyknvl@google.com> wrote:
> a bunch of compat
> a bunch of ioctl that use ptr to stored ints
>
> ipc/shm.c:1355
> ipc/shm.c:1566
>
> mm/process_vm_access.c:178:20
> mm/process_vm_access.c:180:19
> substraction => harmless
>
> mm/process_vm_access.c:221:4
> ?
>
> mm/memory.c:4679:14
> should be __user pointer
>
> fs/fuse/file.c:1256:9
> ?
>
> kernel/kthread.c:73:9
> ?
>
> mm/migrate.c:1586:10
> mm/migrate.c:1660:24
>
> lib/iov_iter.c
> ???
>
> kernel/futex.c:502
> uses user addr as key
>
> kernel/futex.c:730
> gup, fixed
>
> lib/strncpy_from_user.c:110:13
> fixed?
>
> lib/strnlen_user.c:112
> fixed?
>
> fs/readdir.c:369
> ???

Started looking at the results and accidentally posted my notes.
Ignore this for now, will post when done.