linux-kernel - Re: [PATCH 3/5] x86/vsyscall: Document odd #PF's error code for vsyscalls

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Message-ID: <CALCETrVOzGCN+pjgsdd+x3APsrSGJzngfGeSWvqWy=XTQj3EiA@mail.gmail.com>
Date:   Thu, 13 Jun 2019 12:07:40 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Andy Lutomirski <luto@...nel.org>, X86 ML <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 3/5] x86/vsyscall: Document odd #PF's error code for vsyscalls

On Mon, Jun 10, 2019 at 1:40 PM Kees Cook <keescook@...omium.org> wrote:
>
> On Mon, Jun 10, 2019 at 01:25:29PM -0700, Andy Lutomirski wrote:
> >  tools/testing/selftests/x86/test_vsyscall.c | 9 ++++++++-
>
> Did this hunk end up in the wrong patch? (It's not mentioned in the
> commit log and the next patch has other selftest changes...)
>

It was intentional -- you can run the improved selftest and observe
the oddity for yourself :)  I'll improve the changelog.