Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Thomas Gleixner <tglx@linutronix.de>
To:     Kees Cook <keescook@chromium.org>
Cc:     Kyle Huey <me@kylehuey.com>,
        Robert O'Callahan <rocallahan@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        "maintainer\:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)" <x86@kernel.org>,
        linux-arch@vger.kernel.org, Will Deacon <will@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Mark Rutland <mark.rutland@arm.com>,
        Keno Fischer <keno@juliacomputing.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        kvm list <kvm@vger.kernel.org>,
        Gabriel Krisman Bertazi <krisman@collabora.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>
Subject: Re: [REGRESSION] x86/entry: Tracer no longer has opportunity to change the syscall number at entry via orig_ax
In-Reply-To: <202008201404.6A0D5736@keescook>
References: <CAP045Arc1Vdh+n2j2ELE3q7XfagLjyqXji9ZD0jqwVB-yuzq-g@mail.gmail.com> <87blj6ifo8.fsf@nanos.tec.linutronix.de> <202008201404.6A0D5736@keescook>
Date:   Fri, 21 Aug 2020 02:35:10 +0200
Message-ID: <87364gj0ox.fsf@nanos.tec.linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, Aug 20 2020 at 14:09, Kees Cook wrote:
> On Wed, Aug 19, 2020 at 09:44:39PM +0200, Thomas Gleixner wrote:
>> My fault and I have no idead why none of the silly test cases
>> noticed. Fix below.
>
> Hmm, which were you trying? Looking just now, I see that the seccomp
> selftests were failing for all their syscall-changing tests.

/me feels stupid

It's probably all caused by the heat wave which made my brain operate
outside of the specified temperature range.

Thanks,

        tglx