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Date:   Fri, 21 Aug 2020 02:35:10 +0200
From:   Thomas Gleixner <>
To:     Kees Cook <>
Cc:     Kyle Huey <>,
        Robert O'Callahan <>,
        LKML <>,
        "maintainer\:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)" <>,, Will Deacon <>,
        Arnd Bergmann <>,
        Mark Rutland <>,
        Keno Fischer <>,
        Paolo Bonzini <>,
        kvm list <>,
        Gabriel Krisman Bertazi <>,
        Sean Christopherson <>
Subject: Re: [REGRESSION] x86/entry: Tracer no longer has opportunity to change the syscall number at entry via orig_ax

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.



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