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Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values wrong in VM?

From David Drysdale <drysdale@google.com>
Newsgroups linux.kernel
Subject Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values wrong in VM?
Date 2015-08-14 09:40 +0200
Message-ID <pXhKN-3Sy-7@gated-at.bofh.it> (permalink)
References (6 earlier) <pX8oa-7bD-11@gated-at.bofh.it> <pX8xQ-7ln-21@gated-at.bofh.it> <pX9Dz-q0-7@gated-at.bofh.it> <pX9DA-q0-9@gated-at.bofh.it> <pX9Dz-q0-5@gated-at.bofh.it>
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On Thu, Aug 13, 2015 at 11:56 PM, Kees Cook <keescook@chromium.org> wrote:
> On Thu, Aug 13, 2015 at 3:54 PM, Linus Torvalds
> <torvalds@linux-foundation.org> wrote:
>> On Thu, Aug 13, 2015 at 3:49 PM, Linus Torvalds
>> <torvalds@linux-foundation.org> wrote:
>>>
>>> Does the attached patch make sense and work?
>>
>> Btw, I'm not all that happy with it anyway.
>>
>> I still think Denys' patch also potentially changed what audit and
>> strace see for %rax in the pt_regs to -ENOSYS, which I'm not convinced
>> is a good change.
>>
>> But maybe that three-liner patch fixes the immediate problem that
>> David sees. David?
>
> Your patch fixes it for me. The seccomp compat selftests pass again
> with audit enabled.
>
> -Kees

Yep, that patch fixes it for me too.
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[Regression v4.2 ?] 32-bit seccomp-BPF returned errno values wrong in VM? David Drysdale <drysdale@google.com> - 2015-08-13 10:40 +0200
  Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Denys Vlasenko <dvlasenk@redhat.com> - 2015-08-13 17:20 +0200
    Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? David Drysdale <drysdale@google.com> - 2015-08-13 18:30 +0200
      Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Andy Lutomirski <luto@amacapital.net> - 2015-08-13 19:20 +0200
        Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? David Drysdale <drysdale@google.com> - 2015-08-13 19:50 +0200
          Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Kees Cook <keescook@chromium.org> - 2015-08-13 20:50 +0200
            Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Denys Vlasenko <dvlasenk@redhat.com> - 2015-08-13 23:40 +0200
              Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Andy Lutomirski <luto@amacapital.net> - 2015-08-13 23:50 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Kees Cook <keescook@chromium.org> - 2015-08-14 01:00 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Andy Lutomirski <luto@amacapital.net> - 2015-08-14 01:10 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Kees Cook <keescook@chromium.org> - 2015-08-14 01:20 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-14 01:40 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Denys Vlasenko <dvlasenk@redhat.com> - 2015-08-14 14:00 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Andy Lutomirski <luto@amacapital.net> - 2015-08-14 16:30 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? David Drysdale <drysdale@google.com> - 2015-08-14 09:40 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-14 01:00 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Andy Lutomirski <luto@amacapital.net> - 2015-08-14 01:00 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-14 01:30 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-14 01:00 +0200
              Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-14 00:30 +0200
                Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values  wrong in VM? Denys Vlasenko <dvlasenk@redhat.com> - 2015-08-14 13:30 +0200

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