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

From: David Drysdale
Date: Fri Aug 14 2015 - 03:33:28 EST

On Thu, Aug 13, 2015 at 11:56 PM, Kees Cook <keescook@xxxxxxxxxxxx> wrote:
> On Thu, Aug 13, 2015 at 3:54 PM, Linus Torvalds
> <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>> On Thu, Aug 13, 2015 at 3:49 PM, Linus Torvalds
>> <torvalds@xxxxxxxxxxxxxxxxxxxx> 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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