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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAHse=S_TcuCC8jREskuvghL_C_DvqLFfp2j1RCASFUMT+QNKBA@mail.gmail.com>
Date:	Fri, 14 Aug 2015 08:33:03 +0100
From:	David Drysdale <drysdale@...gle.com>
To:	Kees Cook <keescook@...omium.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy Lutomirski <luto@...capital.net>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Will Drewry <wad@...omium.org>, Ingo Molnar <mingo@...nel.org>,
	Alok Kataria <akataria@...are.com>,
	Borislav Petkov <bp@...en8.de>,
	Alexei Starovoitov <ast@...mgrid.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, Oleg Nesterov <oleg@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>, X86 ML <x86@...nel.org>
Subject: Re: [Regression v4.2 ?] 32-bit seccomp-BPF returned errno values
 wrong in VM?

On Thu, Aug 13, 2015 at 11:56 PM, Kees Cook <keescook@...omium.org> wrote:
> On Thu, Aug 13, 2015 at 3:54 PM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
>> On Thu, Aug 13, 2015 at 3:49 PM, Linus Torvalds
>> <torvalds@...ux-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.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/