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: <CA+55aFx6Ade9UwDQ2KgsQgVMog+B9VXNYqrb1vm+EvBbkazhuA@mail.gmail.com>
Date:	Thu, 13 Aug 2015 15:54:47 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Denys Vlasenko <dvlasenk@...hat.com>,
	Kees Cook <keescook@...omium.org>,
	David Drysdale <drysdale@...gle.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 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?

                  Linus
--
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/