Re: [PATCH v2 14/36] x86/entry/64/compat: Disable SYSENTER and SYSCALL32 entries

From	Borislav Petkov <bp@alien8.de>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2 14/36] x86/entry/64/compat: Disable SYSENTER and SYSCALL32 entries
Date	2015-10-08 17:50 +0200
Message-ID	<qhlCa-7Qf-13@gated-at.bofh.it> (permalink)
References	<qgoC6-715-5@gated-at.bofh.it> <qgoLN-7cw-25@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Mon, Oct 05, 2015 at 05:48:02PM -0700, Andy Lutomirski wrote:
> We've disabled the vDSO helpers to call them, so turn off the
> entries entirely (temporarily) in preparation for cleaning them up.
> 
> Signed-off-by: Andy Lutomirski <luto@kernel.org>
> ---
>  arch/x86/entry/entry_64_compat.S | 13 +++++++++++++
>  1 file changed, 13 insertions(+)

What do we say for the case when someone bisects, lands at this patch
and, as Murphy would generally do it, has a reproducer which is calling
SYSENTER/SYSCALL32?

Tough luck?

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Thread

[PATCH v2 14/36] x86/entry/64/compat: Disable SYSENTER and SYSCALL32 entries Andy Lutomirski <luto@kernel.org> - 2015-10-06 03:00 +0200
  Re: [PATCH v2 14/36] x86/entry/64/compat: Disable SYSENTER and  SYSCALL32 entries Borislav Petkov <bp@alien8.de> - 2015-10-08 17:50 +0200
    Re: [PATCH v2 14/36] x86/entry/64/compat: Disable SYSENTER and  SYSCALL32 entries Andy Lutomirski <luto@amacapital.net> - 2015-10-09 21:20 +0200
  [tip:x86/asm] x86/entry/64/compat:   Disable SYSENTER and SYSCALL32 entries tip-bot for Andy Lutomirski <tipbot@zytor.com> - 2015-10-09 15:10 +0200

csiph-web