linux-kernel - Re: [PATCH 04/17] x86, mpx: trace entry to bounds exception paths

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: <20150327120218.GB18927@pd.tnic>
Date:	Fri, 27 Mar 2015 13:02:18 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Dave Hansen <dave@...1.net>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
	dave.hansen@...ux.intel.com
Subject: Re: [PATCH 04/17] x86, mpx: trace entry to bounds exception paths

On Thu, Mar 26, 2015 at 11:33:38AM -0700, Dave Hansen wrote:
> 
> From: Dave Hansen <dave.hansen@...ux.intel.com>
> 
> There are two basic things that can happen as the result of
> a bounds exception (#BR):
> 
> 	1. We allocate a new bounds table
> 	2. We pass up a bounds exception to userspace.
> 
> This patch adds a trace points for the case where we are

                  a tracepoint

> passing the exception up to userspace with a signal.
> 
> We are also explicit that we're printing out the inverse of
> the 'upper' that we encounter.  If you want to filter, for
> instance, you need to ~ the value first.

			negate
> 
> Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>
> ---
> 
>  b/arch/x86/include/asm/trace/mpx.h |   25 +++++++++++++++++++++++++
>  b/arch/x86/mm/mpx.c                |    2 ++
>  2 files changed, 27 insertions(+)

...

-- 
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@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/