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Message-ID: <20170516144104.GA8621@pathway.suse.cz>
Date: Tue, 16 May 2017 16:41:04 +0200
From: Petr Mladek <pmladek@...e.com>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: kernel-hardening@...ts.openwall.com,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
linux-kernel@...r.kernel.org,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
Steven Rostedt <rostedt@...dmis.org>,
William Roberts <william.c.roberts@...el.com>,
Chris Fries <cfries@...gle.com>, Dave Weinstein <olorin@...gle.com>
Subject: Re: [RFC 5/6] lib: vsprintf: Add "%paP", "%padP" options
On Fri 2017-05-05 21:07:47, Greg KH wrote:
> From: Chris Fries <cfries@...gle.com>
>
> Add %paP and %padP for physical address that need to always be shown
> regardless of kptr restrictions.
>
> Cc: William Roberts <william.c.roberts@...el.com>
> Cc: Dave Weinstein <olorin@...gle.com>
> Signed-off-by: Chris Fries <cfries@...gle.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
> Documentation/printk-formats.txt | 10 ++++++----
> lib/vsprintf.c | 12 +++++++++---
> 2 files changed, 15 insertions(+), 7 deletions(-)
This patch should update also the section about
kptr_restrict in Documentation/sysctl/kernel.txt.
It should mention that the trailing P allows to see
pointers also for %pa, and %p[rR] formats when
the level is 4.
Best Regards,
Petr
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