linux-kernel - Re: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline

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Message-ID: <alpine.LNX.2.00.1404030145490.32122@pobox.suse.cz>
Date:	Thu, 3 Apr 2014 01:47:00 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Mateusz Guzik <mguzik@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
	Ingo Molnar <mingo@...nel.org>, Mel Gorman <mgorman@...e.de>,
	Kay Sievers <kay@...y.org>
Subject: Re: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline

On Wed, 2 Apr 2014, Linus Torvalds wrote:

> > Could be done per-fd: put a struct ratelimit_state into struct
> > devkmsg_user.
> 
> Yeah, what Andrew said. My suggestion of per-task or per-cred is
> obviously moronic in comparison.

Which doesn't really protect you from tasks that do open()/write()/close() 
cycle for /dev/kmsg write every 2ms though.

-- 
Jiri Kosina
SUSE Labs
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