linux-kernel - Re: [PATCH v2] printk: Add kernel parameter to disable writes to /dev/kmsg

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Message-ID: <87eg9t5v59.fsf@tassilo.jf.intel.com>
Date:	Mon, 25 Apr 2016 12:46:26 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Subject: Re: [PATCH v2] printk: Add kernel parameter to disable writes to /dev/kmsg

Steven Rostedt <rostedt@...dmis.org> writes:

> Over the weekend my server was acting funny. The display wasn't working
> well, and I assumed that a driver was going bad. I went to look at the
> kernel dmesg, but the buffer only had the following over and over:

You may also like

https://lkml.org/lkml/2016/4/9/70

Otherwise if you use Chrome the logs totally get spammed every time
you open a new tab. This was the number one log spam cause on my
system.

Unfortunately the audit maintainers totally fail to recognize this
as a fatal flaw :-(

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only