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

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Message-ID: <CA+55aFy8vLnKqxV1WSpPq1Ztg0CsgWvT+kMLMJ+83C7CZTMOFQ@mail.gmail.com>
Date:	Mon, 25 Apr 2016 13:45:25 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
	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

On Mon, Apr 25, 2016 at 1:34 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
>
> There's a bug somewhere with mine:
>
> # journalctl -k
> No journal files were found.
> -- No entries --

Is that with your patch? If you don't allow kmsg open, maybe systemd
doesn't end up logging for reads either?

That said, the worst part of systemd by far is the insane binary
logging crap, and I would not be surprised if you have scrogged logs.

Quite frankly, everything else in systemd at least has an _excuse_ for
it. The binary logging is a pile of unadulterated shit.

                  Linus