From: Joerg Roedel <joro@8bytes.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Mateusz Guzik <mguzik@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Steven Rostedt <rostedt@goodmis.org>,
LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
Ingo Molnar <mingo@kernel.org>, Mel Gorman <mgorman@suse.de>,
Kay Sievers <kay@vrfy.org>
Subject: Re: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline
Date: Thu, 3 Apr 2014 12:43:08 +0200 [thread overview]
Message-ID: <20140403104308.GP13491@8bytes.org> (raw)
In-Reply-To: <CA+55aFyphF8kd4OwWdar4p5M1=Sxc54sfk0RWFPpO6zrezZwJA@mail.gmail.com>
On Wed, Apr 02, 2014 at 06:47:57PM -0700, Linus Torvalds wrote:
> Whether it actually fixes the problem that Borislav had is
> questionable, of course. For all I know, systemd debug mode generates
> so much data in *other* ways and then causes feedback loops with the
> kernel debugging that this patch is totally immaterial, and dmesg was
> never the main issue. But unlike the "hide 'debug' from
> /proc/cmdline", I think this patch at least _conceptually_ makes a lot
> of sense, even if systemd gets fixed, so ...
How about just ignoring writes to /dev/kmsg altogether by default
(unless explicitly enabled in Kconfig or on the kernel cmdline)? Maybe I
am missing something but what are the legitimate use-cases for generally
allowing user-space to write into the kernel-log?
Joerg
next prev parent reply other threads:[~2014-04-03 10:43 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-02 18:42 [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline Steven Rostedt
2014-04-02 18:57 ` Linus Torvalds
2014-04-02 19:04 ` Andrew Morton
2014-04-02 19:05 ` Borislav Petkov
2014-04-02 19:08 ` Randy Dunlap
2014-04-02 19:50 ` Thomas Gleixner
2014-04-02 20:05 ` Richard Weinberger
2014-04-02 20:43 ` Thomas Gleixner
2014-04-02 22:18 ` Greg KH
2014-04-02 19:08 ` Borislav Petkov
2014-04-02 19:33 ` Steven Rostedt
2014-04-02 22:12 ` Mateusz Guzik
2014-04-02 22:30 ` David Daney
2014-04-02 22:37 ` Greg KH
2014-04-02 23:13 ` Linus Torvalds
2014-04-02 23:23 ` Jiri Kosina
2014-04-02 23:28 ` Andrew Morton
2014-04-02 23:42 ` Linus Torvalds
2014-04-02 23:47 ` Jiri Kosina
2014-04-02 23:52 ` Linus Torvalds
2014-04-02 23:57 ` Jiri Kosina
2014-04-03 1:38 ` Steven Rostedt
2014-04-03 1:47 ` Linus Torvalds
2014-04-03 9:03 ` Borislav Petkov
2014-04-03 10:43 ` Joerg Roedel [this message]
2014-04-03 17:05 ` Theodore Ts'o
2014-04-03 17:09 ` H. Peter Anvin
2014-04-03 17:18 ` Theodore Ts'o
2014-04-03 19:19 ` H. Peter Anvin
2014-04-04 18:21 ` Andy Lutomirski
2014-04-04 18:32 ` Linus Torvalds
2014-04-04 18:57 ` Andy Lutomirski
2014-04-04 19:09 ` Linus Torvalds
2014-04-04 21:17 ` John Stoffel
2014-04-04 23:17 ` Greg Kroah-Hartman
2014-04-05 14:37 ` John Stoffel
2014-04-05 23:23 ` Theodore Ts'o
2014-04-04 18:42 ` Linus Torvalds
2014-04-04 18:51 ` Andrew Morton
2014-04-04 18:57 ` Linus Torvalds
2014-04-06 20:49 ` David Timothy Strauss
2014-05-06 9:38 ` Felipe Contreras
2014-04-04 19:44 ` Steven Rostedt
2014-04-04 20:17 ` Theodore Ts'o
2014-04-04 22:45 ` Alexei Starovoitov
2014-04-04 22:48 ` Linus Torvalds
2014-04-04 19:00 ` Andy Lutomirski
2014-04-03 11:23 ` Borislav Petkov
2014-04-03 11:38 ` Ingo Molnar
2014-04-15 7:26 ` Borislav Petkov
2014-04-03 10:34 ` Måns Rullgård
2014-04-03 11:03 ` Borislav Petkov
2014-04-06 17:19 ` One Thousand Gnomes
2014-05-06 9:47 ` Felipe Contreras
2014-04-02 23:47 ` Joe Perches
2014-04-02 23:31 ` Linus Torvalds
2014-04-03 11:25 ` Måns Rullgård
2014-04-03 15:17 ` Tim Bird
2014-04-03 18:06 ` Greg Kroah-Hartman
2014-05-06 9:35 ` Felipe Contreras
2014-04-07 4:54 ` Rusty Russell
2014-05-02 22:34 ` Andrew Morton
2014-05-05 2:17 ` Rusty Russell
2014-05-05 13:15 ` Randy Dunlap
2014-05-06 0:57 ` Rusty Russell
2014-05-19 8:06 ` Diego Viola
2014-05-19 8:11 ` Diego Viola
2014-05-19 14:40 ` Randy Dunlap
2014-05-20 1:26 ` Rusty Russell
2014-05-20 6:26 ` Diego Viola
2014-05-21 1:52 ` Rusty Russell
2014-04-03 0:49 ` Steven Rostedt
-- strict thread matches above, loose matches on Subject: below --
2014-04-23 15:15 Borislav Petkov
2014-04-23 20:44 ` Borislav Petkov
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