From: Ben Hutchings <ben@decadent.org.uk>
To: Steven Rostedt <rostedt@goodmis.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Matthew Garrett <matthewgarrett@google.com>,
James Morris James Morris <jmorris@namei.org>,
LSM List <linux-security-module@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: [PATCH] tracefs: Do not allocate and free proxy_ops for lockdown
Date: Fri, 11 Oct 2019 20:50:56 +0100 [thread overview]
Message-ID: <c327ecb762ef788ef248ed5c006eeef5afa3b798.camel@decadent.org.uk> (raw)
In-Reply-To: <20191011143610.21bcd9c0@gandalf.local.home>
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On Fri, 2019-10-11 at 14:36 -0400, Steven Rostedt wrote:
> On Fri, 11 Oct 2019 11:20:30 -0700
> Linus Torvalds <torvalds@linux-foundation.org> wrote:
>
> > Willing to do that instead?
>
> Honestly, what you described was my preferred solution ;-)
>
> I just didn't want to upset the lockdown crowd if a new tracefs file
> was opened without doing this.
>
> Once locked down is set, can it ever be undone without rebooting?
[...]
Earlier versions of the lockdown patch set added a magic SysRq command
to turn it off. That's not currently present upstream but there may be
plans to add it.
Ben.
--
Ben Hutchings
It is easier to change the specification to fit the program
than vice versa.
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next prev parent reply other threads:[~2019-10-11 19:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-11 17:54 [PATCH] tracefs: Do not allocate and free proxy_ops for lockdown Steven Rostedt
2019-10-11 18:20 ` Linus Torvalds
2019-10-11 18:36 ` Steven Rostedt
2019-10-11 19:24 ` Linus Torvalds
2019-10-11 19:50 ` Ben Hutchings [this message]
2019-10-11 21:46 ` Florian Weimer
2019-10-11 22:27 ` Steven Rostedt
2019-10-11 20:25 ` Steven Rostedt
2019-10-11 20:46 ` Linus Torvalds
2019-10-11 21:08 ` Steven Rostedt
2019-10-11 20:54 ` Steven Rostedt
2019-10-11 21:00 ` Linus Torvalds
2019-10-11 21:11 ` Steven Rostedt
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