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From: Casey Schaufler <casey@schaufler-ca.com>
To: James Morris <jmorris@namei.org>
Cc: "Joel Fernandes (Google)" <joel@joelfernandes.org>,
	linux-kernel@vger.kernel.org,
	Peter Zijlstra <peterz@infradead.org>,
	rostedt@goodmis.org, primiano@google.com, rsavitski@google.com,
	jeffv@google.com, kernel-team@android.com,
	Alexei Starovoitov <ast@kernel.org>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	bpf@vger.kernel.org, Daniel Borkmann <daniel@iogearbox.net>,
	Ingo Molnar <mingo@redhat.com>, Jiri Olsa <jolsa@redhat.com>,
	Kees Cook <keescook@chromium.org>,
	linux-security-module@vger.kernel.org,
	Matthew Garrett <matthewgarrett@google.com>,
	Namhyung Kim <namhyung@kernel.org>,
	selinux@vger.kernel.org, Song Liu <songliubraving@fb.com>,
	"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
	<x86@kernel.org>, Yonghong Song <yhs@fb.com>,
	casey@schaufler-ca.com
Subject: Re: [PATCH RFC] perf_event: Add support for LSM and SELinux checks
Date: Thu, 10 Oct 2019 11:12:19 -0700
Message-ID: <dc0cacef-fff5-b837-97a4-ed7336934bf6@schaufler-ca.com> (raw)
In-Reply-To: <alpine.LRH.2.21.1910101343470.8343@namei.org>

On 10/9/2019 7:44 PM, James Morris wrote:
> On Wed, 9 Oct 2019, Casey Schaufler wrote:
>
>> On 10/9/2019 3:14 PM, James Morris wrote:
>>> On Wed, 9 Oct 2019, Casey Schaufler wrote:
>>>
>>>> Please consider making the perf_alloc security blob maintained
>>>> by the infrastructure rather than the individual modules. This
>>>> will save it having to be changed later.
>>> Is anyone planning on using this with full stacking?
>>>
>>> If not, we don't need the extra code & complexity. Stacking should only 
>>> cover what's concretely required by in-tree users.
>> I don't believe it's any simpler for SELinux to do the allocation
>> than for the infrastructure to do it. I don't see anyone's head
>> exploding over the existing infrastructure allocation of blobs.
>> We're likely to want it at some point, so why not avoid the hassle
>> and delay by doing it the "new" way up front?
> Because it is not necessary.

The logic escapes me, but OK.


  reply index

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 20:36 Joel Fernandes (Google)
2019-10-09 21:55 ` Casey Schaufler
2019-10-09 22:14   ` James Morris
2019-10-09 22:41     ` Casey Schaufler
2019-10-10  0:40       ` Joel Fernandes
2019-10-10  0:53         ` Casey Schaufler
2019-10-10  2:44       ` James Morris
2019-10-10 18:12         ` Casey Schaufler [this message]
2019-10-10 19:41           ` James Morris
2019-10-09 22:11 ` James Morris
2019-10-10  0:43   ` Joel Fernandes
2019-10-10  7:23 ` Alexey Budankov
2019-10-10  8:12 ` Peter Zijlstra
2019-10-10 15:13   ` Joel Fernandes
2019-10-10 17:09     ` Peter Zijlstra
2019-10-10 18:31       ` Joel Fernandes
2019-10-11  7:05         ` Peter Zijlstra
2019-10-11 15:47           ` Joel Fernandes

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