linux-kernel - Re: [PATCH v8 06/14] task_isolation: provide strict mode configurable signal

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Message-ID: <20151020205610.51b3d742@grimm.local.home>
Date:	Tue, 20 Oct 2015 20:56:10 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Chris Metcalf <cmetcalf@...hip.com>
Cc:	Gilad Ben Yossef <giladb@...hip.com>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rik van Riel" <riel@...hat.com>, Tejun Heo <tj@...nel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Christoph Lameter <cl@...ux.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Andy Lutomirski <luto@...capital.net>,
	<linux-doc@...r.kernel.org>, <linux-api@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 06/14] task_isolation: provide strict mode
 configurable signal

On Tue, 20 Oct 2015 16:36:04 -0400
Chris Metcalf <cmetcalf@...hip.com> wrote:

> Allow userspace to override the default SIGKILL delivered
> when a task_isolation process in STRICT mode does a syscall
> or otherwise synchronously enters the kernel.
> 

Is this really a good idea? This means that there's no way to terminate
a task in this mode, even if it goes astray.

-- Steve
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