linux-kernel - Re: [tip:sched/core] sched: Set TAINT_UNSAFE

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Date:	Fri, 18 May 2012 13:02:54 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	mingo@...nel.org, hpa@...or.com, linux-kernel@...r.kernel.org,
	rdunlap@...otime.net, akpm@...ux-foundation.org,
	khlebnikov@...nvz.org, tglx@...utronix.de
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:sched/core] sched: Set TAINT_UNSAFE_SMP after
 sleep-in-atomic bug

On Fri, 2012-05-18 at 03:48 -0700, tip-bot for Konstantin Khlebnikov
wrote:
> Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

This is the patch I objected to.. 

> +++ b/kernel/sched/core.c
> @@ -3138,6 +3138,7 @@ static noinline void __schedule_bug(struct task_struct *prev)
>  	if (irqs_disabled())
>  		print_irqtrace_events(prev);
>  	dump_stack();
> +	add_taint(TAINT_UNSAFE_SMP);
>  }

This should very much be TAINT_WARN.. it has nothing what so ever to do
with SMP.
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