linux-kernel - Re: [PATCH v2] sched: taint kernel with TAINT

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Message-ID: <1337331254.573.1.camel@twins>
Date:	Fri, 18 May 2012 10:54:14 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] sched: taint kernel with TAINT_WARN after
 sleep-in-atomic bug

On Thu, 2012-05-10 at 16:20 +0400, Konstantin Khlebnikov wrote:
> Usually sleep-in-atomic bugs are followed by dozens other warnings.
> This patch should help to figure out original source of problem.
> 
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>

Thanks!

> ---
>  kernel/sched/core.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index 0533a68..b6458e4 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -3113,6 +3113,7 @@ static noinline void __schedule_bug(struct task_struct *prev)
>  	if (irqs_disabled())
>  		print_irqtrace_events(prev);
>  	dump_stack();
> +	add_taint(TAINT_WARN);
>  }
>  
>  /*
> 

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