linux-kernel - Re: [sched] WARNING: CPU: 0 PID: 3166 at kernel/cpu.c:84 put_online

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Message-ID: <20131022204659.GE2490@laptop.programming.kicks-ass.net>
Date:	Tue, 22 Oct 2013 22:46:59 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michael wang <wangyun@...ux.vnet.ibm.com>
Cc:	Fengguang Wu <fengguang.wu@...el.com>,
	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [sched] WARNING: CPU: 0 PID: 3166 at kernel/cpu.c:84
 put_online_cpus()

On Mon, Oct 21, 2013 at 11:28:30AM +0800, Michael wang wrote:
> Hi, Fengguang
> 
> On 10/19/2013 08:51 AM, Fengguang Wu wrote:
> > Greetings,
> 
> Will this do any helps?
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index c06b8d3..7c61f31 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -3716,7 +3716,6 @@ long sched_setaffinity(pid_t pid, const struct
> cpumask *in_mask)
>         p = find_process_by_pid(pid);
>         if (!p) {
>                 rcu_read_unlock();
> -               put_online_cpus();
>                 return -ESRCH;
>         }

Just so..
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