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From: Thomas Gleixner <tglx@linutronix.de>
To: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: WARNING: at kernel/cpu/idle.c:96
Date: Thu, 2 May 2013 12:43:19 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.2.02.1305021242180.3972@ionos> (raw)
In-Reply-To: <20130430155203.GA512@x4>

On Tue, 30 Apr 2013, Markus Trippelsdorf wrote:

> Just booted todays git tree and got the following warning:
> 
> ------------[ cut here ]------------
> WARNING: at kernel/cpu/idle.c:96 cpu_startup_entry+0x14d/0x160()
> Hardware name: System Product Name
> Pid: 0, comm: swapper/2 Not tainted 3.9.0-03462-gab86e97-dirty #424
> Call Trace:
> smpboot: Booting Node   0, Processors  #1 #2
>  [<ffffffff8105b7c0>] ? warn_slowpath_common+0x60/0xa0
>  [<ffffffff8108c26d>] ? cpu_startup_entry+0x14d/0x160
> ---[ end trace 40a24a5550891913 ]---

Fix below.

Thanks,

	tglx

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 607af0d..e4cd638 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -312,6 +312,8 @@ void arch_cpu_idle(void)
 {
 	if (cpuidle_idle_call())
 		x86_idle();
+	else
+		local_irq_enable();
 }
 
 /*

  reply	other threads:[~2013-05-02 10:43 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-30 15:52 WARNING: at kernel/cpu/idle.c:96 Markus Trippelsdorf
2013-05-02 10:43 ` Thomas Gleixner [this message]
2013-05-02 11:30   ` Markus Trippelsdorf
2013-05-02 13:58     ` Thomas Gleixner
2013-05-02 14:06       ` Markus Trippelsdorf
2013-05-07 14:04         ` Borislav Petkov
2013-05-07 14:32       ` [tip:x86/urgent] x86: Fix idle consolidation fallout tip-bot for Thomas Gleixner

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