Add clockevents oops fix
This commit is contained in:
Josh Boyer
parent
731965305f
commit
673593a404
129
tglx.patch
Normal file
129
tglx.patch
Normal file
@ -0,0 +1,129 @@
|
|||||||
|
|
||||||
|
Delivered-To: jwboyer@gmail.com
|
||||||
|
Received: by 10.76.92.6 with SMTP id ci6csp75137oab;
|
||||||
|
Fri, 3 May 2013 11:33:29 -0700 (PDT)
|
||||||
|
X-Received: by 10.66.146.74 with SMTP id ta10mr15901145pab.60.1367606009492;
|
||||||
|
Fri, 03 May 2013 11:33:29 -0700 (PDT)
|
||||||
|
Return-Path: <linux-kernel-owner@vger.kernel.org>
|
||||||
|
Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67])
|
||||||
|
by mx.google.com with ESMTP id h1si8624725pad.114.2013.05.03.11.33.22
|
||||||
|
for <multiple recipients>;
|
||||||
|
Fri, 03 May 2013 11:33:29 -0700 (PDT)
|
||||||
|
Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
|
||||||
|
Authentication-Results: mx.google.com;
|
||||||
|
spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mail=linux-kernel-owner@vger.kernel.org
|
||||||
|
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
|
||||||
|
id S1763285Ab3ECSdI (ORCPT <rfc822;kernelandme@gmail.com>
|
||||||
|
+ 99 others); Fri, 3 May 2013 14:33:08 -0400
|
||||||
|
Received: from www.linutronix.de ([62.245.132.108]:46407 "EHLO
|
||||||
|
Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
|
||||||
|
with ESMTP id S1759070Ab3ECSdH (ORCPT
|
||||||
|
<rfc822;linux-kernel@vger.kernel.org>);
|
||||||
|
Fri, 3 May 2013 14:33:07 -0400
|
||||||
|
Received: from localhost ([127.0.0.1])
|
||||||
|
by Galois.linutronix.de with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)
|
||||||
|
(Exim 4.72)
|
||||||
|
(envelope-from <tglx@linutronix.de>)
|
||||||
|
id 1UYKmx-0005xg-JP; Fri, 03 May 2013 20:32:59 +0200
|
||||||
|
Date: Fri, 3 May 2013 20:32:58 +0200 (CEST)
|
||||||
|
From: Thomas Gleixner <tglx@linutronix.de>
|
||||||
|
To: Dave Jones <davej@redhat.com>
|
||||||
|
cc: Yinghai Lu <yinghai@kernel.org>,
|
||||||
|
Linux Kernel <linux-kernel@vger.kernel.org>
|
||||||
|
Subject: Re: clockevents_program_event WARN_ON preventing boot.
|
||||||
|
In-Reply-To: <20130503144912.GB1283@redhat.com>
|
||||||
|
Message-ID: <alpine.LFD.2.02.1305032015060.2990@ionos>
|
||||||
|
References: <20130430212007.GB18598@redhat.com> <20130430213719.GA14988@redhat.com> <alpine.LFD.2.02.1305021234510.3972@ionos> <20130502154621.GA23990@redhat.com> <alpine.LFD.2.02.1305022152280.2891@ionos> <CAE9FiQXpV451xTzAJyNdC-+-oqF9v8Cy5evcNOHKFffERw2SwA@mail.gmail.com>
|
||||||
|
<alpine.LFD.2.02.1305022304370.2891@ionos> <CAE9FiQWFK_ropzW_qQLcNxLYyek8-PHGW-8SxfZJSijvdrss1A@mail.gmail.com> <alpine.LFD.2.02.1305022337470.2891@ionos> <20130503144912.GB1283@redhat.com>
|
||||||
|
User-Agent: Alpine 2.02 (LFD 1266 2009-07-14)
|
||||||
|
MIME-Version: 1.0
|
||||||
|
Content-Type: TEXT/PLAIN; charset=US-ASCII
|
||||||
|
X-Linutronix-Spam-Score: -1.0
|
||||||
|
X-Linutronix-Spam-Level: -
|
||||||
|
X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001
|
||||||
|
Sender: linux-kernel-owner@vger.kernel.org
|
||||||
|
Precedence: bulk
|
||||||
|
List-ID: <linux-kernel.vger.kernel.org>
|
||||||
|
X-Mailing-List: linux-kernel@vger.kernel.org
|
||||||
|
|
||||||
|
On Fri, 3 May 2013, Dave Jones wrote:
|
||||||
|
> On Fri, May 03, 2013 at 12:49:20AM +0200, Thomas Gleixner wrote:
|
||||||
|
>
|
||||||
|
> > I'm fundamentally confused and Daves observation about slub debug does
|
||||||
|
> > not make it less confusing.
|
||||||
|
> >
|
||||||
|
> > It'd be nice if you could add some more instrumentation or bisect the
|
||||||
|
> > issue.
|
||||||
|
>
|
||||||
|
> Here's what I ended up with..
|
||||||
|
> b352bc1cbc29134a356b5c16ee2281807a7b984e is the first bad commit
|
||||||
|
> commit b352bc1cbc29134a356b5c16ee2281807a7b984e
|
||||||
|
> Author: Thomas Gleixner <tglx@linutronix.de>
|
||||||
|
> Date: Tue Mar 5 14:25:32 2013 +0100
|
||||||
|
>
|
||||||
|
> tick: Convert broadcast cpu bitmaps to cpumask_var_t
|
||||||
|
>
|
||||||
|
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
||||||
|
> Link: http://lkml.kernel.org/r/20130306111537.366394000@linutronix.de
|
||||||
|
> Cc: Rusty Russell <rusty@rustcorp.com.au>
|
||||||
|
>
|
||||||
|
|
||||||
|
I bet you have CONFIG_CPUMASK_OFFSTACK enabled.
|
||||||
|
|
||||||
|
/me is a moron and rumages for a brown paperbag.
|
||||||
|
|
||||||
|
Patch below.
|
||||||
|
|
||||||
|
Thanks,
|
||||||
|
|
||||||
|
tglx
|
||||||
|
|
||||||
|
------------>
|
||||||
|
|
||||||
|
Subject: tick: Use zalloc_cpumask_var for allocating offstack cpumasks
|
||||||
|
From: Thomas Gleixner <tglx@linutronix.de>
|
||||||
|
Date: Fri, 03 May 2013 20:22:36 +0200
|
||||||
|
|
||||||
|
commit b352bc1cbc (tick: Convert broadcast cpu bitmaps to
|
||||||
|
cpumask_var_t) broke CONFIG_CPUMASK_OFFSTACK in a very subtle way.
|
||||||
|
|
||||||
|
Instead of allocating the cpumasks with zalloc_cpumask_var it uses
|
||||||
|
alloc_cpumask_var, so we can get random data there, which of course
|
||||||
|
confuses the logic completely and causes random failures.
|
||||||
|
|
||||||
|
Reported-by: Dave Jones <davej@redhat.com>
|
||||||
|
Reported-by: Yinghai Lu <yinghai@kernel.org>
|
||||||
|
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
||||||
|
---
|
||||||
|
kernel/time/tick-broadcast.c | 10 +++++-----
|
||||||
|
1 file changed, 5 insertions(+), 5 deletions(-)
|
||||||
|
|
||||||
|
Index: linux-2.6/kernel/time/tick-broadcast.c
|
||||||
|
===================================================================
|
||||||
|
--- linux-2.6.orig/kernel/time/tick-broadcast.c
|
||||||
|
+++ linux-2.6/kernel/time/tick-broadcast.c
|
||||||
|
@@ -785,11 +785,11 @@ bool tick_broadcast_oneshot_available(vo
|
||||||
|
|
||||||
|
void __init tick_broadcast_init(void)
|
||||||
|
{
|
||||||
|
- alloc_cpumask_var(&tick_broadcast_mask, GFP_NOWAIT);
|
||||||
|
- alloc_cpumask_var(&tmpmask, GFP_NOWAIT);
|
||||||
|
+ zalloc_cpumask_var(&tick_broadcast_mask, GFP_NOWAIT);
|
||||||
|
+ zalloc_cpumask_var(&tmpmask, GFP_NOWAIT);
|
||||||
|
#ifdef CONFIG_TICK_ONESHOT
|
||||||
|
- alloc_cpumask_var(&tick_broadcast_oneshot_mask, GFP_NOWAIT);
|
||||||
|
- alloc_cpumask_var(&tick_broadcast_pending_mask, GFP_NOWAIT);
|
||||||
|
- alloc_cpumask_var(&tick_broadcast_force_mask, GFP_NOWAIT);
|
||||||
|
+ zalloc_cpumask_var(&tick_broadcast_oneshot_mask, GFP_NOWAIT);
|
||||||
|
+ zalloc_cpumask_var(&tick_broadcast_pending_mask, GFP_NOWAIT);
|
||||||
|
+ zalloc_cpumask_var(&tick_broadcast_force_mask, GFP_NOWAIT);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
--
|
||||||
|
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
|
||||||
|
the body of a message to majordomo@vger.kernel.org
|
||||||
|
More majordomo info at http://vger.kernel.org/majordomo-info.html
|
||||||
|
Please read the FAQ at http://www.tux.org/lkml/
|
||||||
Loading…
Reference in New Issue
Block a user