From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Date: Sun, 29 Mar 2015 09:04:47 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Preeti U Murthy <preeti@linux.vnet.ibm.com>,
	stable kernel team <stable@vger.kernel.org>
Cc: peterz@infradead.org, paulmck@linux.vnet.ibm.com, hpa@zytor.com,
	linux-kernel@vger.kernel.org, tglx@linutronix.de,
	linux-tip-commits@vger.kernel.org
Subject: Re: [tip:timers/urgent] timers/tick/broadcast-hrtimer:  Fix
 suspicious RCU usage in idle loop
Message-ID: <20150329070447.GC18007@gmail.com>
References: <20150318104705.17763.56668.stgit@preeti.in.ibm.com>
 <tip-a127d2bcf1fbc8c8e0b5cf0dab54f7d3ff50ce47@git.kernel.org>
 <55138184.3000801@linux.vnet.ibm.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <55138184.3000801@linux.vnet.ibm.com>
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <stable.vger.kernel.org>


* Preeti U Murthy <preeti@linux.vnet.ibm.com> wrote:

> Hi,
> 
> Can you please add stable@vger.kernel.org to the Cc?
> Without the patch, we get RCU warnings during bootup.
> Hence the patch is important for the stable kernels as well.

This fix is now upstream.

Greg, please back-port the following upstream commit to -stable:

  a127d2bcf1fb ("timers/tick/broadcast-hrtimer: Fix suspicious RCU usage in idle loop")

this bug was introduced in v3.15 and will cleanly apply to v3.15 and 
all later stable kernels.

Thanks,

	Ingo