linux-kernel - Re: [tip:timers/urgent] timers/tick/broadcast-hrtimer: Fix suspicious RCU usage in idle loop

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Message-ID: <20150329070447.GC18007@gmail.com>
Date:	Sun, 29 Mar 2015 09:04:47 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	stable kernel team <stable@...r.kernel.org>
Cc:	peterz@...radead.org, paulmck@...ux.vnet.ibm.com, hpa@...or.com,
	linux-kernel@...r.kernel.org, tglx@...utronix.de,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:timers/urgent] timers/tick/broadcast-hrtimer:  Fix
 suspicious RCU usage in idle loop


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

> Hi,
> 
> Can you please add stable@...r.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
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