linux-kernel - Re: stop_machine lockup issue in 3.9.y.

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Date:	Wed, 05 Jun 2013 20:26:21 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Ben Greear <greearb@...delatech.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Joe Lawrence <joe.lawrence@...atus.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	stable@...r.kernel.org,
	"Luis R. Rodriguez" <mcgrof@....qualcomm.com>,
	Jouni Malinen <jouni@....qualcomm.com>,
	Vasanthakumar Thiagarajan <vthiagar@....qualcomm.com>,
	Senthil Balasubramanian <senthilb@....qualcomm.com>,
	linux-wireless@...r.kernel.org, ath9k-devel@...ts.ath9k.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: stop_machine lockup issue in 3.9.y.

On Wed, 2013-06-05 at 20:14 -0700, Tejun Heo wrote:

> 
> Ah, so, that's why it's showing up now.  We probably have had the same
> issue all along but it used to be masked by the softirq limiting.  Do
> you care to revive the 10 iterations limit so that it's limited by
> both the count and timing?  We do wanna find out why softirq is
> spinning indefinitely tho.

Yes, no problem, I can do that.

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