From mboxrd@z Thu Jan  1 00:00:00 1970
From: Carsten Emde <C.Emde@osadl.org>
Subject: Re: cpu stall and hyperthread
Date: Thu, 05 Jul 2012 00:52:58 +0200
Message-ID: <4FF4C94A.6040105@osadl.org>
References: <4FEBCDDE.60503@gmail.com> <4FF351C6.3000100@gmail.com>
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Cc: linux-rt-users@vger.kernel.org
To: Dong Liu <dliu.cn@gmail.com>
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Dong Liu,

>[..]
> BUG: soft lockup - CPU#0 stuck for 279s! [swapper/0:0]
Just a wild guess: Please check your configuration for 
CONFIG_RT_GROUP_SCHED=y. Is it there? If so, disable it and try whether 
this solves your problem.

	-Carsten.