linux-kernel - Hard lockup and hang

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Message-ID: <CA+1xoqdUbPHJHC7C5AZaZL75-NMXJX13du1uwbFEr3c8EE2jSg@mail.gmail.com>
Date:	Wed, 30 May 2012 00:55:47 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	"linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>
Subject: Hard lockup and hang

Hi all,

While fuzzing with trinity inside a KVM tool guest, I've started to
observe an odd behavior with today's linux-next (May 29). I would
occasionally see the following message:

  [ 4130.415117] Kernel panic - not syncing: Watchdog detected hard
LOCKUP on cpu 1

But without any dump before (or after) it, and without the reboot I'm
supposed to see.

Any changes recently which can explain this behavior?
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