linux-kernel - Re: [3.10.7] Reproductible soft lockup, recover but freeze even the mouse

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Date:	Mon, 9 Sep 2013 19:48:26 +1000
From:	NeilBrown <neilb@...e.de>
To:	Bastien ROUCARIES <roucaries.bastien@...il.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Theodore Ts'o" <tytso@....edu>,
	Andreas Dilger <adilger.kernel@...ger.ca>
Subject: Re: [3.10.7] Reproductible soft lockup, recover but freeze even the
 mouse

On Mon, 9 Sep 2013 10:58:12 +0200 Bastien ROUCARIES
<roucaries.bastien@...il.com> wrote:

> Hi,
> 
> I experiment a soft lockup. during 20 s I have no mouse, could not
> switch back to console and so on.
> 
> I achieve to get a backtrace by echo 15 >
> /proc/sys/kernel/hung_task_timeout_secs
> 
> Seems file system related (hdd led is on).
> 
> My filesystems are ext4 over raid0 so add some cc

Appears to be "dm" raid0 rather than "md" raid0 - so not my area.
May help to include dm-devel@...hat.com, and maybe include a description of
the dm configuration.  e.g. "dmsetup table" output.

NeilBrown

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