linux-kernel - Re: PROBLEM: Disk continually remounts and hardlocks the entire system if running on battery.

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Message-ID: <20110119145928.GC3043@thunk.org>
Date:	Wed, 19 Jan 2011 09:59:28 -0500
From:	Ted Ts'o <tytso@....edu>
To:	Robert Hancock <hancockrwd@...il.com>
Cc:	John Tyree <johntyree@...il.com>, Dmitry <dmonakhov@...nvz.org>,
	Eric Sandeen <sandeen@...hat.com>,
	Jiaying Zhang <jiayingz@...gle.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	ide <linux-ide@...r.kernel.org>
Subject: Re: PROBLEM: Disk continually remounts and hardlocks the entire
 system if running on battery.

On Wed, Jan 19, 2011 at 08:43:03AM -0600, Robert Hancock wrote:
> 
> That doesn't look like the same thing - in their case it doesn't look
> like any SATA errors are occurring, just a remount (presumably
> triggered by some userspace software).

If you have laptop mode, you definitely want to disable it, and see if
that makes a difference.  That being said, if userspace code is able
to trigger errors like that from the hardware, I'd say at first glance
the kernel should do a better job protecting itself from buggy
software, even if it is buggy software running as root....

	       	     	      	       	       - Ted
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