From mboxrd@z Thu Jan  1 00:00:00 1970
From: andrew@lunn.ch (Andrew Lunn)
Date: Wed, 7 Mar 2018 23:27:22 +0100
Subject: Bug#887873: linux-image-4.9.0-5-marvell: frequent "usercopy:
 kernel memory overwrite attempt detected" on QNAP NAS (ARM)
In-Reply-To: <1520455769.3085111.1295233032.3B89F103@webmail.messagingengine.com>
References: <151652931598.757.4527606947579667082.reportbug@massive.lan>
 <20180304174157.ajom7whbo7pr3qb4@jirafa.cyrius.com>
 <20180304204115.GD21710@lunn.ch>
 <151652931598.757.4527606947579667082.reportbug@massive.lan>
 <20180305142846.GJ25189@lunn.ch>
 <1520265474.2408.8.camel@debian.org>
 <1520297697.4117371.1292731088.7BEDFAAE@webmail.messagingengine.com>
 <1520395120.2285859.1294250416.5E5FC747@webmail.messagingengine.com>
 <20180307133611.GC18030@lunn.ch>
 <1520455769.3085111.1295233032.3B89F103@webmail.messagingengine.com>
Message-ID: <20180307222722.GH1326@lunn.ch>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Thu, Mar 08, 2018 at 09:49:29AM +1300, Menno Finlay-Smits wrote:
> On Thu, 8 Mar 2018, at 02:36, Andrew Lunn wrote:
> > > What else can I try?
> > 
> > Do you have transparent huge pages enabled?
> > 
> > ~$ cat /sys/kernel/mm/transparent_hugepage/enabled 
> > [always] madvise never
> > 
> > If so, could you disable it with:
> > 
> > echo never > /sys/kernel/mm/transparent_hugepage/enabled
> > 
> > and run your rsync command.

Hi Menno

Could you also try linux-image-4.14.0-3-marvell from sid?

There does not appear to be a 4.15 yet for marvell.

      Andrew