From: Greg KH <gregkh@linuxfoundation.org>
To: Jamie Iles <jamie.iles@oracle.com>
Cc: aryabinin@virtuozzo.com, stable@vger.kernel.org,
Borislav Petkov <bp@suse.de>
Subject: Re: Extra backport for 4.4.y KPTI+KASAN
Date: Fri, 5 Jan 2018 14:36:55 +0100 [thread overview]
Message-ID: <20180105133655.GD12036@kroah.com> (raw)
In-Reply-To: <20180105121507.x7yrgpw3hpo6z6tm@cedar>
On Fri, Jan 05, 2018 at 12:15:07PM +0000, Jamie Iles wrote:
> Resending with Greg's correct email address.
>
> On Fri, Jan 05, 2018 at 12:11:14PM +0000, Jamie Iles wrote:
> > Hi Greg,
> >
> > When booting a 4.4.y stable-rc kernel with a fairly minimal config and
> > CONFIG_KASAN=y and "nopti" on the kernel command line, or v4.4.109, I
> > get a load of KASAN spews as below. A bisect takes me back to
> > 85d3700c744a11 (x86/mm: If INVPCID is available, use it to flush global
> > mappings), but I think the real fix is to also add 69e0210fd01ff15
> > (x86/kasan: Clear kasan_zero_page after TLB flush) onto your branch to
> > address these false positives.
Again, nice find! I've queued this up as well, thanks.
greg k-h
prev parent reply other threads:[~2018-01-05 13:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-05 12:11 Extra backport for 4.4.y KPTI+KASAN Jamie Iles
2018-01-05 12:15 ` Jamie Iles
2018-01-05 13:36 ` Greg KH [this message]
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