Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 16 Jun 2016 19:36:52 -0400
To: Kees Cook <>
Cc: "" <>,
        Brad Spengler <>,
        PaX Team <>,
        Casey Schaufler <>,
        Rik van Riel <>, Christoph Lameter <>,
        Pekka Enberg <>,
        David Rientjes <>,
        Joonsoo Kim <>,
        Andrew Morton <>
Subject: Re: [RFC][PATCH v2 0/4] mm: Hardened usercopy

On Wed, 15 Jun 2016 18:38:31 -0700, Kees Cook said:
> On Wed, Jun 15, 2016 at 6:30 PM,  <> wrote:
> > So I guess you can stick a:
> >
> > Tested-By: Valdis Kletnieks <>
> >
> > on that patch set. :)
> Awesome, thanks! It's good to know the system operated normally up
> until that point. I'm glad to have lots of people testing.

Following up - I did a BFI patch against the NVidia driver that basically
tagged all its memory allocations as USERCOPY, and the resulting kernel
has gotten up to multiuser and XOrg.  Been up for a half hour doing my usual
stuff on the laptop, and no usercopy whines.

Workload: email, pidgin IM, Google Chrome with some 30 tabs, some streaming
audio. Plenty of room for corner cases still lurking, but all the basic
stuff is working.  I may whomp on it with trinity for a while, see if
anything falls out...

Today's surprise: VirtualBox 5.0.22 was released - and it was able to boot
a Windows 7 image to the desktop without complaint.  Something still wonky
there, as it gets unstable at some point, but given the lack of dmesg entries,
I suspect it's a linux-next regression rather than a usercopy issue.  Will
debug more later tonight.

NVidia patch attached as guidance to what's needed for anybody else who's facing
patching an out-of-tree module.

View attachment "nvidia-367.24-usercopy-BFI.patch" of type "text/plain " (2367 bytes)

Content of type "application/pgp-signature" skipped

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.