I didn't submit for 3.14 -- I will do so Monday.
On 07/16/2016 05:15 AM, Willy Tarreau wrote:
Hi Chas,
On Fri, Jul 15, 2016 at 02:26:26PM -0400, Charles (Chas) Williams wrote:
From: Andy Lutomirski <luto@xxxxxxxxxx>
commit 71b3c126e61177eb693423f2e18a1914205b165e upstream.
When switch_mm() activates a new PGD, it also sets a bit that
tells other CPUs that the PGD is in use so that TLB flush IPIs
will be sent. In order for that to work correctly, the bit
needs to be visible prior to loading the PGD and therefore
starting to fill the local TLB.
Document all the barriers that make this work correctly and add
a couple that were missing.
CVE-2016-2069
I'm fine with queuing these patches for 3.10, but patches 4, 9 and 12
of your series are not in 3.14, and I only apply patches to 3.10 if
they are already present in 3.14 (or if there's a good reason of course).
Please could you check that you already submitted them ? If so I'll just
wait for them to pop up there. It's important for us to ensure that users
upgrading from extended LTS kernels to normal LTS kernels are never hit
by a bug that was previously fixed in the older one and not yet in the
newer one.
Thanks,
Willy
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