tree 134b32b899c3684a7ebcef5c3a6d23784afe28b7
parent 3110010896f17f381bd74d72b9d4a46a087c46b8
author Michael Kelley <mikelley@microsoft.com> 1495129567 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1495719762 +0200

Drivers: hv: vmbus: Close timing hole that can corrupt per-cpu page

Extend the disabling of preemption to include the hypercall so that
another thread can't get the CPU and corrupt the per-cpu page used
for hypercall arguments.

Cc: <Stable@vger.kernel.org> #4.11
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>