From 2febc839133280d5a5e8e1179c94ea674489dae2 Mon Sep 17 00:00:00 2001
From: Andy Honig <ahonig@google.com>
Date: Wed, 27 Aug 2014 14:42:54 -0700
Subject: [PATCH] KVM: x86: Improve thread safety in pit

There's a race condition in the PIT emulation code in KVM.  In
__kvm_migrate_pit_timer the pit_timer object is accessed without
synchronization.  If the race condition occurs at the wrong time this
can crash the host kernel.

This fixes CVE-2014-3611.

Cc: stable@vger.kernel.org
Signed-off-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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