From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 17 Jul 2014 10:25:16 +0000 (+0200)
Subject: KVM: nVMX: fix lifetime issues for vmcs02
X-Git-Tag: v3.2.84~130
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bcad1c3975a8b59d2695c5f1dc85aba24330a51f;p=pandora-kernel.git

KVM: nVMX: fix lifetime issues for vmcs02

commit 4fa7734c62cdd8c07edd54fa5a5e91482273071a upstream.

free_nested needs the loaded_vmcs to be valid if it is a vmcs02, in
order to detach it from the shadow vmcs.  However, this is not
available anymore after commit 26a865f4aa8e (KVM: VMX: fix use after
free of vmx->loaded_vmcs, 2014-01-03).

Revert that patch, and fix its problem by forcing a vmcs01 as the
active VMCS before freeing all the nested VMX state.

Reported-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Tested-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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