KVM: x86/mmu: Allocate the lm_root before allocating PAE roots

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Allocate lm_root before the PAE roots so that the PAE roots aren't
leaked if the memory allocation for the lm_root happens to fail.

Note, KVM can still leak PAE roots if mmu_check_root() fails on a guest's
PDPTR, or if mmu_alloc_root() fails due to MMU pages not being available.
Those issues will be fixed in future commits.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210305011101.3597423-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2021-03-04 17:10:48 -08:00 • committed by Paolo Bonzini

parent b37233c911

commit ba0a194ffb

1 changed files with 31 additions and 33 deletions

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arch/x86/kvm/mmu/mmu.c

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