KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initialized

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Right now, svm_hv_vmcb_dirty_nested_enlightenments has an incorrect
dereference of vmcb->control.reserved_sw before the vmcb is checked
for being non-NULL.  The compiler is usually sinking the dereference
after the check; instead of doing this ourselves in the source,
ensure that svm_hv_vmcb_dirty_nested_enlightenments is only called
with a non-NULL VMCB.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Vineeth Pillai <viremana@linux.microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[Untested for now due to issues with my AMD machine. - Paolo]

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Paolo Bonzini 2021-07-26 12:39:01 -04:00

parent c33e05d9b0

commit 3fa5e8fd0a

2 changed files with 3 additions and 3 deletions

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4

arch/x86/kvm/svm/svm.c

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2

arch/x86/kvm/svm/svm_onhyperv.h

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