tree 888237497c59d17c1420de8384ffd7b43e4a0a93
parent c33e05d9b067433252b1008d2f37bf64e11151f1
author Paolo Bonzini <pbonzini@redhat.com> 1627317541 -0400
committer Paolo Bonzini <pbonzini@redhat.com> 1627419540 -0400

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

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]