On 7/27/2021 11:23 AM, Vitaly Kuznetsov wrote:
Paolo Bonzini <pbonzini@xxxxxxxxxx> writes:
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@xxxxxxxxxx>
Cc: Vineeth Pillai <viremana@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
[Untested for now due to issues with my AMD machine. - Paolo]
Finally got hold of an AMD machine and tested nested virt: windows on
linux on
windows with the patches applied. Did basic boot and minimal verification.
Tested-by: Vineeth Pillai <viremana@xxxxxxxxxxxxxxxxxxx>
Thanks,
Vineeth
