KVM: x86: Fix the NULL pointer parameter in check_cr_write()

Routine check_cr_write() will trigger emulator_get_cpuid()->
kvm_cpuid() to get maxphyaddr, and NULL is passed as values
for ebx/ecx/edx. This is problematic because kvm_cpuid() will
dereference these pointers.

Fixes: d1cd3ce90044 ("KVM: MMU: check guest CR3 reserved bits based on its physical address width.")
Reported-by: Jim Mattson <[email protected]>
Signed-off-by: Yu Zhang <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Reviewed-by: Jim Mattson <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>

0 files changed, 0 insertions, 0 deletions