Yonghua Huang 05682b2bad hv:bugfix in write protect page hypercall ...

This patch fixes potential hypervisor crash when
 calling hcall_write_protect_page() with a crafted
 GPA in 'struct wp_data' instance, e.g. an invalid
 GPA that is not in the scope of the target VM's
 EPT address space.

 To check the validity for this GPA  before updating
 the 'write protect' page.

Tracked-On: #4240
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Reviewed-by: Fei Li <fei1.li@intel.com>

2019-12-13 10:42:31 +08:00

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