13d4f96130
Add a regression test for a scenario where a shadow vm object is shared by multiple mappings. If a page COW occurs through one of the mappings, then the virtual-to-physical mapping may become invalidated. This tests the scenario from CVE-2021-29626 which was fixed by 982693bb729badac4e65ecd59772979f2849a2b2. Reviewed by: markj Sponsored by: Dell EMC Isilon