Description: ashmem readonly bypasses via remap_file_pages() and ASHMEM_UNPIN
References:
 https://bugs.chromium.org/p/project-zero/issues/detail?id=1949
Notes:
 Just staging
Bugs:
upstream:
4.19-upstream-stable:
4.9-upstream-stable:
3.16-upstream-stable:
sid:
4.19-buster-security:
4.9-stretch-security:
3.16-jessie-security: