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Description: arm64: Enforce BBM for huge IO/VMAP mappings
References:
https://source.android.com/security/bulletin/pixel/2019-09-01
Notes:
carnil> Commit fixes 324420bf91f6 ("arm64: add support for ioremap()
carnil> block mappings") which is in 4.6-rc1.
Bugs:
upstream: released (4.16-rc3) [15122ee2c515a253b0c66a3e618bc7ebe35105eb]
4.19-upstream-stable: N/A "Fixed before branching point"
4.9-upstream-stable: released (4.9.211) [4f45a0a170355546cc47ba7bbf3973fe187d05cf]
3.16-upstream-stable: N/A "Vulnerable code not present"
sid: released (4.16.5-1)
4.19-buster-security: N/A "Fixed before branching point"
4.9-stretch-security: released (4.9.210-1+deb9u1) [bugfix/arm64/arm64-enforce-bbm-for-huge-io-vmap-mappings.patch]
3.16-jessie-security: N/A "Vulnerable code not present"
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