James Huang f293fa670f gpu: nvgpu: add speculative load barrier (ctrl IOCTLs) ...

Data can be speculatively loaded from memory and stay in cache even
when bound check fails. This can lead to unintended information
disclosure via side-channel analysis.

To mitigate this problem insert a speculation barrier.

bug 2039126
CVE-2017-5753

Change-Id: Ib6c4b2f99b85af3119cce3882fe35ab47509c76f
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1640500
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Signed-off-by: James Huang <jamehuang@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1650050
GVS: Gerrit_Virtual_Submit
Reviewed-by: Hayden Du <haydend@nvidia.com>

2018-02-01 22:02:10 -08:00

..

nvgpu

gpu: nvgpu: add speculative load barrier (ctrl IOCTLs)

2018-02-01 22:02:10 -08:00