On Wed, 2018-03-21 at 11:40:25 UTC, Madhavan Srinivasan wrote:
> The current Branch History Rolling Buffer (BHRB) code does
> not check for any privilege levels before updating the data
> from BHRB. This leaks kernel addresses to userspace even when
> profiling only with userspace privileges. Add
The current Branch History Rolling Buffer (BHRB) code does
not check for any privilege levels before updating the data
from BHRB. This leaks kernel addresses to userspace even when
profiling only with userspace privileges. Add proper checks
to prevent it.
Acked-by: Balbir Singh
