On Wed, 2018-03-21 at 11:40:26 UTC, Madhavan Srinivasan wrote:

Sampled Data Address Register (SDAR) is a 64-bit
register that contains the effective address of
the storage operand of an instruction that was
being executed, possibly out-of-order, at or around
the time that the Performance Monitor alert occurred.

In certain scenario SDAR happen to contain the kernel
address even for userspace only sampling. Add checks
to prevent it.

Signed-off-by: Madhavan Srinivasan <redacted>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/cd1231d7035fea894118d5155ff984

cheers