RE: [PATCH V6 0/6] Intel memory b/w monitoring support

From: Luck, Tony
Date: Fri Mar 11 2016 - 20:56:21 EST

Some tracing printk() show that we are calling update_sample() with totally bogus arguments.

There are a few good calls, then I see rmid=-380863112 evt_type=-30689 first=0

That turns into a wild vrmid, and we fault accessing mbm_current->prev_msr