On Fri, Feb 15, 2019 at 9:49 AM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > > From: Changbin Du <changbin.du@xxxxxxxxx> > > The userspace can ask kprobe to intercept strings at any memory address, > including invalid kernel address. Again, this is not about a "kernel address" at all. It's neither a kernel address _nor_ a user address. It's an invalid address entirely, and there is nothing that makes it "kernel". Please don't talk about "invalid kernel addresses" when it is no such thing. Linus