On Fri, Jan 29, 2021 at 04:24:54PM -0500, Steven Rostedt wrote: > Specifically, kprobe and ftrace callbacks may have this: > > if (in_nmi()) > return; > > raw_spin_lock_irqsave(&lock, flags); > [..] > raw_spin_unlock_irqrestore(&lock, flags); > > Which is totally fine to have, Why? There's a distinct lack of explaining here. Note that we ripped out all such dodgy locking from kretprobes.
