On Wed, Sep 29, 2021 at 06:01:57PM -0700, Josh Poimboeuf wrote: > - Should we use a similar sched wrapper for /proc/$pid/stack to make its > raciness go away? Alternatively, can we make /stack go away? AFAICT the semantics of that are far worse in that it wants the actual kernel stack of a task, blocked or not, which is a total pain in the arse (not to mention a giant infoleak and side-channel). > - At the risk of triggering a much larger patch set, I suspect > get_wchan() can be made generic ;-) It's just a glorified wrapper > around stack_trace_save_tsk(). Done that for you :-)
