Messages in this thread | | | Date | Thu, 30 Sep 2021 10:40:11 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 0/6] wchan: Fix ORC support and leaky fallback |
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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 :-)
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