Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf)

From: Josh Poimboeuf
Date: Thu Jul 13 2017 - 08:21:26 EST

On Thu, Jul 13, 2017 at 07:17:55AM -0500, Josh Poimboeuf wrote:
> BTW, while we're throwing out ideas for this, here's another idea,
> though it's almost certainly not a good one :-)
> For user space stack unwinding, the kernel could emulate what the kernel
> 'guess' unwinder does by scanning the user space stack and returning all
> the text addresses it finds.
> The results wouldn't be 100% accurate, but they could end up being
> useful over time.

And to expound further on the bad idea, maybe the "bad" addresses could
be filtered out somehow in post-processing (insert lots of hand waving).