[PATCH 1/2] arm64: Implement arch_stack_walk_reliable

[Josh Poimboeuf]

On Tue, Mar 18, 2025 at 08:58:52PM -0700, Song Liu wrote:
> On a closer look, I think we also need some logic in unwind_find_stack()
> so that we can see when the unwinder hits the exception boundary. For
> this reason, we may still need unwind_state.unreliable. I will look into
> fixing this and send v2.

Isn't that what FRAME_META_TYPE_PT_REGS is for?

Maybe it can just tell kunwind_stack_walk() to set a bit in
kunwind_state which tells kunwind_next_frame_record_meta() to quit the
unwind early for the FRAME_META_TYPE_PT_REGS case.  That also has the
benefit of stopping the unwind as soon as the exception is encounterd.

-- 
Josh