Unfortunately, no, there's no in-kernel DWARF unwinder due to the
complexity involved.
Instead, the kernel uses ORC and has an unwinder for that. Adding ORC support to all of
Linux userspace so that we can unwind it in the kernel isn't likely to happen, since
all tooling would have to be changed to support ORC.
A huge task, most definitely. Setting that aside though, which cases (if any) would that
solution *not* handle? Is the level of effort required the primary blocker to such a
solution, or are there technical ones as well?