Pull kgdb fixes from Jason Wessel:

 - Fix long standing problem with kdb kallsyms_symbol_next() return
   value

 - Add new co-maintainer Daniel Thompson

* tag 'for_linus-4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb:
  kgdb/kdb/debug_core: Add co-maintainer Daniel Thompson
  kdb: Fix handling of kallsyms_symbol_next() return value