> Date: Thu, 23 Dec 2021 14:56:19 +0000 > From: Taylor R Campbell <riastr...@netbsd.org> > > I'm wondering whether the two bus_space_maps in intel_opregion_setup > overlap, and whether one needs to be a bus_space_subregion or > something.
Never mind, that's a red herring and obviously not what's happening here. Maybe it's bus_space_alloc that's taking the address, not bus_space_map or bus_space_reserve at all? Can you put the same db_stacktrace treatment into extent_alloc_subregion1? Maybe every time an extent_region is inserted into the list or every time anything writes to er_start, print its address, start, end, and stack trace?
