Just to note how this breaks things:
On OpenWRT this may happen
1. make modules is run
- Module.symvers contains symbols from modules
2. make Image/bzImage is run (as part of another OpenWRT make target)
- Module.symvers is rewritten to contain only vmlinux.o symbols
3. external kernel modules try to build (wireguard, mac80211)
- this now fails because external modules may depend on symbols from
other modules and this information isn't in Module.symvers anymore
Marek
