You need to identify what the "last lockecd" location is, something like:
gdb netbsd.gdb # or just netbsd, if you do not have a netbsd.gdb
gdb> list *(0xffffffff80ea0a90)
(I never can remember the equivalent addr2line flags for this, probably:
addr2line -a 0xffffffff80ea0a90 -e netbsd.gdb)
Martin
