[*] pre-check: guest alive + gdb_tab/gdb_handle_exception symbols present
6.5-DEVELOPMENT
ffffffff81175fc0 B boothowto
ffffffff80b94240 T gdb_handle_exception
ffffffff8131dd20 B gdb_tab
[*] serial byte offset before trigger
14294 ../../../dfbsd-qemu/boot.log
[*] triggering: sysctl debug.enter_debugger=gdb  (expect HANG -> rc 124)
TRIGGER_RC=124
[*] post-check: is the guest still answering?
Connection timed out during banner exchange
GUEST_ANSWERS=NO (wedged)
[*] qemu process still running?
QEMU_PROCESS=alive