[   1.0000000] total memory = 1023 MB
           [   1.0000000] avail memory = 910 MB
           [   1.0000000] panic: kernel diagnostic assertion "!type_is_int(type)" failed: f
           ile "/usr/src/sys/kern/kern_ubsan.c", line 95 
           [   1.0000000] cpu0: Begin traceback...
           [   1.0000000] vpanic() at netbsd:vpanic+0x10f
           [   1.0000000] KUBSan: Undefined behavior in /usr/src/sys/ddb/db_access.c:73:18
           [   1.0000000] , left shift of 72057594029701741 by 8 places cannot be represent
           ed in type 'long int'
           [   1.0000000] match_bootdisk() at netbsd:match_bootdisk
           [   1.0000000] type_is_signed() at netbsd:type_is_signed+0x4f
           [   1.0000000] val_to_string() at netbsd:val_to_string+0x5e
           [   1.0000000] __ubsan_handle_shift_out_of_bounds() at netbsd:__ubsan_handle_shi
           ft_out_of_bounds+0xf9
           [   1.0000000] cpu_init_tss() at netbsd:cpu_init_tss+0x61
           [   1.0000000] cpu_startup() at netbsd:cpu_startup+0x2ae
           [   1.0000000] main() at netbsd:main+0x14a
           [   1.0000000] cpu0: End traceback...
           [   1.0000000] fatal breakpoint trap in supervisor mode
           [   1.0000000] trap type 1 code 0 rip 0xffffffff8021eb75 cs 0x8 rflags 0x286 cr2
            0 ilevel 0x8 rsp 0xffffffff855e5c30
           [   1.0000000] curlwp 0xffffffff84606ba0 pid 0.1 lowest kstack 0xffffffff855e12c
           0
           Stopped in pid 0.1 (system) at  netbsd:breakpoint+0x5:  leave
           db{0}>  


Report by Harry Pantazis (luserx0)