uvm_fault(0xfffffd807d2b9188, 0x7f82ba0fcbc8, 0, 2) -> e
fatal page fault in supervisor mode
trap type 6 code 2 rip ffffffff812f32cd cs 8 rflags 10246 cr2 7f82ba0fcbc8 cpl a rsp ffff80002a8efa70
gsbase 0xffffffff8378eff0  kgsbase 0x0
panic: trap type 6, code=2, pc=ffffffff812f32cd
Starting stack trace...
panic(ffffffff8339414c) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80002a8ef9c0) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
pmap_page_remove(fffffd8007117b00) at pmap_page_remove+0x43d _atomic_swap_64 sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:117 [inline]
pmap_page_remove(fffffd8007117b00) at pmap_page_remove+0x43d sys/arch/amd64/amd64/pmap.c:2014
uvm_anfree_list(fffffd8064e5ee58,0) at uvm_anfree_list+0xd6 sys/uvm/uvm_anon.c:112
amap_wipeout(fffffd806dfa6b30) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff80002a8efc00,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
uvm_map_teardown(fffffd807d2b9188) at uvm_map_teardown+0x357 sys/uvm/uvm_map.c:2525
exit1(ffff80002a7cda08,0,0,3) at exit1+0x6e6 sys/kern/kern_exit.c:259
proc_suspend_check_locked(ffff80002a7cda08,0) at proc_suspend_check_locked+0x4ba sys/kern/kern_sig.c:2235
userret(ffff80002a7cda08) at userret+0x8c proc_suspend_check sys/kern/kern_sig.c:-1 [inline]
userret(ffff80002a7cda08) at userret+0x8c sys/kern/kern_sig.c:2194
syscall(ffff80002a8efe70) at syscall+0xa56 mi_syscall_return sys/sys/syscall_mi.h:203 [inline]
syscall(ffff80002a8efe70) at syscall+0xa56 sys/arch/amd64/amd64/trap.c:786
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78329ab194d0, count: 244
End of stack trace.

dump to dev 4,1 not possible
rebooting...
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID d662f6a5-d763-0b53-7cd8-e4e6b0001699
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f26e0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.67
boot> set $maxwidth = 0
set: syntax error
boot> show panic
boot: illegal argument panic
boot> trace
boot> show registers
boot> show proc
boot> ps
boot> show all locks
boot> show malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace