syzbot

login: uvm_fault(0xfffffd806cb3ba20, 0x70, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff820452f8 cs 8 rflags 10246 cr2 70 cpl 0 rsp ffff800035cd3460
gsbase 0xffffffff83855ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff820452f8
Starting stack trace...
panic(ffffffff83449974) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff800035cd33b0) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000384daa88,fffffd80660b2048,ffff800035cd3590) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771
sys_futimes(ffff8000384daa88,ffff800035cd36d0,ffff800035cd3620) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2813
syscall(ffff800035cd36d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff800035cd36d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xdfb1ed0f160, count: 250
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 e4c28bce-9379-8bb2-f2c8-a7cf484f58e0
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 0x000f26f0: 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 $lines = 0
set: syntax error
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