panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x1b2fe16000, opte 0xfffffffffffffdff
Starting stack trace...
panic(ffffffff83076aba) at panic+0x1d0 sys/kern/subr_prf.c:229
pmap_remove_pte(fffffd806be2a4e8,fffffd80080effa0,7f800d97f000,1b2fe00000,1b2fe20000,0) at pmap_remove_pte
pmap_do_remove(fffffd806be2a4e8,1b2fa60000,1b2fe20000,0) at pmap_do_remove+0x533 sys/arch/amd64/amd64/pmap.c:1911
uvm_unmap_kill_entry_withlock(fffffd8067c8fdc0,fffffd806bf9f108,0) at uvm_unmap_kill_entry_withlock+0x274 sys/uvm/uvm_map.c:1865
panic: kernel diagnostic assertion "((flags &uv mP_GmaOp__LteOaCrdKEowDn)( f!=ff 0ff d&8&0 r67wc_8lfodcck_0)h eladt( uobj->vmobjlock)) || (flags &u vPmG_O_LmOaCKp_EteaD)r d=o=wn+ 00"x1 fc7a
iled: file "/syzkaller/managers/multicoure/vmskpacernee_lf/rseyes(/fufvfmffd/uvm8_0v6n7ocd8ef.dcc"0,)  liante  955
Parallel traceback, supupvrmspessaeced_.f.r.e
e+0xcd

dump to derv ea4p,e1r (nfofftf 8po0s0s0i2b9lfed
9448) at reaper+0x256 sys/kern/kern_exit.c:480
end trace frame: 0x0, count: 250
End of stack trace.

The operating system has halted.
Please press any key to reboot.

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 f8e08a03-81bc-3227-53c0-939594373760
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 0x000f27c0: 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