syzbot

panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x72fb0460000, opte 0x800000000003effd
Starting stack trace...
panic(ffffffff83043c0e) at panic+0x1ba sys/kern/subr_prf.c:229
pmap_remove_pte(fffffd807cd8fcb8,fffffd8007377480,7f8397d821c8,72fb0439000,72fb0479000,0) at pmap_remove_pte
pmap_do_remove(fffffd807cd8fcb8,72fb0439000,72fb0479000,0) at pmap_do_remove+0x53d sys/arch/amd64/amd64/pmap.c:1911
uvm_unmap_kill_entry_withlock(fffffd806c235828,fffffd806c24b498,0) at uvm_unmap_kill_entry_withlock+0x26a sys/uvm/uvm_map.c:1865
uvm_map_teardown(fffffd806c235828) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498
uvmspace_free(fffffd806c235828) at uvmspace_free+0xbd sys/uvm/uvm_map.c:3422
reaper(ffff80002a457be0) at reaper+0x225 sys/kern/kern_exit.c:482
end trace frame: 0x0, count: 250
End of stack trace.