panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0xd897cc16000, opte 0xffffffffffffffff Starting stack trace... panic(ffffffff828e7490) at panic+0x16f sys/kern/subr_prf.c:229 pmap_remove_ptes(fffffd806a7513f0,fffffd8007761b00,7f86c4be6000,d897cc00000,d897cc38000,0,44b12dabeb1744aa) at pmap_remove_ptes+0x33e pmap_do_remove(fffffd806a7513f0,d897cbf8000,d897cc38000,0) at pmap_do_remove+0x410 sys/arch/amd64/amd64/pmap.c:1896 uvm_unmap_kill_entry_withlock(fffffd806b150c18,fffffd8070af4d30,0) at uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 uvm_map_teardown(fffffd806b150c18) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806b150c18) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 uvmspace_free(fffffd806b150c18) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: 250 End of stack trace.