panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)
" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_pag
e.c", line 1248
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*453162  92410      0     0x14000      0x200    0  reaper
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830b4120) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff83068a43,ffffffff82fba65d,4e0,ffffffff830bdb93
) at __assert+0x29
uvm_pageunwire(fffffd8006b99a00) at uvm_pageunwire+0x1dd sys/uvm/uvm_page.c:1248
uvm_fault_unwire_locked(fffffd807e105818,c1ca7d6d000,c1ca7f6c00
0) at uvm_fault_unwire_locked+0x33e sys/uvm/uvm_fault.c:1695
uvm_unmap_kill_entry_withlock(fffffd807e105818,fffffd806c199d78
,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1861
uvm_map_teardown(fffffd807e105818) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498
uvmspace_free(fffffd807e105818) at uvmspace_free+0xbd sys/uvm/uvm_map.c:3422
reaper(ffff80002a457958) at reaper+0x225 sys/kern/kern_exit.c:478
end trace frame: 0x0, count: 6
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