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
*466787  21223      0     0x14000      0x200    0  reaper
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830b234c) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff830679a2,ffffffff82fb92ad,4e0,ffffffff830bcc88
) at __assert+0x29
uvm_pageunwire(fffffd8006784a80) at uvm_pageunwire+0x1dd sys/uvm/uvm_page.c:1248
uvm_fault_unwire_locked(fffffd806c621418,8bf381d8000,8bf383d700
0) at uvm_fault_unwire_locked+0x33e sys/uvm/uvm_fault.c:1695
uvm_unmap_kill_entry_withlock(fffffd806c621418,fffffd8057463ad8
,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1861
uvm_map_teardown(fffffd806c621418) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498
uvmspace_free(fffffd806c621418) at uvmspace_free+0xbd sys/uvm/uvm_map.c:3422
reaper(ffff80002a457be0) at reaper+0x225 sys/kern/kern_exit.c:478
end trace frame: 0x0, count: 6
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