panic: vput: v_writecount != 0
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
   8913  69634      0     0x14000      0x200    0  reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
vput(fffffd806e590b50) at vput+0x187 sys/kern/vfs_subr.c:759
vn_closefile(fffffd807ad6e430,ffff800020afe008) at vn_closefile+0x15b sys/kern/vfs_vnops.c:583
fdrop(fffffd807ad6e430,ffff800020afe008) at fdrop+0xc9 sys/kern/kern_descrip.c:1269
closef(fffffd807ad6e430,ffff800020afe008) at closef+0x11d sys/kern/kern_descrip.c:1253
fdfree(ffff800020afe008) at fdfree+0xf8 sys/kern/kern_descrip.c:1185
exit1(ffff800020afe008,0,1) at exit1+0x32f sys/kern/kern_exit.c:196
sys_exit(ffff800020afe008,ffff800022e0f020,ffff800022e0f090) at sys_exit+0x17 sys/kern/kern_exit.c:94
syscall(ffff800022e0f100) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800022e0f100) at syscall+0x552 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,1,0,1,0,7f7ffffe7d74) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe7d40, count: 4
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