panic: vrele: ref cnt
Starting stack trace...
panic(ffffffff830a4eef) at panic+0x1ba sys/kern/subr_prf.c:229
vrele(fffffd807ca9d9a8) at vrele+0x230 sys/kern/vfs_subr.c:813
fdfree(ffff80002a4b47a8) at fdfree+0x289 sys/kern/kern_descrip.c:1210
exit1(ffff80002a4b47a8,0,0,1) at exit1+0x6db sys/kern/kern_exit.c:221
sys_exit(ffff80002a4b47a8,ffff800031673e00,ffff800031673d50) at sys_exit+0x1a
syscall(ffff800031673e00) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7165c0c4bd20, count: 250
End of stack trace.