panic: vrele: ref cnt
Starting stack trace...
panic(ffffffff833da579) at panic+0x1ba sys/kern/subr_prf.c:229
vrele(fffffd806adcdb20) at vrele+0x230 sys/kern/vfs_subr.c:823
fdfree(ffff80003a4f0fb0) at fdfree+0x286 sys/kern/kern_descrip.c:1216
exit1(ffff80003a4f0fb0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003a4f0fb0,ffff8000344e3890,ffff8000344e37e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff8000344e3890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000344e3890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77cd6774e7f0, count: 250
End of stack trace.