panic() at panic+0x15c sys/kern/subr_prf.c:207
vput(fffffd802a671050) at vput+0x187 sys/kern/vfs_subr.c:759
vn_closefile(fffffd803c942690,ffff8000ffff2290) at vn_closefile+0x15b sys/kern/vfs_vnops.c:584
fdrop(fffffd803c942690,ffff8000ffff2290) at fdrop+0xc9 sys/kern/kern_descrip.c:1269
closef(fffffd803c942690,ffff8000ffff2290) at closef+0x118 sys/kern/kern_descrip.c:1253
fdfree(ffff8000ffff2290) at fdfree+0xf7 sys/kern/kern_descrip.c:1185
exit1(ffff8000ffff2290,0,1) at exit1+0x32f sys/kern/kern_exit.c:196
sys_exit(ffff8000ffff2290,ffff800017be43f0,ffff800017be4460) at sys_exit+0x17 sys/kern/kern_exit.c:94
syscall(ffff800017be44c0) at syscall+0x508
Xsyscall(0,1,0,1,0,7f7ffffee824) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffee7f0, count: 4
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