panic: bad dir
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
* 92507  73129      0         0x2          0    0  ifconfig
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:212
ufs_dirbadentry(ffff8000149f9f08,ffff8000149f9f08,6c4483afd7f55f86) at ufs_dirbadentry
VOP_LOOKUP(fffffd803efda708,ffff8000149f9fb0,ffff8000149f9f70) at VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
unveil_find_cover(fffffd803efda708,ffff8000ffff9778) at unveil_find_cover+0x139 sys/kern/kern_unveil.c:290
unveil_add_vnode(ffff8000ffff73c0,fffffd803efda708,0) at unveil_add_vnode+0x23c sys/kern/kern_unveil.c:471
unveil_add(ffff8000ffff9778,ffff8000149fa578,ffff8000149fa643) at unveil_add+0x273 sys/kern/kern_unveil.c:597
sys_unveil(ffff8000ffff9778,ffff8000149fa6b0,ffff8000149fa720) at sys_unveil+0x405 sys/kern/vfs_syscalls.c:937
syscall(ffff8000149fa790) at syscall+0x511
Xsyscall(6,72,1,72,7f7fffff3758,81d60608ac8) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff36e0, count: 5
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