panic: missing alias
Starting stack trace...
panic(ffffffff833433d3) at panic+0x1d0 sys/kern/subr_prf.c:229
vgonel(fffffd80777480d8,ffff8000ffff22a0) at vgonel+0x681 sys/kern/vfs_subr.c:1217
checkalias(fffffd805e8606e8,800,ffff800000b49800) at checkalias+0x1ab sys/kern/vfs_subr.c:-1
ffs_vinit(ffff800000b49800,ffff80002a306100) at ffs_vinit+0x13d sys/ufs/ffs/ffs_subr.c:-1
ffs_vget(ffff800000b49800,13425,ffff80002a3061e8) at ffs_vget+0x429 sys/ufs/ffs/ffs_vfsops.c:1283
ufs_lookup() at ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd8009eeb360,ffff80002a306470,ffff80002a3064a0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a306440) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
namei(ffff80002a306440) at namei+0x7aa sys/kern/vfs_lookup.c:250
dofchownat(ffff8000ffff22a0,ffffff9c,c94c4618290,0,0,0) at dofchownat+0xd7 sys/kern/vfs_syscalls.c:2478
syscall(ffff80002a3066e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3066e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x79a1b52ebdf0, count: 245
End of stack trace.
syncing disks...31 30 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18  giving up