panic: missing alias
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*388106   3554      0         0x2          0    0  getty
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82fb1ed3) at panic+0x1cf sys/kern/subr_prf.c:198
vgonel(fffffd8079ee0210,ffff80002a4a2528) at vgonel+0x681 sys/kern/vfs_subr.c:1197
checkalias(fffffd806f5ac0e0,800,ffff800000b55400) at checkalias+0x1ab
ffs_vinit(ffff800000b55400,ffff80002f3e74b0) at ffs_vinit+0x13d
ffs_vget(ffff800000b55400,13447,ffff80002f3e7598) at ffs_vget+0x421 sys/ufs/ffs/ffs_vfsops.c:1283
ufs_lookup() at ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd807eb946c0,ffff80002f3e79e8,ffff80002f3e7a18) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002f3e79b8) at vfs_lookup+0x8e1 sys/kern/vfs_lookup.c:566
namei(ffff80002f3e79b8) at namei+0x7aa sys/kern/vfs_lookup.c:250
vn_open(ffff80002f3e79b8,3,0) at vn_open+0x13f sys/kern/vfs_vnops.c:140
doopenat(ffff80002a4a2528,ffffff9c,87541976290,2,0,ffff80002f3e7b60) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123
syscall(ffff80002f3e7c10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e81897c6910, count: 1
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