syzbot

login: panic: missing alias
Stopped at      db_enter+0xa:   popq    %rbp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*138549  77536      0         0x2          0    0  syz-executor0
db_enter() at db_enter+0xa
panic() at panic+0x147
vgonel(ffffff0063550618,ffff8000210c3c30) at vgonel+0x39f
vrecycle(ffff8000210c3c30,ffffff0063550618) at vrecycle+0x33
ufs_inactive(ffffff0063550618) at ufs_inactive+0x207
VOP_INACTIVE(ffffff0063550618,ffffff0063550618) at VOP_INACTIVE+0x49
vput(ffffff0065739ea8) at vput+0x63
ufs_remove(ffffffff81e20630) at ufs_remove+0xbd
VOP_REMOVE(0,ffffff0063550618,0) at VOP_REMOVE+0x5c
dounlinkat(ffff800021168d90,ffff8000210c3c30,ffff8000210a5660,a0) at dounlinkat+0x12e
syscall(0) at syscall+0x3e4
Xsyscall(6,a,7f7ffffde6d0,a,285b267d1c0,7f7ffffdeb20) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffdeb10, count: 3
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