panic: vput: ref cnt
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
  53530  37203      0   0x8000000          0    0  syz-executor
*437131  25045      0   0x8000002          0    1K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8301406e) at panic+0x1e5 sys/kern/subr_prf.c:198
vput(fffffd8069d6cb00) at vput+0x1d9 sys/kern/vfs_subr.c:764
domkdirat(ffff80002a1402d0,ffffff9c,746da08a4600,1ff) at domkdirat+0x22a sys/kern/vfs_syscalls.c:3102
syscall(ffff80002a0ee980) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a0ee980) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x746da08a46a0, count: 9
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