vputx: usecount not zero for vnode

[Eugene M. Zheganin]

Hello,


what is this panic, got it just recently on a fresh -STABLE r332466:

Apr 18 17:52:39 san1 kernel: vputx: usecount not zero for vnode
Apr 18 17:52:39 san1 kernel: 0xfffff80f4d7d1760: tag devfs, type VCHR
Apr 18 17:52:39 san1 kernel: usecount -1, writecount -1, refcount 0


"vputx: usecount not zero for vnode" can be fund in just one place, 
/usr/src/sys/kern/vfs_subr.c, and it's followed by the panic() syscall.

Unfortunately, I have no crashdump of it (though I usually get 
crashdumps on this machine).


Eugene.