kern/150544: Panic, when viewing the list of ZFS snapshots

[jhell]

The following reply was made to PR kern/150544; it has been noted by GNATS.

From: jhell <jhell at DataIX.net>
To: Andriy Gapon <avg at icyb.net.ua>
Cc: "Vladislav V. Prodan" <universite at ukr.net>, bug-followup at FreeBSD.org
Subject: Re: kern/150544: Panic, when viewing the list of ZFS snapshots
Date: Tue, 14 Sep 2010 02:38:25 -0400

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 On 09/14/2010 02:19, Andriy Gapon wrote:
 > Looks like unimplemented vop_lock1.
 > I think that default implementation usually comes in via default_vnodeops, but
 > can be locally overridden.
 > What kind of a vnode is this?  Can you print *vp in e.g. frame 8?
 
 Attached.
 
 
 Thanks for looking into this.
 
 - -- 
 
  jhell,v
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 #8  0x806fdfbc in _vn_lock (vp=0x8b65da78, flags=525312, 
     file=0x80cee192 "/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/gfs.c", 
     line=437) at vnode_if.h:859
 859     vnode_if.h: No such file or directory.
         in vnode_if.h
 (kgdb) p *vp
 $1 = {v_type = VNON, v_tag = 0x80cf5f8d "zfs", v_op = 0x80d0fea0, v_data = 0x0, v_mount = 0x0, 
   v_nmntvnodes = {tqe_next = 0x0, tqe_prev = 0x0}, v_un = {vu_mount = 0x0, vu_socket = 0x0, 
     vu_cdev = 0x0, vu_fifoinfo = 0x0, vu_yield = 0}, v_hashlist = {le_next = 0x0, le_prev = 0x0}, 
   v_hash = 0, v_cache_src = {lh_first = 0x0}, v_cache_dst = {tqh_first = 0x0, 
     tqh_last = 0x8b65daa8}, v_cache_dd = 0x0, v_cstart = 0, v_lasta = 0, v_lastw = 0, v_clen = 0, 
   v_lock = {lock_object = {lo_name = 0x80cf5f8d "zfs", lo_flags = 91422728, lo_data = 0, 
       lo_witness = 0x0}, lk_lock = 1, lk_timo = 51, lk_pri = 80}, v_interlock = {lock_object = {
       lo_name = 0x80991811 "vnode interlock", lo_flags = 16973824, lo_data = 0, lo_witness = 0x0}, 
     mtx_lock = 4}, v_vnlock = 0x8b65dad0, v_holdcnt = 1, v_usecount = 1, v_iflag = 0, v_vflag = 0, 
   v_writecount = 0, v_freelist = {tqe_next = 0x0, tqe_prev = 0x0}, v_bufobj = {bo_mtx = {
       lock_object = {lo_name = 0x80991821 "bufobj interlock", lo_flags = 16973824, lo_data = 0, 
         lo_witness = 0x0}, mtx_lock = 4}, bo_clean = {bv_hd = {tqh_first = 0x0, 
         tqh_last = 0x8b65db34}, bv_root = 0x0, bv_cnt = 0}, bo_dirty = {bv_hd = {tqh_first = 0x0, 
         tqh_last = 0x8b65db44}, bv_root = 0x0, bv_cnt = 0}, bo_numoutput = 0, bo_flag = 0, 
     bo_ops = 0x809ed6c0, bo_bsize = 65536, bo_object = 0x0, bo_synclist = {le_next = 0x0, 
       le_prev = 0x0}, bo_private = 0x8b65da78, __bo_vnode = 0x8b65da78}, v_pollinfo = 0x0, 
   v_label = 0x0, v_lockf = 0x0}
 
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