The following reply was made to PR kern/33408; it has been noted by GNATS.

From: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
To: rpaulo@fnop.net
Cc: gnats-bugs@netbsd.org, kern-bug-people@netbsd.org,
	gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/33408: dvd of death
Date: Thu, 04 May 2006 00:45:24 +0900

 > >  > #33 0xc02d3de7 in physio_done (wk=0xc110ec24, dummy=0x0)
 > >  >     at /home/rpaulo/netbsd/src/sys/kern/kern_physio.c:207
 > >  > 207                     wakeup(mbp);
 > >  
 > >  - "p *bp" at frame #33, please.
 > 
 > (gdb) print *bp
 > $1 = {b_u = {u_actq = {tqe_next = 0xdeadbeef, tqe_prev = 0xc110eb90}, 
 >     u_work = {wk_entry = {sqe_next = 0xdeadbeef}}}, b_interlock = {
 >     lock_data = 1, 
 >     lock_file = 0xc04c7320 "/home/rpaulo/netbsd/src/sys/kern/kern_physio.c", 
 >     unlock_file = 0xc04c89c0 "/home/rpaulo/netbsd/src/sys/kern/kern_synch.c", 
 >     lock_line = 160, unlock_line = 525, list = {tqe_next = 0x0, 
 >       tqe_prev = 0xc04f9cd0}, lock_holder = 0}, b_flags = 8388624, 
 >   b_error = 0, b_prio = 1, b_bufsize = -559038737, b_bcount = -559038737, 
 >   b_resid = -559038737, can not access 0xdeadbeef, invalid translation (invalid PDE)
 > can not access 0xdeadbeef, invalid translation (invalid PDE)
 > can not access 0xdeadbeef, invalid translation (invalid PDE)
 > can not access 0xdeadbeef, invalid translation (invalid PDE)
 > can not access 0xdeadbeef, invalid translation (invalid PDE)
 > can not access 0xdeadbeef, invalid translation (invalid PDE)
 > b_dev = 4294967295, b_un = {
 >     b_addr = 0xdeadbeef <Address 0xdeadbeef out of bounds>}, 
 >   b_blkno = -2401053088876216593, b_rawblkno = -2401053088876216593, 
 >   b_iodone = 0xdeadbeef, b_proc = 0xdeadbeef, b_vp = 0xdeadbeef, b_dep = {
 >     lh_first = 0x0}, b_saveaddr = 0xdeadbeef, b_fspriv = {
 >     bf_private = 0xdeadbeef, bf_dcookie = -2401053088876216593}, b_hash = {
 >     le_next = 0xdeadbeef, le_prev = 0xdeadbeef}, b_vnbufs = {
 >     le_next = 0xdeadbeef, le_prev = 0xdeadbeef}, b_freelist = {
 >     tqe_next = 0xdeadbeef, tqe_prev = 0xdeadbeef}, b_lblkno = -1, 
 >   b_freelistindex = 1}
 
 seems very weird.
 can you provide the dump?
 
 YAMAMOTO Takashi