Subject: Re: savecore -c crashes kernel (-current on i386)
To: Markus W Kilbinger <mk@kilbi.de>
From: Geoff Wing <gcw@pobox.com>
List: current-users
Date: 10/08/2007 17:31:46
On Monday 2007-10-08 09:04 +0200, Juergen Hannken-Illjes output:
:> > (2007-10-08 05:00 UTC)
:> > Some recent change is causing my system to crash with "savecore -c",
:> > however during the OS coredump it's failing (and rebooting).
:> > 
:> > >From DDB, it gives something like:
:> > 
:> > uvm_fault  in  savecore:
:> > 
:> > specificdata_getspecific()  + 0x17
:> > mount_getspecific()   + 0x26
:> > fscow_run
:> > spec_strategy
:show buf <1. arg of fscow_run>
:show vnode <vnode og this buf>

from a "boot -s" on my i386 (C2Duo w/ 2G mem)

(Hopefully I haven't fatfingered too much)

show buf cdde43e4
  vp 0xcde44e70 lblkno 0xadc0 blkno 0xadc0 raw 560adc0 dev 0x01
  error 0 flag 0x4020034 (ASYNC,BUSY,SCANNED,CACHE,VFLUSH)
  bufsize 0x800 bcount 0x800 resid 0x0
  data 0xccb6b800 saveaddr 0x0 dep 0x0 iodone 0x0

show vnode cde44e70
 OBJECT 0xcde44e70 locked=0 pgops=0xc053246c npages=0 refs=2
 VNODE flags 80<LOCKSWORK>
 mp 0xc3240000 numoutput 1 size 0x81000000 writesize 0x81000000
 data 0xcde435e0 usecount 2 writecount 1 holdcnt 5 numoutput 1
 tag VT_UFS(1) type VBLK(3) mount 0xc324e000 typedate 0xc325fde0