I built a UBC kernel using diff.ubc.20001028.1 and tried to build
mozilla.  The machine (i386, 512MB) got a panic.
I ran cvs update on the mozilla source tree just before starting the
build, it it matters.



$ gdb syssrc-ubc/sys/arch/i386/compile/EEN/netbsd.gdb
GNU gdb 4.17
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386--netbsd"...
(gdb) targ kco netbsd.1.core
panic: softdep_iodone_pagecache: resid < 0, vp %p lbn 0x%lx fakebp %p
#0  0x104 in ?? ()
(gdb) info st
#0  0x104 in ?? ()
#1  0xc02cedef in cpu_reboot (howto=260, bootstr=0x0)
    at ../../../../arch/i386/i386/machdep.c:1320
#2  0xc01a77b9 in panic () at ../../../../kern/subr_prf.c:240
#3  0xc02a033c in softdep_disk_write_complete (bp=0xca090fe0)
    at ../../../../ufs/ffs/ffs_softdep.c:3183
#4  0xc01bbd23 in biodone (bp=0xca090fe0) at ../../../../kern/vfs_bio.c:935
#5  0xc02e5289 in wddone (v=0xc0dc0000) at ../../../../dev/ata/wd.c:620
#6  0xc02e7269 in wdc_ata_bio_done (chp=0xc0dc58b4, xfer=0xc0dc7000)
    at ../../../../dev/ata/ata_wdc.c:657
#7  0xc02e714c in wdc_ata_bio_intr (chp=0xc0dc58b4, xfer=0xc0dc7000, irq=1)
    at ../../../../dev/ata/ata_wdc.c:598
#8  0xc015d2dd in wdcintr (arg=0xc0dc58b4) at ../../../../dev/ic/wdc.c:690
#9  0xc0303fda in pciide_compat_intr (arg=0xc0dc58b4)
    at ../../../../dev/pci/pciide.c:735
#10 0xc0101934 in Xintr14 ()
(gdb) source /sys/gdbscripts/xps
(gdb) xps
              proc   pid     flag st              wchan comm
        0xe57177f8 16902     4006  4                  0 cc1plus
        0xe5717e48 16900     4086  4         0xe5717e48 c++ (wait)
        0xe57174d0 16878     4086  4         0xe57174d0 gmake (wait)
        0xe57171a8 16853     4086  4         0xe57171a8 sh (wait)
        0xe5717b20 16848     4086  4         0xe5717b20 gmake (wait)
        0xe571798c 15617     4086  4         0xe571798c sh (wait)
        0xe5717cb4 15612     4086  4         0xe5717cb4 gmake (wait)
        0xe5681984 11579     4086  4         0xe5681984 sh (wait)
        0xe56d6338 10446     4086  4         0xc04a2fac emacs (select)
        0xe5681cac  3436     5086  4         0xe5681cac gmake (wait)
        0xe5681e40  3031     4086  4         0xe5681e40 bash (wait)
        0xe5643ca8  3030      184  4         0xc04a2fac sshd (select)
        0xe5681b18  1914       84  4         0xc04a2fac xconsole (select)
        0xe5189e34  1903       84  4         0xc04a2fac xdm (select)
        0xe568100c  1100       84  4         0xc04a2fac ssh-agent (select)
        0xe571733c   417     4086  4         0xc04a2fac emacs (select)
        0xe5717014   350     4086  4         0xe49568e8 bash (ttyin)
        0xe56d6e44   349      184  4         0xc04a2fac sshd (select)
        0xe56817f0   304       84  4         0xc04a2fac ssh-agent (select)
        0xe5189ca0   276     4086  4         0xe4956008 getty (ttyin)
        0xe568165c   274       84  4         0xc04845d8 cron (nanosleep)
        0xe56814c8   271       84  4         0xc04a2fac inetd (select)
---Type <return> to continue, or q <return> to quit---
        0xe5681334   266       84  4         0xe569135c sendmail (pause)
        0xe56811a0   263       84  4         0xc04a2fac sshd (select)
        0xe5643b14   261     4084  4         0xc04a2fac XFree86 (select)
        0xe5643e3c   256       85  4         0xe56616a0 xdm (pause)
        0xe5643008   246       84  4         0xc04a2fac lpd (select)
        0xe56434c4   233       84  4                  0 ntpd (pause)
        0xe5643658   216       84  4         0xc04a2fac amd (select)
        0xe5643980   200       84  4         0xc0e4a200 nfsd (nfsd)
        0xe56437ec   199       84  4         0xc0e86000 nfsd (nfsd)
        0xe564319c   198       84  4         0xc0e86200 nfsd (nfsd)
        0xe51bc198   197       84  4         0xc0e86400 nfsd (nfsd)
        0xe5643330   195       84  4         0xc04a2fac nfsd (select)
        0xe51bc654   185       84  4         0xc04a2fac mountd (select)
        0xe51bce38   157    20284  3         0xc04bdd4c nfsio (nfsidl)
        0xe51bcca4   156    20284  3         0xc04bdd48 nfsio (nfsidl)
        0xe51bcb10   155    20284  3         0xc04bdd44 nfsio (nfsidl)
        0xe51bc97c   154    20284  3         0xc04bdd40 nfsio (nfsidl)
        0xe51bc7e8   150       84  4         0xe5623c7c mount_mfs (mfsidl)
        0xe51bc4c0   141       84  4         0xc04a2fac ypbind (select)
        0xe51bc32c   136       84  4         0xc04a2fac rpcbind (select)
        0xe51bc004   125       84  4         0xc04a2fac syslogd (select)
        0xe5189b0c     8    20204  7                  0 aiodoned (aiodoned)
        0xe5189978     7    20204  3         0xc04846d4 ioflush (syncer)
---Type <return> to continue, or q <return> to quit---
        0xe51897e4     6    20204  3         0xc04a24cc reaper (reaper)
        0xe5189650     5    20204  3         0xc04bf748 pagedaemon (pgdaemon)
        0xe51894bc     4    20204  3         0xc0db50c4 cardslot1 (cardslotev)
        0xe5189328     3    20204  3         0xc0db51c4 cardslot0 (cardslotev)
        0xe5189194     2    20204  3         0xc0dc9238 usb0 (usbevt)
        0xe5189000     1     4084  4         0xe5189000 init (wait)
        0xc04a0aa0     0    20204  3         0xc04a0aa0 swapper (scheduler)
              proc   pid     flag st              wchan comm
(gdb) print curproc
$1 = (struct proc *) 0xe5189b0c
(gdb) 

--
IWAMOTO Toshihiro