Ok asked somebody in the know and he suggested adding a backtrace so here we
go:
Incidently this occured as I was using an NFS mount from this server.
FreeBSD aftershock.xtaz.co.uk 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Wed Mar 19
10:53:19 GMT 2003
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/AFTERSHOCK i386
Script started on Thu Mar 20 10:26:59 2003
[EMAIL PROTECTED] crash]# gdb -k /usr/obj/usr/src/sys/AFTERSHOCK/kernel.debug
vmcore.0
GNU gdb 5.2.1 (FreeBSD)
Copyright 2002 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-undermydesk-freebsd"...
panic: bremfree: removing a buffer not on a queue
panic messages:
---
panic: softdep_disk_io_initiation: read
syncing disks, buffers remaining... panic: bremfree: removing a buffer not on
a queue
Uptime: 15h46m0s
Dumping 512 MB
ata0: resetting devices ..
done
16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320
336 352 368 384 400 416 432 448 464 480 496
---
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:239
239 dumping++;
(kgdb) where
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:239
#1 0xc0223c13 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:371
#2 0xc0223f13 in panic () at /usr/src/sys/kern/kern_shutdown.c:542
#3 0xc0266932 in bremfreel (bp=0xce6169e8) at /usr/src/sys/kern/vfs_bio.c:636
#4 0xc0266815 in bremfree (bp=0x0) at /usr/src/sys/kern/vfs_bio.c:618
#5 0xc0268c18 in vfs_bio_awrite (bp=0x0) at /usr/src/sys/kern/vfs_bio.c:1687
#6 0xc02f4502 in ffs_fsync (ap=0xd7b92a54)
at /usr/src/sys/ufs/ffs/ffs_vnops.c:255
#7 0xc02f36de in ffs_sync (mp=0xc433a800, waitfor=2, cred=0xc150af00,
td=0xc03d23a0)
at vnode_if.h:612
#8 0xc027c63b in sync (td=0xc03d23a0, uap=0x0)
at /usr/src/sys/kern/vfs_syscalls.c:138
#9 0xc0223773 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:280
#10 0xc0223f13 in panic () at /usr/src/sys/kern/kern_shutdown.c:542
#11 0xc02ecc0c in softdep_disk_io_initiation (bp=0xce6169e8)
at /usr/src/sys/ufs/ffs/ffs_softdep.c:3465
#12 0xc026f87d in cluster_wbuild (vp=0xc50c7000, size=16384, start_lbn=12,
len=2) at buf.h:422
#13 0xc0268c09 in vfs_bio_awrite (bp=0xce59ce90)
at /usr/src/sys/kern/vfs_bio.c:1681
#14 0xc02f4502 in ffs_fsync (ap=0xd7b92c48)
at /usr/src/sys/ufs/ffs/ffs_vnops.c:255
#15 0xc02f36de in ffs_sync (mp=0xc433a800, waitfor=3, cred=0xc150af00,
td=0xc43513c0)
at vnode_if.h:612
#16 0xc027beda in sync_fsync (ap=0xd7b92cd0)
at /usr/src/sys/kern/vfs_subr.c:3493
#17 0xc0278bde in sched_sync () at vnode_if.h:612
#18 0xc02105a4 in fork_exit (callout=0xc0278a60 <sched_sync>, arg=0x0,
frame=0x0)
at /usr/src/sys/kern/kern_fork.c:875
(kgdb) bt full
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:239
No locals.
#1 0xc0223c13 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:371
No locals.
#2 0xc0223f13 in panic () at /usr/src/sys/kern/kern_shutdown.c:542
td = (struct thread *) 0xc43513c0
bootopt = 260
newpanic = 0
buf = "bremfree: removing a buffer not on a queue", '\0' <repeats 213
times>
#3 0xc0266932 in bremfreel (bp=0xce6169e8) at /usr/src/sys/kern/vfs_bio.c:636
old_qindex = 0
#4 0xc0266815 in bremfree (bp=0x0) at /usr/src/sys/kern/vfs_bio.c:618
No locals.
#5 0xc0268c18 in vfs_bio_awrite (bp=0x0) at /usr/src/sys/kern/vfs_bio.c:1687
i = 1
j = 0
lblkno = 12
vp = (struct vnode *) 0xc50c7000
ncl = -832476696
nwritten = -832476696
size = 16384
maxcl = 8
#6 0xc02f4502 in ffs_fsync (ap=0xd7b92a54)
at /usr/src/sys/ufs/ffs/ffs_vnops.c:255
vp = (struct vnode *) 0x0
ip = (struct inode *) 0xce6169e8
bp = (struct buf *) 0xce6169e8
nbp = (struct buf *) 0xc50c7000
error = 0
wait = 0
passes = 4
skipmeta = 0
lbn = 14
#7 0xc02f36de in ffs_sync (mp=0xc433a800, waitfor=2, cred=0xc150af00,
td=0xc03d23a0)
at vnode_if.h:612
nvp = (struct vnode *) 0xc5054000
vp = (struct vnode *) 0xc50c7000
devvp = (struct vnode *) 0xc50c7000
ip = (struct inode *) 0x0
ump = (struct ufsmount *) 0xc434dc00
fs = (struct fs *) 0xc4265800
---Type <return> to continue, or q <return> to quit---
error = 0
count = 0
wait = 0
lockreq = 18
allerror = 0
#8 0xc027c63b in sync (td=0xc03d23a0, uap=0x0)
at /usr/src/sys/kern/vfs_syscalls.c:138
mp = (struct mount *) 0xc433a800
nmp = (struct mount *) 0x0
asyncflag = 0
#9 0xc0223773 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:280
bp = (struct buf *) 0x0
iter = -1051614964
nbusy = -1051614976
pbusy = -1070011433
subiter = -1051614976
#10 0xc0223f13 in panic () at /usr/src/sys/kern/kern_shutdown.c:542
td = (struct thread *) 0xc43513c0
bootopt = 256
newpanic = 1
buf = "bremfree: removing a buffer not on a queue", '\0' <repeats 213
times>
#11 0xc02ecc0c in softdep_disk_io_initiation (bp=0xce6169e8)
at /usr/src/sys/ufs/ffs/ffs_softdep.c:3465
wk = (struct worklist *) 0xce6169e8
nextwk = (struct worklist *) 0xc042dfc0
indirdep = (struct indirdep *) 0xc
inodedep = (struct inodedep *) 0x0
#12 0xc026f87d in cluster_wbuild (vp=0xc50c7000, size=16384, start_lbn=12,
len=2) at buf.h:422
bp = (struct buf *) 0xce5927d8
tbp = (struct buf *) 0xce6169e8
i = 1
j = 4
totalwritten = 0
dbsize = 32
#13 0xc0268c09 in vfs_bio_awrite (bp=0xce59ce90)
at /usr/src/sys/kern/vfs_bio.c:1681
i = 2
j = 0
lblkno = 11
vp = (struct vnode *) 0xc50c7000
ncl = 2
nwritten = 2
---Type <return> to continue, or q <return> to quit---
size = 16384
maxcl = 8
#14 0xc02f4502 in ffs_fsync (ap=0xd7b92c48)
at /usr/src/sys/ufs/ffs/ffs_vnops.c:255
vp = (struct vnode *) 0xce59ce90
ip = (struct inode *) 0x2
bp = (struct buf *) 0x2
nbp = (struct buf *) 0xc50c7000
error = 0
wait = 0
passes = 4
skipmeta = 0
lbn = 14
#15 0xc02f36de in ffs_sync (mp=0xc433a800, waitfor=3, cred=0xc150af00,
td=0xc43513c0)
at vnode_if.h:612
nvp = (struct vnode *) 0xc5054000
vp = (struct vnode *) 0xc50c7000
devvp = (struct vnode *) 0xc50c7000
ip = (struct inode *) 0x0
ump = (struct ufsmount *) 0xc434dc00
fs = (struct fs *) 0xc4265800
error = 0
count = 0
wait = 0
lockreq = 18
allerror = 0
#16 0xc027beda in sync_fsync (ap=0xd7b92cd0)
at /usr/src/sys/kern/vfs_subr.c:3493
syncvp = (struct vnode *) 0x0
mp = (struct mount *) 0xc433a800
td = (struct thread *) 0xc43513c0
error = -675730224
asyncflag = 0
#17 0xc0278bde in sched_sync () at vnode_if.h:612
slp = (struct synclist *) 0xd7b92cd0
vp = (struct vnode *) 0x0
mp = (struct mount *) 0x0
starttime = 1048152974
td = (struct thread *) 0xc43513c0
#18 0xc02105a4 in fork_exit (callout=0xc0278a60 <sched_sync>, arg=0x0,
frame=0x0)
at /usr/src/sys/kern/kern_fork.c:875
td = (struct thread *) 0x0
---Type <return> to continue, or q <return> to quit---
p = (struct proc *) 0xc434f800
(kgdb) quit
[EMAIL PROTECTED] crash]# exit
exit
Script done on Thu Mar 20 10:27:43 2003
---
Matt ([EMAIL PROTECTED])
http://www.xtaz.co.uk/
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