I got this while the system was swapping quite a bit (silly Gtk+
newsreader + supernews's huge retention == lots of memory used).

FreeBSD blarf.homeip.net 5.0-CURRENT FreeBSD 5.0-CURRENT #5: Wed Aug 14 00:39:15 PDT 
2002     [EMAIL PROTECTED]:/usr/src/sys/i386/compile/ZIPPY_SMP_WITNESS  i386

GNU gdb 5.2.0 (FreeBSD) 20020627
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: bp 0xc4206410 not locked
panic messages:
panic: Most recently used by none

cpuid = 0; lapic.id = 00000000

syncing disks... panic: bremfree: bp 0xc4206410 not locked
cpuid = 0; lapic.id = 00000000
Uptime: 1h20m25s
Dumping 127 MB
ata0: resetting devices ..
 16 32 48 64 80 96 112[CTRL-C to abort] 
#0  doadump () at ../../../kern/kern_shutdown.c:213
213             dumping++;
(kgdb) bt
#0  doadump () at ../../../kern/kern_shutdown.c:213
#1  0xc022188d in boot (howto=260) at ../../../kern/kern_shutdown.c:345
#2  0xc0221aaf in panic () at ../../../kern/kern_shutdown.c:493
#3  0xc0255cf5 in bremfree (bp=0xc4206410) at ../../../kern/vfs_bio.c:633
#4  0xc025bc84 in cluster_wbuild (vp=0xc21beb90, size=8192, start_lbn=12, 
    len=14) at ../../../kern/vfs_cluster.c:801
#5  0xc0257454 in vfs_bio_awrite (bp=0xc4206410)
    at ../../../kern/vfs_bio.c:1620
#6  0xc02e1a51 in ffs_fsync (ap=0xc8a6fb48) at ../../../ufs/ffs/ffs_vnops.c:231
#7  0xc02e104e in ffs_sync (mp=0xc1b1d600, waitfor=2, cred=0xc0bace80, 
    td=0xc03ed9c0) at vnode_if.h:545
#8  0xc0265560 in sync (td=0xc03ed9c0, uap=0x0)
    at ../../../kern/vfs_syscalls.c:129
#9  0xc02214fa in boot (howto=256) at ../../../kern/kern_shutdown.c:254
#10 0xc0221aaf in panic () at ../../../kern/kern_shutdown.c:493
#11 0xc030210c in mtrash_ctor (mem=0xc2599400, size=0, arg=0x0)
    at ../../../vm/uma_dbg.c:135
#12 0xc0302178 in mtrash_fini (mem=0xc2599400, size=1024)
    at ../../../vm/uma_dbg.c:186
#13 0xc03003e5 in zone_drain (zone=0xc0b859c0) at ../../../vm/uma_core.c:646
#14 0xc0300d1b in zone_foreach (zfunc=0xc0300148 <zone_drain>)
    at ../../../vm/uma_core.c:1167
#15 0xc0301c5a in uma_reclaim () at ../../../vm/uma_core.c:1980
#16 0xc02fdb84 in vm_pageout_scan (pass=0) at ../../../vm/vm_pageout.c:653
#17 0xc02fe9b1 in vm_pageout () at ../../../vm/vm_pageout.c:1439
#18 0xc0212330 in fork_exit (callout=0xc02fe784 <vm_pageout>, arg=0x0, 
    frame=0xc8a6fd48) at ../../../kern/kern_fork.c:872
(kgdb) quit

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