panic: sbflush_locked: cc 0 || mb 0xffffff002facf100 || mbcnt 512

[Artur]

Hello

  i'm on Freebsd 5.4
  on tuesday my server with amd64 (3000+)
  has started to panic: fatal trap 12
  so i downloaded new sources and everything was ok until today
  4 hours ago server hangs up with info
  panic: sbflush_locked: cc 0 || mb 0xffffff002facf100 || mbcnt 512
  

  Now it's reboot nonstop
  5 min uptime, sometimes 40 min uptime

  what's wrong ?
  which data i should show?

Dump header from device /dev/ad4s1b
  Architecture: amd64
  Architecture Version: 16777216
  Dump Length: 1073676288B (1023 MB)
  Blocksize: 512
  Dumptime: Mon Jul 18 12:26:46 2005
  Hostname: sergiey.limeart.pl
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 5.4-STABLE #0: Tue Jul 12 12:39:36 CEST 2005
    root@:/usr/obj/usr/src/sys/THEBEST
  Panic String: sk_jfree: asked to free buffer that we don't manage!
  Dump Parity: 3048816918
  Bounds: 3
  Dump Status: good


Dump header from device /dev/ad4s1b
  Architecture: amd64
  Architecture Version: 16777216
  Dump Length: 1073676288B (1023 MB)
  Blocksize: 512
  Dumptime: Mon Jul 18 12:41:00 2005
  Hostname: sergiey.limeart.pl
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 5.4-STABLE #0: Tue Jul 12 12:39:36 CEST 2005
    root@:/usr/obj/usr/src/sys/THEBEST
  Panic String: general protection fault
  Dump Parity: 1386446444
  Bounds: 4
  Dump Status: good

Dump header from device /dev/ad4s1b
  Architecture: amd64
  Architecture Version: 16777216
  Dump Length: 1073676288B (1023 MB)
  Blocksize: 512
  Dumptime: Mon Jul 18 12:48:43 2005
  Hostname: sergiey.limeart.pl
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 5.4-STABLE #0: Tue Jul 12 12:39:36 CEST 2005
    root@:/usr/obj/usr/src/sys/THEBEST
  Panic String: sbflush_locked: cc 0 || mb 0xffffff002fb42700 || mbcnt 256
  Dump Parity: 1589385234
  Bounds: 5
  Dump Status: good
    
  
Artur