6.0-current panic

Dual Xeon 2.4 with 4Gb ram:

FreeBSD 6.0-CURRENT #0: Sun Jun 26 16:24:56 CEST 2005

panic: Memory modified after free 0xca97c000(256) val=ca8e4e00 _at_ 
0xca97c000

cpuid = 3
KDB: enter: panic
[thread pid 75 tid 100078 ]
Stopped at      kdb_enter+0x2b: nop
db> trace
Tracing pid 75 tid 100078 td 0xc5813a80
kdb_enter(c086b8b2) at kdb_enter+0x2b
panic(c0885efb,ca97c000,100,ca8e4e00,ca97c000) at panic+0x127
trash_ctor(ca97c000,100,0,0,e9b09c38) at trash_ctor+0x2f
trash_fini(ca97c000,100) at trash_fini+0x12
zone_drain(c104ac60) at zone_drain+0x170
zone_foreach(c0794518,e9b09cec,c07a5f8f,c5813a80,e9b09c74) at
zone_foreach+0x37
uma_reclaim(c5813a80,e9b09c74,0,c093f5a0,e9b09c80) at uma_reclaim+0x12
vm_pageout_scan(0,c0994280,0,c0887cae,5c3) at vm_pageout_scan+0x103
vm_pageout(0,e9b09d38,0,c07a6d48,0) at vm_pageout+0x2c3
fork_exit(c07a6d48,0,e9b09d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xe9b09d6c, ebp = 0 ---
db>


Regards,
gg.