ciao

dopo aver messo l'ultimo kernel su una mia macchina ottengo spesso questo errore:

codice:
------------[ cut here ]------------
kernel BUG at mm/rmap.c:493!
invalid operand: 0000 [#1]
PREEMPT SMP 
Modules linked in:
CPU:    0
EIP:    0060:[<c0156d39>]    Not tainted VLI
EFLAGS: 00010286   (2.6.12.2) 
EIP is at page_remove_rmap+0x39/0x50
eax: ffffffff   ebx: d3e3021c   ecx: 08080000   edx: c13f1000
esi: c13f1000   edi: 08087000   ebp: 00000000   esp: d6509dac
ds: 007b   es: 007b   ss: 0068
Process removepkg (pid: 24140, threadinfo=d6508000 task=df779020)
Stack: d4252d48 d3e30218 c015019d c13f1000 00000000 d68d0080 08088000 08088000 
       08087fff c0150395 c1405900 d68d0080 08080000 08088000 00000000 00008000 
       08088000 08088000 df6a1f3c c01504b6 c1405900 df6a1f3c 08080000 08088000 
Call Trace:
 [<c015019d>] zap_pte_range+0xdd/0x240
 [<c0150395>] unmap_page_range+0x95/0xc0
 [<c01504b6>] unmap_vmas+0xf6/0x280
 [<c0154f5f>] exit_mmap+0x9f/0x190
 [<c011b8b8>] mmput+0x38/0xa0
 [<c0120867>] do_exit+0xb7/0x2d0
 [<c0120b00>] do_group_exit+0x40/0xb0
 [<c012a5b3>] get_signal_to_deliver+0x233/0x340
 [<c01031ab>] do_signal+0x9b/0x130
 [<c012a750>] sigprocmask+0x60/0xd0
 [<c012a846>] sys_rt_sigprocmask+0x86/0x110
 [<c0115e10>] do_page_fault+0x0/0x5d5
 [<c0103277>] do_notify_resume+0x37/0x3c
 [<c0103436>] work_notifysig+0x13/0x15
Code: f0 83 42 08 ff 0f 98 c0 84 c0 74 1b 8b 42 08 40 78 19 c7 04 24 10 00 00 00 b8 ff ff ff ff 89 44 24 04 e8 8b 05 ff ff 83 c4 08 c3 <0f> 0b ed 01 26 42 45 c0 eb dd 0f 0b ea 01 26 42 45 c0 eb c1 8d 
 <6>note: removepkg[24140] exited with preempt_count 1
secondo voi è un baco nel kernel o è la mia ram scarsa?

grazie ...