Re: [TOMOYO 05/15](repost) Domain transition handler functions.

Hello.


YOSHIFUJI Hideaki wrote:
> It is not a good practice.  Please free such objects.
> BTW, how many objects do you have in the list?
It varies from 0 to some thousands,
depending on the policy supplied by the administrator and/or the policy appended by "learning mode".


Peter Zijlstra wrote:
> sounds like a might fine memory leak / dos attack.
TOMOYO Linux keeps the policy in CD-R's manner.
Thus, once an entry is written, it's pointer is valid forever.
TOMOYO Linux's simplicity (singly-linked list with no read_lock) comes from
this "keep the policy in CD-R's manner".
Yes, it is a kind of memory leak, but is controllable.

The kernel no longer requires memory after entering into "enforcing mode".
So, attackers can't do DoS attack after entering into "enforcing mode".


Regards.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [TOMOYO 05/15](repost) Domain transition handler functions.
    • From: Tetsuo Handa <[email protected]>

• References:
  • Re: [TOMOYO 05/15](repost) Domain transition handler functions.
    • From: Tetsuo Handa <[email protected]>
  • Re: [TOMOYO 05/15](repost) Domain transition handler functions.
    • From: Peter Zijlstra <[email protected]>
  • Re: [TOMOYO 05/15](repost) Domain transition handler functions.
    • From: Tetsuo Handa <[email protected]>
  • Re: [TOMOYO 05/15](repost) Domain transition handler functions.
    • From: YOSHIFUJI Hideaki / 吉藤英明 <[email protected]>

• Prev by Date: Re: [TOMOYO 05/15](repost) Domain transition handler functions.
• Next by Date: Re: [Patch / 002](memory hotplug) Callback function to create kmem_cache_node.
• Previous by thread: Re: [TOMOYO 05/15](repost) Domain transition handler functions.
• Next by thread: Re: [TOMOYO 05/15](repost) Domain transition handler functions.
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]