linux-kernel - Re: mm: pages are not freed from lru_add

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 2 May 2016 16:39:35 +0200
From:	Vlastimil Babka <vbabka@...e.cz>
To:	Dave Hansen <dave.hansen@...el.com>,
	"Odzioba, Lukasz" <lukasz.odzioba@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Cc:	"Shutemov, Kirill" <kirill.shutemov@...el.com>,
	"Anaczkowski, Lukasz" <lukasz.anaczkowski@...el.com>
Subject: Re: mm: pages are not freed from lru_add_pvecs after process
 termination

On 04/27/2016 07:11 PM, Dave Hansen wrote:
> 6. Perhaps don't use the LRU pagevecs for large pages.  It limits the
>     severity of the problem.

I think that makes sense. Being large already amortizes the cost per 
base page much more than pagevecs do (512 vs ~22 pages?).