From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 14 May 2003 15:11:53 -0400 (EDT) From: Rik van Riel Subject: Re: Race between vmtruncate and mapped areas? In-Reply-To: <127820000.1052939265@baldur.austin.ibm.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Dave McCracken Cc: Andrew Morton , mika.penttila@kolumbus.fi, linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Wed, 14 May 2003, Dave McCracken wrote: > --On Wednesday, May 14, 2003 15:04:55 -0400 Rik van Riel > wrote: > > >> Not to mention they could end up being outside of any VMA, > >> meaning there's no sane way to deal with them. > > > > I hate to follow up to my own email, but the fact that > > they're not in any VMA could mean we leak these pages > > at exit() time. > > Well, they are still inside the vma. Truncate doesn't shrink the vma. It > just generates SIGBUS when the app tries to fault the pages in. Right, I forgot about that. Forget the memory leak and security bug theory, then ;))) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org