linux-kernel - Re: [PATCH, RFC, v2] shmat: introduce flag SHM_MAP

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]

Message-ID: <20081007112631.GH20740@one.firstfloor.org>
Date:	Tue, 7 Oct 2008 13:26:31 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	"Kirill A. Shutemov" <kirill@...temov.name>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Ingo Molnar <mingo@...hat.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH, RFC, v2] shmat: introduce flag SHM_MAP_HINT

> I want say that we shouldn't do this check if shmaddr is a search hint.
> I'm not sure that check is unneeded if shmadd is the exact address.

mmap should fail in this case because it does the same check for 
MAP_FIXED. Obviously it cannot succeed when there is already something
else there.

-Andi

-- 
ak@...ux.intel.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/