linux-kernel - Re: [PATCH 02/10] zcache: fix refcount leak

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:	Tue, 19 Jun 2012 15:06:53 -0500
From:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
To:	Dan Magenheimer <dan.magenheimer@...cle.com>
CC:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	Konrad Wilk <konrad.wilk@...cle.com>,
	Nitin Gupta <ngupta@...are.org>
Subject: Re: [PATCH 02/10] zcache: fix refcount leak

On 06/19/2012 02:49 PM, Dan Magenheimer wrote:

> My preference would be to fix it the opposite way, by
> checking and ignoring zcache_host in zcache_put_pool.
> The ref-counting is to ensure that a client isn't
> accidentally destroyed while in use (for multiple-client
> users such as ramster and kvm) and since zcache_host is a static
> struct, it should never be deleted so need not be ref-counted.


If we do that, we'll need to comment it.  If we don't, it won't be
obvious why we are refcounting every zcache client except one.  It'll
look like a bug.

--
Seth

--
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/