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  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:	Wed, 16 Jan 2008 05:59:21 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	jckn@....net,
	Netfilter Development Mailinglist 
	<netfilter-devel@...r.kernel.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>, netdev@...r.kernel.org,
	bugme-daemon@...zilla.kernel.org
Subject: Re: [Bugme-new] [Bug 9758] New: net_device refcnt bug when NFQUEUEing
 bridged packets

Patrick McHardy wrote:
> Very nice catch, that explains quite a few bug reports about
> refcnt leaks. Your patch looks correct and performs the copying
> in the logically correct place, it would be nicer to keep this
> crap limited to bridge netfilter however.
> 
> What should work is to perform the copying in br_netfilter.c
> at the spots where phsyoutdev is assigned. As an optimization
> we should be able to avoid the copying in most cases by
> checking that the bridge info has a refcount above 1.
> 
> Could you test whether this patch also fixes the problem?


That patch had a bug, we need to set the refcount of the
new bridge info to 1 after performing the copy.


View attachment "x" of type "text/plain" (1576 bytes)

Powered by blists - more mailing lists