netdev - Re: [Bugme-new] [Bug 32832] New: shutdown(2) does not fully shut down socket any more

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: <20110413114709.32f5931e@nehalam>
Date:	Wed, 13 Apr 2011 11:47:09 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	dbaluta@...acom.com, eric.dumazet@...il.com,
	akpm@...ux-foundation.org, netdev@...r.kernel.org,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, kees@...flux.net
Subject: Re: [Bugme-new] [Bug 32832] New: shutdown(2) does not fully shut
 down socket any more

On Wed, 13 Apr 2011 10:43:17 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: Daniel Baluta <dbaluta@...acom.com>
> Date: Wed, 13 Apr 2011 14:57:18 +0300
> 
> > Cyril's use case looks suspect. I don't think that this is a good
> > reason for reverting this commit.
> 
> I complete disagree.
> 
> Something that worked perfectly fine, probably for years, we broke.
> 
> We simply cannot do that, especially since we do not have a reasonable
> alternative at this time.
> 
> Adding SO_REUSEPORT is a long range option, and not something that
> will provide a fix for users right now.
> 
> So please don't even pretend to suggest that we shouldn't fix this
> with a revert unless a simple, obvious, kernel fix presents itself.

Just to echo what Dave said.
Even though the semantics of this is not documented in some standard,
applications have been built on Linux expecting a certain behavior.
If you want to change what happens in this case, you have to have a
really good reason (like crash, security hole, or standards violation).
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html