From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: mikey@neuling.org, netdev@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org, luto@amacapital.net,
linuxppc-dev@ozlabs.org, anton@samba.org,
trinity@vger.kernel.org, torvalds@linux-foundation.org
Subject: Re: [PATCH 5/5] net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg
Date: Wed, 05 Jun 2013 22:00:05 -0700 (PDT) [thread overview]
Message-ID: <20130605.220005.1262211330700518675.davem@davemloft.net> (raw)
In-Reply-To: <1370493325.24311.332.camel@edumazet-glaptop>
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 05 Jun 2013 21:35:25 -0700
> On Thu, 2013-06-06 at 12:56 +1000, Michael Neuling wrote:
>> On Thu, May 23, 2013 at 7:07 AM, Andy Lutomirski <luto@amacapital.net> wrote:
>> > MSG_CMSG_COMPAT is (AFAIK) not intended to be part of the API --
>> > it's a hack that steals a bit to indicate to other networking code
>> > that a compat entry was used. So don't allow it from a non-compat
>> > syscall.
>>
>> Dave & Linus
>>
>> This is causing a regression on 64bit powerpc with 32bit usermode.
>> When I hit userspace, udev is broken and I suspect all networking is
>> broken as well.
>>
>> Can we please revert 1be374a0518a288147c6a7398792583200a67261 upstream?
>>
>
> It seems to also break x86_64, if using 32bit usermode.
Sorry, I only merged this because Ingo Molnar and others kept beating
me over the head about merging this fix.
Linus please revert, and I will not bow to such pressure in the future,
I should know better.
prev parent reply other threads:[~2013-06-06 5:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1369177867.git.luto@amacapital.net>
[not found] ` <aa015609319786835bcab445d507faa75c11f111.1369177867.git.luto@amacapital.net>
2013-06-06 2:56 ` [PATCH 5/5] net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg Michael Neuling
2013-06-06 3:01 ` Anton Blanchard
2013-06-06 3:29 ` Stephen Rothwell
2013-06-06 5:38 ` [PATCH] net: Unbreak compat_sys_{send,recv}msg Andy Lutomirski
2013-06-06 5:48 ` Michael Neuling
2013-06-06 7:26 ` David Miller
2013-06-06 13:45 ` Eric Dumazet
2013-06-06 18:53 ` David Miller
2013-06-06 4:35 ` [PATCH 5/5] net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg Eric Dumazet
2013-06-06 5:00 ` David Miller [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130605.220005.1262211330700518675.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=anton@samba.org \
--cc=eric.dumazet@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=luto@amacapital.net \
--cc=mikey@neuling.org \
--cc=netdev@vger.kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=trinity@vger.kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).