From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junling Zheng <zhengjunling@huawei.com>
Subject: Re: [RFC] [PATCH] net: socket: Fix the wrong returns for recvmsg
 and sendmsg
Date: Tue, 2 Jun 2015 14:43:54 +0800
Message-ID: <556D50AA.4000005@huawei.com>
References: <1433150880-9976-1-git-send-email-zhengjunling@huawei.com> <20150602012154.GB23370@kroah.com> <556D2B8C.9010108@huawei.com> <20150601.222357.122000161676177828.davem@davemloft.net> <20150602062751.GA3912@kroah.com>
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Cc: <lizefan@huawei.com>, <viro@zeniv.linux.org.uk>,
	<xuhanbing@huawei.com>, <stable@vger.kernel.org>,
	<netdev@vger.kernel.org>
To: Greg KH <gregkh@linuxfoundation.org>,
	David Miller <davem@davemloft.net>
Return-path: <stable-owner@vger.kernel.org>
In-Reply-To: <20150602062751.GA3912@kroah.com>
Sender: stable-owner@vger.kernel.org
List-Id: netdev.vger.kernel.org

On 2015/6/2 14:27, Greg KH wrote:
> On Mon, Jun 01, 2015 at 10:23:57PM -0700, David Miller wrote:
>> From: Junling Zheng <zhengjunling@huawei.com>
>> Date: Tue, 2 Jun 2015 12:05:32 +0800
>>
>>> So, the problem commit is 281c9c36 (net: compat: Update
>>> get_compat_msghdr() to match copy_msghdr_from_user() behaviour),
>>> which fixes db31c55a6fb2 and brings the get_compat_msghdr() in line
>>> with copy_msghdr_from_user().
>>
>> Upstream this got fixed by:
>>
>> 08adb7dabd4874cc5666b4490653b26534702ce0
>>
>> So the part that makes us not unconditionally return -EFAULT needs
>> to be backported, and that's probably equivalent to the patch
>> your proposed which therefore should be applied.
> 
> Ok, thanks, now applied.
> 

Maybe other stable version also needs this fix:)

> greg k-h
> 
> .
>