From: Vlad Yasevich <vyasevich@xxxxxxxxx>
Date: Wed, 27 Feb 2013 16:00:42 -0500
> On 02/27/2013 03:57 PM, Guenter Roeck wrote:
>> Building sctp may fail with:
>>
>> In function ʽcopy_from_userʼ,
>> inlined from ʽsctp_getsockopt_assoc_statsʼ at
>> net/sctp/socket.c:5656:20:
>> arch/x86/include/asm/uaccess_32.h:211:26: error: call to
>> ʽcopy_from_user_overflowʼ declared with attribute error:
>> copy_from_user()
>> buffer size is not provably correct
>>
>> if built with W=1 due to a missing parameter size validation
>> before the call to copy_from_user.
>>
>> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
>> ---
>> v2: Fix by moving the existing parameter size validation up
>> in the function instead of adding an additional one.
>
> This works too...
>
> Acked-by: Vlad Yasevich <vyasevich@xxxxxxxxx>
I'll apply this and queue it up for -stable, thanks everyone.
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