lkml.org 
[lkml]   [2013]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECK
Hi all,

On Wed, 27 Feb 2013 14:19:16 -0800 "H. Peter Anvin" <hpa@zytor.com> wrote:
>
> Although some of the cases I have seen being flagged as "false
> positives" have been real bugs.

[hijacking the thread :-)]

I have been getting this warning for a very long time ( which would be an
error if CONFIG_DEBUG_STRICT_USER_COPY_CHECK was set):

i386 defconfig
i386-linux-gcc (GCC) 4.6.3

In file included from arch/x86/include/asm/uaccess.h:537:0,
from include/linux/uaccess.h:5,
from include/linux/highmem.h:8,
from include/linux/pagemap.h:10,
from fs/binfmt_misc.c:27:
arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.2':
arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default]

--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2013-02-28 00:01    [W:5.862 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site