lkml.org 
[lkml]   [2011]   [May]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 7/9] ASoC: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning
From
Date
On Thu, 2011-05-12 at 16:50 -0700, Stephen Boyd wrote:
> Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following
> warning:
>
> In file included from arch/x86/include/asm/uaccess.h:573,
> from include/linux/poll.h:14,
> from include/sound/pcm.h:29,
> from include/sound/ac97_codec.h:31,
> from sound/soc/soc-core.c:34:
> In function 'copy_from_user',
> inlined from 'codec_reg_write_file' at
> sound/soc/soc-core.c:252:
> arch/x86/include/asm/uaccess_64.h:65:
> warning: call to 'copy_from_user_overflow' declared with
> attribute warning: copy_from_user() buffer size is not provably
> correct
>
> presumably due to buf_size being signed causing GCC to fail to
> see that buf_size can't become negative.
>
> Cc: Liam Girdwood <lrg@slimlogic.co.uk>
> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

Acked-by: Liam Girdwood <lrg@ti.com>



\
 
 \ /
  Last update: 2011-05-16 18:29    [W:0.149 / U:4.260 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site