From: Liam Girdwood <lrg@slimlogic.co.uk>
To: Stephen Boyd <sboyd@codeaurora.org>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.de>,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: [PATCH 7/9] ASoC: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning
Date: Mon, 16 May 2011 17:26:32 +0100 [thread overview]
Message-ID: <1305563192.3156.7.camel@odin> (raw)
In-Reply-To: <1305244212-19183-8-git-send-email-sboyd@codeaurora.org>
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>
next prev parent reply other threads:[~2011-05-16 16:26 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-12 23:50 [PATCH 0/9] strict user copy checks on x86_64 Stephen Boyd
2011-05-12 23:50 ` [PATCH 1/9] iwlegacy: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning Stephen Boyd
2011-05-13 0:01 ` wwguy
2011-05-13 9:08 ` Stanislaw Gruszka
2011-05-12 23:50 ` [PATCH 2/9] iwlwifi: " Stephen Boyd
2011-05-13 0:02 ` wwguy
2011-05-12 23:50 ` [PATCH 3/9] [SCSI] lpfc: " Stephen Boyd
2011-05-24 13:32 ` James Smart
2011-05-12 23:50 ` [PATCH 4/9] debugfs: " Stephen Boyd
2011-05-13 23:14 ` Greg KH
2011-05-12 23:50 ` [PATCH 5/9] kprobes: " Stephen Boyd
2011-05-13 0:29 ` Masami Hiramatsu
2011-05-12 23:50 ` [PATCH 6/9] Bluetooth: " Stephen Boyd
2011-05-13 21:06 ` Gustavo F. Padovan
2011-05-12 23:50 ` [PATCH 7/9] ASoC: " Stephen Boyd
2011-05-16 16:26 ` Liam Girdwood [this message]
2011-05-16 20:22 ` Mark Brown
2011-05-12 23:50 ` [PATCH 8/9] x86: Implement strict user copy checks for x86_64 Stephen Boyd
2011-05-13 10:15 ` Ingo Molnar
2011-05-12 23:50 ` [PATCH 9/9] Consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS Stephen Boyd
2011-05-13 0:55 ` Chris Metcalf
2011-05-13 7:31 ` Ingo Molnar
2011-05-13 16:55 ` Arnd Bergmann
2011-05-24 21:29 ` [PATCH 0/9] strict user copy checks on x86_64 Stephen Boyd
2011-05-24 23:33 ` H. Peter Anvin
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