From: Stephen Boyd <sboyd@codeaurora.org>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: linux-kernel@vger.kernel.org,
Intel Linux Wireless <ilw@linux.intel.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
Wey-Yi Guy <wey-yi.w.guy@intel.com>
Subject: [PATCH 2/9] iwlwifi: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning
Date: Thu, 12 May 2011 16:50:05 -0700 [thread overview]
Message-ID: <1305244212-19183-3-git-send-email-sboyd@codeaurora.org> (raw)
In-Reply-To: <1305244212-19183-1-git-send-email-sboyd@codeaurora.org>
Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following
warning:
In file included from arch/x86/include/asm/uaccess.h:573,
from include/net/checksum.h:25,
from include/linux/skbuff.h:28,
from drivers/net/wireless/iwlwifi/iwl-agn-rs.c:28:
In function 'copy_from_user',
inlined from 'rs_sta_dbgfs_scale_table_write' at
drivers/net/wireless/iwlwifi/iwl-agn-rs.c:3099:
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: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/net/wireless/iwlwifi/iwl-agn-rs.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index d03b473..abcc9f2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -3087,7 +3087,7 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file,
struct iwl_lq_sta *lq_sta = file->private_data;
struct iwl_priv *priv;
char buf[64];
- int buf_size;
+ size_t buf_size;
u32 parsed_rate;
struct iwl_station_priv *sta_priv =
container_of(lq_sta, struct iwl_station_priv, lq_sta);
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2011-05-12 23:50 UTC|newest]
Thread overview: 10+ 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 ` Stephen Boyd [this message]
2011-05-13 0:02 ` [PATCH 2/9] iwlwifi: " wwguy
2011-05-12 23:50 ` [PATCH 6/9] Bluetooth: " Stephen Boyd
[not found] ` <1305244212-19183-7-git-send-email-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2011-05-13 21:06 ` Gustavo F. Padovan
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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