Return-path: Received: from mout.kundenserver.de ([212.227.126.130]:57083 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752574AbdCBQsW (ORCPT ); Thu, 2 Mar 2017 11:48:22 -0500 From: Arnd Bergmann To: kasan-dev@googlegroups.com Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-wireless@vger.kernel.org, kernel-build-reports@lists.linaro.org, "David S . Miller" , Arnd Bergmann Subject: [PATCH 13/26] rtl8180: reduce stack size for KASAN Date: Thu, 2 Mar 2017 17:38:21 +0100 Message-Id: <20170302163834.2273519-14-arnd@arndb.de> (sfid-20170302_175004_007376_E94D44B2) In-Reply-To: <20170302163834.2273519-1-arnd@arndb.de> References: <20170302163834.2273519-1-arnd@arndb.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: When CONFIG_KASAN is set, we see overly large stack frames from inlining functions with local variables: drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c: In function 'rtl8225se_rf_init': drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c:431:1: warning: the frame size of 4384 bytes is larger than 3072 bytes [-Wframe-larger-than=] This marks them noinline_for_kasan. Signed-off-by: Arnd Bergmann --- drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c b/drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c index fde89866fa8d..1efa098a2e32 100644 --- a/drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c +++ b/drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8225se.c @@ -174,14 +174,14 @@ static void rtl8187se_three_wire_io(struct ieee80211_hw *dev, u8 *data, } while (0); } -static u32 rtl8187se_rf_readreg(struct ieee80211_hw *dev, u8 addr) +static noinline_for_kasan u32 rtl8187se_rf_readreg(struct ieee80211_hw *dev, u8 addr) { u32 dataread = addr & 0x0F; rtl8187se_three_wire_io(dev, (u8 *)&dataread, 16, 0); return dataread; } -static void rtl8187se_rf_writereg(struct ieee80211_hw *dev, u8 addr, u32 data) +static noinline_for_kasan void rtl8187se_rf_writereg(struct ieee80211_hw *dev, u8 addr, u32 data) { u32 outdata = (data << 4) | (u32)(addr & 0x0F); rtl8187se_three_wire_io(dev, (u8 *)&outdata, 16, 1); -- 2.9.0