From: Arnd Bergmann <arnd@arndb.de>
To: kasan-dev@googlegroups.com
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
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" <davem@davemloft.net>,
Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH 05/26] netlink: mark nla_put_{u8,u16,u32} noinline_for_kasan
Date: Thu, 2 Mar 2017 17:38:13 +0100 [thread overview]
Message-ID: <20170302163834.2273519-6-arnd@arndb.de> (raw)
In-Reply-To: <20170302163834.2273519-1-arnd@arndb.de>
When CONFIG_KASAN is enabled, the "--param asan-stack=1" causes rather large
stack frames in some functions. This goes unnoticed normally because
CONFIG_FRAME_WARN is disabled with CONFIG_KASAN by default as of commit
3f181b4d8652 ("lib/Kconfig.debug: disable -Wframe-larger-than warnings with
KASAN=y").
The kernelci.org build bot however has the warning enabled and that led
me to investigate it a little further, as every build produces these warnings:
net/wireless/nl80211.c:4389:1: warning: the frame size of 2240 bytes is larger than 2048 bytes [-Wframe-larger-than=]
net/wireless/nl80211.c:1895:1: warning: the frame size of 3776 bytes is larger than 2048 bytes [-Wframe-larger-than=]
net/wireless/nl80211.c:1410:1: warning: the frame size of 2208 bytes is larger than 2048 bytes [-Wframe-larger-than=]
net/bridge/br_netlink.c:1282:1: warning: the frame size of 2544 bytes is larger than 2048 bytes [-Wframe-larger-than=]
With the new noinline_for_kasan annotation, we can avoid the problem
when KASAN is enabled but not change anything otherwise.
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: kasan-dev@googlegroups.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
include/net/netlink.h | 36 ++++++++++++++++++------------------
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/include/net/netlink.h b/include/net/netlink.h
index b239fcd33d80..d84878d8347f 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -755,7 +755,7 @@ static inline int nla_parse_nested(struct nlattr *tb[], int maxtype,
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_u8(struct sk_buff *skb, int attrtype, u8 value)
+static noinline_for_kasan int nla_put_u8(struct sk_buff *skb, int attrtype, u8 value)
{
return nla_put(skb, attrtype, sizeof(u8), &value);
}
@@ -766,7 +766,7 @@ static inline int nla_put_u8(struct sk_buff *skb, int attrtype, u8 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value)
+static noinline_for_kasan int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value)
{
return nla_put(skb, attrtype, sizeof(u16), &value);
}
@@ -777,7 +777,7 @@ static inline int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value)
+static noinline_for_kasan int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value)
{
return nla_put(skb, attrtype, sizeof(__be16), &value);
}
@@ -788,7 +788,7 @@ static inline int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_net16(struct sk_buff *skb, int attrtype, __be16 value)
+static noinline_for_kasan int nla_put_net16(struct sk_buff *skb, int attrtype, __be16 value)
{
return nla_put_be16(skb, attrtype | NLA_F_NET_BYTEORDER, value);
}
@@ -799,7 +799,7 @@ static inline int nla_put_net16(struct sk_buff *skb, int attrtype, __be16 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_le16(struct sk_buff *skb, int attrtype, __le16 value)
+static noinline_for_kasan int nla_put_le16(struct sk_buff *skb, int attrtype, __le16 value)
{
return nla_put(skb, attrtype, sizeof(__le16), &value);
}
@@ -810,7 +810,7 @@ static inline int nla_put_le16(struct sk_buff *skb, int attrtype, __le16 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value)
+static noinline_for_kasan int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value)
{
return nla_put(skb, attrtype, sizeof(u32), &value);
}
@@ -821,7 +821,7 @@ static inline int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value)
+static noinline_for_kasan int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value)
{
return nla_put(skb, attrtype, sizeof(__be32), &value);
}
@@ -832,7 +832,7 @@ static inline int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_net32(struct sk_buff *skb, int attrtype, __be32 value)
+static noinline_for_kasan int nla_put_net32(struct sk_buff *skb, int attrtype, __be32 value)
{
return nla_put_be32(skb, attrtype | NLA_F_NET_BYTEORDER, value);
}
@@ -843,7 +843,7 @@ static inline int nla_put_net32(struct sk_buff *skb, int attrtype, __be32 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_le32(struct sk_buff *skb, int attrtype, __le32 value)
+static noinline_for_kasan int nla_put_le32(struct sk_buff *skb, int attrtype, __le32 value)
{
return nla_put(skb, attrtype, sizeof(__le32), &value);
}
@@ -855,7 +855,7 @@ static inline int nla_put_le32(struct sk_buff *skb, int attrtype, __le32 value)
* @value: numeric value
* @padattr: attribute type for the padding
*/
-static inline int nla_put_u64_64bit(struct sk_buff *skb, int attrtype,
+static noinline_for_kasan int nla_put_u64_64bit(struct sk_buff *skb, int attrtype,
u64 value, int padattr)
{
return nla_put_64bit(skb, attrtype, sizeof(u64), &value, padattr);
@@ -868,7 +868,7 @@ static inline int nla_put_u64_64bit(struct sk_buff *skb, int attrtype,
* @value: numeric value
* @padattr: attribute type for the padding
*/
-static inline int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value,
+static noinline_for_kasan int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value,
int padattr)
{
return nla_put_64bit(skb, attrtype, sizeof(__be64), &value, padattr);
@@ -881,7 +881,7 @@ static inline int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value,
* @value: numeric value
* @padattr: attribute type for the padding
*/
-static inline int nla_put_net64(struct sk_buff *skb, int attrtype, __be64 value,
+static noinline_for_kasan int nla_put_net64(struct sk_buff *skb, int attrtype, __be64 value,
int padattr)
{
return nla_put_be64(skb, attrtype | NLA_F_NET_BYTEORDER, value,
@@ -895,7 +895,7 @@ static inline int nla_put_net64(struct sk_buff *skb, int attrtype, __be64 value,
* @value: numeric value
* @padattr: attribute type for the padding
*/
-static inline int nla_put_le64(struct sk_buff *skb, int attrtype, __le64 value,
+static noinline_for_kasan int nla_put_le64(struct sk_buff *skb, int attrtype, __le64 value,
int padattr)
{
return nla_put_64bit(skb, attrtype, sizeof(__le64), &value, padattr);
@@ -907,7 +907,7 @@ static inline int nla_put_le64(struct sk_buff *skb, int attrtype, __le64 value,
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value)
+static noinline_for_kasan int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value)
{
return nla_put(skb, attrtype, sizeof(s8), &value);
}
@@ -918,7 +918,7 @@ static inline int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value)
+static noinline_for_kasan int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value)
{
return nla_put(skb, attrtype, sizeof(s16), &value);
}
@@ -929,7 +929,7 @@ static inline int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value)
* @attrtype: attribute type
* @value: numeric value
*/
-static inline int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value)
+static noinline_for_kasan int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value)
{
return nla_put(skb, attrtype, sizeof(s32), &value);
}
@@ -941,7 +941,7 @@ static inline int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value)
* @value: numeric value
* @padattr: attribute type for the padding
*/
-static inline int nla_put_s64(struct sk_buff *skb, int attrtype, s64 value,
+static noinline_for_kasan int nla_put_s64(struct sk_buff *skb, int attrtype, s64 value,
int padattr)
{
return nla_put_64bit(skb, attrtype, sizeof(s64), &value, padattr);
@@ -976,7 +976,7 @@ static inline int nla_put_flag(struct sk_buff *skb, int attrtype)
* @njiffies: number of jiffies to convert to msecs
* @padattr: attribute type for the padding
*/
-static inline int nla_put_msecs(struct sk_buff *skb, int attrtype,
+static noinline_for_kasan int nla_put_msecs(struct sk_buff *skb, int attrtype,
unsigned long njiffies, int padattr)
{
u64 tmp = jiffies_to_msecs(njiffies);
--
2.9.0
next prev parent reply other threads:[~2017-03-02 17:11 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-02 16:38 [PATCH 00/26] bring back stack frame warning with KASAN Arnd Bergmann
2017-03-02 16:38 ` [PATCH 01/26] compiler: introduce noinline_for_kasan annotation Arnd Bergmann
2017-03-03 13:50 ` Andrey Ryabinin
2017-03-03 13:55 ` Alexander Potapenko
2017-03-03 14:30 ` Arnd Bergmann
2017-03-03 14:33 ` Alexander Potapenko
2017-03-03 14:51 ` Arnd Bergmann
2017-03-03 16:34 ` David Laight
2017-03-02 16:38 ` [PATCH 02/26] rewrite READ_ONCE/WRITE_ONCE Arnd Bergmann
2017-03-02 16:51 ` Christian Borntraeger
2017-03-02 17:55 ` Arnd Bergmann
2017-03-02 19:00 ` Christian Borntraeger
2017-03-02 21:45 ` Arnd Bergmann
2017-03-03 8:26 ` Christian Borntraeger
2017-03-03 9:54 ` Arnd Bergmann
2017-03-03 14:49 ` Peter Zijlstra
2017-03-03 14:57 ` Peter Zijlstra
2017-03-02 16:38 ` [PATCH 03/26] typecheck.h: avoid local variables in typecheck() macro Arnd Bergmann
2017-03-02 16:38 ` [PATCH 04/26] tty: kbd: reduce stack size with KASAN Arnd Bergmann
2017-03-02 16:38 ` Arnd Bergmann [this message]
2017-03-02 16:38 ` [PATCH 06/26] rocker: mark rocker_tlv_put_* functions as noinline_for_kasan Arnd Bergmann
2017-03-02 16:38 ` [PATCH 07/26] brcmsmac: reduce stack size with KASAN Arnd Bergmann
2017-03-06 9:16 ` Arend Van Spriel
2017-03-06 10:38 ` Arnd Bergmann
2017-03-06 11:02 ` Arend Van Spriel
2017-03-06 11:16 ` Arnd Bergmann
2017-03-06 11:18 ` Arnd Bergmann
2017-03-02 16:38 ` [PATCH 08/26] brcmsmac: make some local variables 'static const' to reduce stack size Arnd Bergmann
2017-03-06 9:30 ` Arend Van Spriel
2017-03-06 16:19 ` Kalle Valo
2017-03-06 21:34 ` Arnd Bergmann
2017-03-07 9:44 ` Kalle Valo
2017-03-07 9:55 ` Arend Van Spriel
2017-03-02 16:38 ` [PATCH 09/26] brcmsmac: split up wlc_phy_workarounds_nphy Arnd Bergmann
2017-03-06 9:31 ` Arend Van Spriel
2017-03-02 16:38 ` [PATCH 10/26] brcmsmac: reindent split functions Arnd Bergmann
2017-03-06 9:33 ` Arend Van Spriel
2017-03-06 16:24 ` Kalle Valo
2017-03-02 16:38 ` [PATCH 11/26] rtlwifi: reduce stack usage for KASAN Arnd Bergmann
2017-03-02 16:38 ` [PATCH 12/26] wl3501_cs: reduce stack size " Arnd Bergmann
2017-03-02 16:38 ` [PATCH 13/26] rtl8180: " Arnd Bergmann
2017-03-02 16:38 ` [PATCH 14/26] [media] dvb-frontends: reduce stack size in i2c access Arnd Bergmann
2017-03-02 16:38 ` [PATCH 15/26] [media] tuners: i2c: reduce stack usage for tuner_i2c_xfer_* Arnd Bergmann
2017-03-02 16:38 ` [PATCH 16/26] [media] i2c: adv7604: mark register access as noinline_for_kasan Arnd Bergmann
2017-03-02 16:38 ` [PATCH 17/26] [media] i2c: ks0127: reduce stack frame size for KASAN Arnd Bergmann
2017-03-02 16:38 ` [PATCH 18/26] [media] i2c: cx25840: avoid stack overflow with KASAN Arnd Bergmann
2017-03-02 16:38 ` [PATCH 19/26] [media] r820t: mark register functions as noinline_for_kasan Arnd Bergmann
2017-03-02 16:38 ` [PATCH 20/26] [media] em28xx: split up em28xx_dvb_init to reduce stack size Arnd Bergmann
2017-03-02 16:38 ` [PATCH 21/26] drm/bridge: ps8622: reduce stack size for KASAN Arnd Bergmann
2017-03-02 16:38 ` [PATCH 22/26] drm/i915/gvt: don't overflow the kernel stack with KASAN Arnd Bergmann
2017-03-02 16:38 ` [PATCH 23/26] mtd: cfi: reduce stack size " Arnd Bergmann
2017-03-02 16:38 ` [PATCH 24/26] ocfs2: " Arnd Bergmann
2017-03-02 17:46 ` Joe Perches
2017-03-02 22:22 ` Arnd Bergmann
2017-03-02 22:40 ` Joe Perches
2017-03-02 22:59 ` Arnd Bergmann
2017-03-02 23:58 ` Joe Perches
2017-03-02 16:38 ` [PATCH 25/26] isdn: eicon: mark divascapi incompatible with kasan Arnd Bergmann
2017-03-03 14:20 ` Andrey Ryabinin
2017-03-03 14:54 ` Arnd Bergmann
2017-03-03 15:22 ` Andrey Ryabinin
2017-03-03 15:37 ` Arnd Bergmann
2017-03-02 16:38 ` [PATCH 26/26] kasan: rework Kconfig settings Arnd Bergmann
2017-03-03 14:51 ` Andrey Ryabinin
2017-03-03 15:03 ` Arnd Bergmann
2017-03-03 12:25 ` [PATCH 00/26] bring back stack frame warning with KASAN Alexander Potapenko
2017-03-03 12:54 ` Arnd Bergmann
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