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Message-ID: <202301292309.r5KzfyUp-lkp@intel.com>
Date: Sun, 29 Jan 2023 23:44:34 +0800
From: kernel test robot <lkp@...el.com>
To: Leon Romanovsky <leon@...nel.org>,
"David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Leon Romanovsky <leonro@...dia.com>,
Andrew Lunn <andrew@...n.ch>,
bridge@...ts.linux-foundation.org,
Eric Dumazet <edumazet@...gle.com>,
Florian Fainelli <f.fainelli@...il.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
netdev@...r.kernel.org, Nikolay Aleksandrov <razor@...ckwall.org>,
Paolo Abeni <pabeni@...hat.com>,
Roopa Prabhu <roopa@...dia.com>,
Steffen Klassert <steffen.klassert@...unet.com>,
Vladimir Oltean <olteanv@...il.com>
Subject: Re: [PATCH net-next v1] netlink: provide an ability to set default
extack message
Hi Leon,
I love your patch! Yet something to improve:
[auto build test ERROR on net-next/master]
url: https://github.com/intel-lab-lkp/linux/commits/Leon-Romanovsky/netlink-provide-an-ability-to-set-default-extack-message/20230129-203242
patch link: https://lore.kernel.org/r/d4843760219f20367c27472f084bd8aa729cf321.1674995155.git.leon%40kernel.org
patch subject: [PATCH net-next v1] netlink: provide an ability to set default extack message
config: s390-randconfig-r021-20230129 (https://download.01.org/0day-ci/archive/20230129/202301292309.r5KzfyUp-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/f0b11fb09eb6708058858b0cf95d1fec34eba956
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Leon-Romanovsky/netlink-provide-an-ability-to-set-default-extack-message/20230129-203242
git checkout f0b11fb09eb6708058858b0cf95d1fec34eba956
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash net/bridge/ net/dsa/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from net/bridge/br_switchdev.c:4:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from net/bridge/br_switchdev.c:4:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from net/bridge/br_switchdev.c:4:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> net/bridge/br_switchdev.c:107:3: error: called object type 'char[9]' is not a function or function pointer
NL_SET_ERR_MSG_WEAK_MOD(extack,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/netlink.h:140:32: note: expanded from macro 'NL_SET_ERR_MSG_WEAK_MOD'
NL_SET_ERR_MSG_MOD((extack), (msg)); \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/netlink.h:128:47: note: expanded from macro 'NL_SET_ERR_MSG_MOD'
NL_SET_ERR_MSG((extack), KBUILD_MODNAME ": " msg)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/netlink.h:99:30: note: expanded from macro 'NL_SET_ERR_MSG'
static const char __msg[] = msg; \
^~~
net/bridge/br_switchdev.c:117:3: error: called object type 'char[9]' is not a function or function pointer
NL_SET_ERR_MSG_WEAK_MOD(extack,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/netlink.h:140:32: note: expanded from macro 'NL_SET_ERR_MSG_WEAK_MOD'
NL_SET_ERR_MSG_MOD((extack), (msg)); \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/netlink.h:128:47: note: expanded from macro 'NL_SET_ERR_MSG_MOD'
NL_SET_ERR_MSG((extack), KBUILD_MODNAME ": " msg)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/netlink.h:99:30: note: expanded from macro 'NL_SET_ERR_MSG'
static const char __msg[] = msg; \
^~~
12 warnings and 2 errors generated.
--
In file included from net/dsa/master.c:9:
In file included from include/linux/ethtool.h:18:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from net/dsa/master.c:9:
In file included from include/linux/ethtool.h:18:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from net/dsa/master.c:9:
In file included from include/linux/ethtool.h:18:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> net/dsa/master.c:467:3: error: called object type 'char[11]' is not a function or function pointer
NL_SET_ERR_MSG_WEAK_MOD(extack, "CPU port failed to join LAG");
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/netlink.h:140:32: note: expanded from macro 'NL_SET_ERR_MSG_WEAK_MOD'
NL_SET_ERR_MSG_MOD((extack), (msg)); \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/netlink.h:128:47: note: expanded from macro 'NL_SET_ERR_MSG_MOD'
NL_SET_ERR_MSG((extack), KBUILD_MODNAME ": " msg)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/netlink.h:99:30: note: expanded from macro 'NL_SET_ERR_MSG'
static const char __msg[] = msg; \
^~~
12 warnings and 1 error generated.
--
In file included from net/dsa/slave.c:8:
In file included from include/linux/etherdevice.h:20:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from net/dsa/slave.c:8:
In file included from include/linux/etherdevice.h:20:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from net/dsa/slave.c:8:
In file included from include/linux/etherdevice.h:20:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> net/dsa/slave.c:2695:5: error: called object type 'char[11]' is not a function or function pointer
NL_SET_ERR_MSG_WEAK_MOD(extack, "Offloading not supported");
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/netlink.h:140:32: note: expanded from macro 'NL_SET_ERR_MSG_WEAK_MOD'
NL_SET_ERR_MSG_MOD((extack), (msg)); \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/netlink.h:128:47: note: expanded from macro 'NL_SET_ERR_MSG_MOD'
NL_SET_ERR_MSG((extack), KBUILD_MODNAME ": " msg)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/netlink.h:99:30: note: expanded from macro 'NL_SET_ERR_MSG'
static const char __msg[] = msg; \
^~~
12 warnings and 1 error generated.
vim +107 net/bridge/br_switchdev.c
72
73 /* Flags that can be offloaded to hardware */
74 #define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | BR_PORT_MAB | \
75 BR_MCAST_FLOOD | BR_BCAST_FLOOD | BR_PORT_LOCKED | \
76 BR_HAIRPIN_MODE | BR_ISOLATED | BR_MULTICAST_TO_UNICAST)
77
78 int br_switchdev_set_port_flag(struct net_bridge_port *p,
79 unsigned long flags,
80 unsigned long mask,
81 struct netlink_ext_ack *extack)
82 {
83 struct switchdev_attr attr = {
84 .orig_dev = p->dev,
85 };
86 struct switchdev_notifier_port_attr_info info = {
87 .attr = &attr,
88 };
89 int err;
90
91 mask &= BR_PORT_FLAGS_HW_OFFLOAD;
92 if (!mask)
93 return 0;
94
95 attr.id = SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS;
96 attr.u.brport_flags.val = flags;
97 attr.u.brport_flags.mask = mask;
98
99 /* We run from atomic context here */
100 err = call_switchdev_notifiers(SWITCHDEV_PORT_ATTR_SET, p->dev,
101 &info.info, extack);
102 err = notifier_to_errno(err);
103 if (err == -EOPNOTSUPP)
104 return 0;
105
106 if (err) {
> 107 NL_SET_ERR_MSG_WEAK_MOD(extack,
108 "bridge flag offload is not supported");
109 return -EOPNOTSUPP;
110 }
111
112 attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS;
113 attr.flags = SWITCHDEV_F_DEFER;
114
115 err = switchdev_port_attr_set(p->dev, &attr, extack);
116 if (err) {
117 NL_SET_ERR_MSG_WEAK_MOD(extack,
118 "error setting offload flag on port");
119 return err;
120 }
121
122 return 0;
123 }
124
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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