Subject: Re: [PATCH net-next 5/7] sctp: add dif and sdif check in asoc and ep lookup

From: kernel test robot <[email-masked]>
Date: Mon, 14 Nov 2022 04:14:48 +0800

Hi Xin,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Xin-Long/sctp-support-vrf-processing/20221114-004540
patch link:    https://lore.kernel.org/r/86dfdc49613ca8a8a6a3d7c7cf2e7bd8207338f2.1668357542.git.lucien.xin%40gmail.com
patch subject: [PATCH net-next 5/7] sctp: add dif and sdif check in asoc and ep lookup
config: arm-randconfig-r034-20221114
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 463da45892e2d2a262277b91b96f5f8c05dc25d0)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/6129dc2e382c6e2d3198f6c32cc1f750a15a77ab
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Xin-Long/sctp-support-vrf-processing/20221114-004540
        git checkout 6129dc2e382c6e2d3198f6c32cc1f750a15a77ab
        # 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=arm SHELL=/bin/bash net/openvswitch/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email-masked]>

All errors (new ones prefixed by >>):

   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
           compiletime_assert_rwonce_type(x);                              \
                                          ^
   include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
           compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long),  \
                                            ^
   include/linux/compiler_types.h:324:10: note: expanded from macro '__native_word'
           (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \
                   ^
   include/linux/compiler_types.h:357:22: note: expanded from macro 'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                               ^~~~~~~~~
   include/linux/compiler_types.h:345:23: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
                                ^~~~~~~~~
   include/linux/compiler_types.h:337:9: note: expanded from macro '__compiletime_assert'
                   if (!(condition))                                       \
                         ^~~~~~~~~
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
           compiletime_assert_rwonce_type(x);                              \
                                          ^
   include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
           compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long),  \
                                            ^
   include/linux/compiler_types.h:324:39: note: expanded from macro '__native_word'
           (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \
                                                ^
   include/linux/compiler_types.h:357:22: note: expanded from macro 'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                               ^~~~~~~~~
   include/linux/compiler_types.h:345:23: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
                                ^~~~~~~~~
   include/linux/compiler_types.h:337:9: note: expanded from macro '__compiletime_assert'
                   if (!(condition))                                       \
                         ^~~~~~~~~
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
           compiletime_assert_rwonce_type(x);                              \
                                          ^
   include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
           compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long),  \
                                            ^
   include/linux/compiler_types.h:325:10: note: expanded from macro '__native_word'
            sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
                   ^
   include/linux/compiler_types.h:357:22: note: expanded from macro 'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                               ^~~~~~~~~
   include/linux/compiler_types.h:345:23: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
                                ^~~~~~~~~
   include/linux/compiler_types.h:337:9: note: expanded from macro '__compiletime_assert'
                   if (!(condition))                                       \
                         ^~~~~~~~~
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
           compiletime_assert_rwonce_type(x);                              \
                                          ^
   include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
           compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long),  \
                                            ^
   include/linux/compiler_types.h:325:38: note: expanded from macro '__native_word'
            sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
                                               ^
   include/linux/compiler_types.h:357:22: note: expanded from macro 'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                               ^~~~~~~~~
   include/linux/compiler_types.h:345:23: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
                                ^~~~~~~~~
   include/linux/compiler_types.h:337:9: note: expanded from macro '__compiletime_assert'
                   if (!(condition))                                       \
                         ^~~~~~~~~
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
           compiletime_assert_rwonce_type(x);                              \
                                          ^
   include/asm-generic/rwonce.h:36:48: note: expanded from macro 'compiletime_assert_rwonce_type'
           compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long),  \
                                                         ^
   include/linux/compiler_types.h:357:22: note: expanded from macro 'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                               ^~~~~~~~~
   include/linux/compiler_types.h:345:23: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
                                ^~~~~~~~~
   include/linux/compiler_types.h:337:9: note: expanded from macro '__compiletime_assert'
                   if (!(condition))                                       \
                         ^~~~~~~~~
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
           __READ_ONCE(x);                                                 \
                       ^
   include/asm-generic/rwonce.h:44:65: note: expanded from macro '__READ_ONCE'
   #define __READ_ONCE(x)  (*(const volatile __unqual_scalar_typeof(x) *)&(x))
                                                                    ^
   include/linux/compiler_types.h:313:13: note: expanded from macro '__unqual_scalar_typeof'
                   _Generic((x),                                           \
                             ^
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
           __READ_ONCE(x);                                                 \
                       ^
   include/asm-generic/rwonce.h:44:65: note: expanded from macro '__READ_ONCE'
   #define __READ_ONCE(x)  (*(const volatile __unqual_scalar_typeof(x) *)&(x))
                                                                    ^
   include/linux/compiler_types.h:320:15: note: expanded from macro '__unqual_scalar_typeof'
                            default: (x)))
                                      ^
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:35: error: no member named 'sctp' in 'struct net'
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                                       ~~~  ^
   include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
           __READ_ONCE(x);                                                 \
                       ^
   include/asm-generic/rwonce.h:44:72: note: expanded from macro '__READ_ONCE'
   #define __READ_ONCE(x)  (*(const volatile __unqual_scalar_typeof(x) *)&(x))
                                                                           ^
   In file included from net/openvswitch/actions.c:26:
   In file included from include/net/sctp/checksum.h:27:
>> include/net/sctp/sctp.h:686:19: error: invalid argument type 'void' to unary expression
           l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   9 errors generated.

vim +686 include/net/sctp/sctp.h

   679	
   680	static inline bool sctp_sk_bound_dev_eq(struct net *net, int bound_dev_if,
   681						int dif, int sdif)
   682	{
   683		bool l3mdev_accept = true;
   684	
   685	#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
 > 686		l3mdev_accept = !!READ_ONCE(net->sctp.l3mdev_accept);
   687	#endif
   688		return inet_bound_dev_eq(l3mdev_accept, bound_dev_if, dif, sdif);
   689	}
   690	

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