Hi "Björn, I love your patch! Yet something to improve: [auto build test ERROR on 95204c9bfa48d2f4d3bab7df55c1cc823957ff81] url: https://github.com/0day-ci/linux/commits/Bj-rn-T-pel/Introduce-bpf_redire... base: 95204c9bfa48d2f4d3bab7df55c1cc823957ff81 config: x86_64-randconfig-m031-20210120 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/419b1341d7980ee57fb10f4306719eef3... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Bj-rn-T-pel/Introduce-bpf_redirect_xsk-helper/20210120-150357 git checkout 419b1341d7980ee57fb10f4306719eef3c1a15f8 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from <command-line>: net/core/filter.c: In function '____bpf_xdp_redirect_xsk': 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE' 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^~~~~~~~~ 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE' 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^~~~~~~~~ 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE' 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^~~~~~~~~ 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE' 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^~~~~~~~~ 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE' 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^~~~~~~~~ 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^ include/linux/compiler_types.h:271:13: note: in definition of macro '__unqual_scalar_typeof' 271 | _Generic((x), \ | ^ include/asm-generic/rwonce.h:50:2: note: in expansion of macro '__READ_ONCE' 50 | __READ_ONCE(x); \ | ^~~~~~~~~~~ net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE' 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^~~~~~~~~ In file included from ./arch/x86/include/generated/asm/rwonce.h:1, from include/linux/compiler.h:246, from include/linux/export.h:43, from include/linux/linkage.h:7, from include/linux/kernel.h:7, from include/linux/list.h:9, from include/linux/module.h:12, from net/core/filter.c:20: 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^ include/asm-generic/rwonce.h:44:72: note: in definition of macro '__READ_ONCE' 44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x)) | ^ net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE' 4165 | xs = READ_ONCE(dev->_rx[queue_id].xsk); | ^~~~~~~~~ vim +4165 net/core/filter.c 4157 4158 BPF_CALL_2(bpf_xdp_redirect_xsk, struct xdp_buff *, xdp, u64, action) 4159 { 4160 struct net_device *dev = xdp->rxq->dev; 4161 u32 queue_id = xdp->rxq->queue_index; 4162 struct bpf_redirect_info *ri; 4163 struct xdp_sock *xs; 4164 4166 if (!xs) 4167 return action; 4168 4169 ri = this_cpu_ptr(&bpf_redirect_info); 4170 ri->tgt_type = XDP_REDIR_XSK; 4171 ri->tgt_value = xs; 4172 4173 return XDP_REDIRECT; 4174 } 4175 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org