Messages in this thread | | | Date | Mon, 9 Oct 2023 04:08:04 +0800 | From | kernel test robot <> | Subject | net/smc/smc_llc.c:40:1: warning: alignment 1 of 'struct smc_llc_hdr' is less than 4 |
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Hi Karsten,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b9ddbb0cde2adcedda26045cc58f31316a492215 commit: b4ba4652b3f8b7c9bbb5786f8acf4724bdab2196 net/smc: extend LLC layer for SMC-Rv2 date: 2 years ago config: arm-randconfig-002-20231002 (https://download.01.org/0day-ci/archive/20231009/202310090453.06oMLpnk-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231009/202310090453.06oMLpnk-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202310090453.06oMLpnk-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/gfp.h:6, from include/linux/xarray.h:14, from include/linux/radix-tree.h:19, from include/linux/fs.h:15, from include/linux/highmem.h:5, from include/linux/bvec.h:10, from include/linux/skbuff.h:17, from include/linux/tcp.h:17, from include/net/tcp.h:20, from net/smc/smc_llc.c:13: include/linux/mmzone.h: In function '__nr_to_section': include/linux/mmzone.h:1349:13: warning: the comparison will always evaluate as 'true' for the address of 'mem_section' will never be NULL [-Waddress] 1349 | if (!mem_section[SECTION_NR_TO_ROOT(nr)]) | ^ include/linux/mmzone.h:1335:27: note: 'mem_section' declared here 1335 | extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT]; | ^~~~~~~~~~~ net/smc/smc_llc.c: At top level: >> net/smc/smc_llc.c:40:1: warning: alignment 1 of 'struct smc_llc_hdr' is less than 4 [-Wpacked-not-aligned] 40 | } __packed; /* format defined in | ^ In file included from <command-line>: In function 'smc_llc_add_pending_send', inlined from 'smc_llc_send_message' at net/smc/smc_llc.c:760:7: include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_569' declared with attribute error: must increase SMC_WR_BUF_SIZE to at least sizeof(struct smc_llc_msg) 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert' 303 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert' 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:409:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 409 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_570' declared with attribute error: must adapt SMC_WR_TX_SIZE to sizeof(struct smc_llc_msg); if not all smc_wr upper layer protocols use the same message size any more, must start to set link->wr_tx_sges[i].length on each individual smc_wr_tx_send() 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert' 303 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert' 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:412:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 412 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ In function 'smc_llc_add_pending_send', inlined from 'smc_llc_send_confirm_rkey' at net/smc/smc_llc.c:492:7: include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_569' declared with attribute error: must increase SMC_WR_BUF_SIZE to at least sizeof(struct smc_llc_msg) 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert' 303 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert' 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:409:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 409 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_570' declared with attribute error: must adapt SMC_WR_TX_SIZE to sizeof(struct smc_llc_msg); if not all smc_wr upper layer protocols use the same message size any more, must start to set link->wr_tx_sges[i].length on each individual smc_wr_tx_send() 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert' 303 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert' 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:412:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 412 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ In function 'smc_llc_add_pending_send', inlined from 'smc_llc_add_link_cont' at net/smc/smc_llc.c:833:7: include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_569' declared with attribute error: must increase SMC_WR_BUF_SIZE to at least sizeof(struct smc_llc_msg) 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert' 303 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert' 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:409:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 409 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ include/linux/compiler_types.h:322:45: error: call to '__compiletime_assert_570' declared with attribute error: must adapt SMC_WR_TX_SIZE to sizeof(struct smc_llc_msg); if not all smc_wr upper layer protocols use the same message size any more, must start to set link->wr_tx_sges[i].length on each individual smc_wr_tx_send() 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:303:25: note: in definition of macro '__compiletime_assert' 303 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert' 322 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ net/smc/smc_llc.c:412:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 412 | BUILD_BUG_ON_MSG( | ^~~~~~~~~~~~~~~~ In function 'smc_llc_add_pending_send',
vim +40 net/smc/smc_llc.c
23 24 struct smc_llc_hdr { 25 struct smc_wr_rx_hdr common; 26 union { 27 struct { 28 u8 length; /* 44 */ 29 #if defined(__BIG_ENDIAN_BITFIELD) 30 u8 reserved:4, 31 add_link_rej_rsn:4; 32 #elif defined(__LITTLE_ENDIAN_BITFIELD) 33 u8 add_link_rej_rsn:4, 34 reserved:4; 35 #endif 36 }; 37 u16 length_v2; /* 44 - 8192*/ 38 }; 39 u8 flags; > 40 } __packed; /* format defined in 41 * IBM Shared Memory Communications Version 2 42 * (https://www.ibm.com/support/pages/node/6326337) 43 */ 44
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