Hi Daniel, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 61556703b610a104de324e4f061dc6cf7b218b46 commit: c2f78f0cb294aa6f009d3a170f4ee8ad199ba5da media: vidtv: psi: add a Network Information Table (NIT) date: 2 months ago config: mips-randconfig-r032-20210207 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c2f78f0cb294aa6f009d3a170f4ee8ad199ba5da git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c2f78f0cb294aa6f009d3a170f4ee8ad199ba5da # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/media/test-drivers/vidtv/vidtv_psi.c:753:31: warning: taking address of packed member 'bitfield2' of class or structure 'vidtv_psi_table_pmt' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&pmt->bitfield2, desc_loop_len, 10); ^~~~~~~~~~~~~~ drivers/media/test-drivers/vidtv/vidtv_psi.c:764:32: warning: taking address of packed member 'bitfield2' of class or structure 'vidtv_psi_table_pmt_stream' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&s->bitfield2, desc_loop_len, 10); ^~~~~~~~~~~~ drivers/media/test-drivers/vidtv/vidtv_psi.c:796:32: warning: taking address of packed member 'bitfield' of class or structure 'vidtv_psi_table_sdt_service' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&s->bitfield, desc_loop_len, 12); ^~~~~~~~~~~ >> drivers/media/test-drivers/vidtv/vidtv_psi.c:1457:31: warning: taking address of packed member 'bitfield' of class or structure 'vidtv_psi_table_nit' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&nit->bitfield, desc_loop_len, 12); ^~~~~~~~~~~~~ >> drivers/media/test-drivers/vidtv/vidtv_psi.c:1472:32: warning: taking address of packed member 'bitfield' of class or structure 'vidtv_psi_table_transport' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&t->bitfield, desc_loop_len, 12); ^~~~~~~~~~~ >> drivers/media/test-drivers/vidtv/vidtv_psi.c:1480:31: warning: taking address of packed member 'bitfield2' of class or structure 'vidtv_psi_table_nit' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_set_desc_loop_len(&nit->bitfield2, transport_loop_len, 12); ^~~~~~~~~~~~~~ drivers/media/test-drivers/vidtv/vidtv_psi.c:92:19: warning: unused function 'vidtv_psi_sdt_serv_get_desc_loop_len' [-Wunused-function] static inline u16 vidtv_psi_sdt_serv_get_desc_loop_len(struct vidtv_psi_table_sdt_service *s) ^ drivers/media/test-drivers/vidtv/vidtv_psi.c:103:19: warning: unused function 'vidtv_psi_pmt_stream_get_desc_loop_len' [-Wunused-function] static inline u16 vidtv_psi_pmt_stream_get_desc_loop_len(struct vidtv_psi_table_pmt_stream *s) ^ drivers/media/test-drivers/vidtv/vidtv_psi.c:114:19: warning: unused function 'vidtv_psi_pmt_get_desc_loop_len' [-Wunused-function] static inline u16 vidtv_psi_pmt_get_desc_loop_len(struct vidtv_psi_table_pmt *p) ^ 9 warnings generated. vim +1457 drivers/media/test-drivers/vidtv/vidtv_psi.c 1442 1443 static void vidtv_psi_nit_table_update_sec_len(struct vidtv_psi_table_nit *nit) 1444 { 1445 u16 length = 0; 1446 struct vidtv_psi_table_transport *t = nit->transport; 1447 u16 desc_loop_len; 1448 u16 transport_loop_len = 0; 1449 1450 /* 1451 * from immediately after 'section_length' until 1452 * 'network_descriptor_length' 1453 */ 1454 length += NIT_LEN_UNTIL_NETWORK_DESCRIPTOR_LEN; 1455 1456 desc_loop_len = vidtv_psi_desc_comp_loop_len(nit->descriptor); > 1457 vidtv_psi_set_desc_loop_len(&nit->bitfield, desc_loop_len, 12); 1458 1459 length += desc_loop_len; 1460 1461 length += sizeof_field(struct vidtv_psi_table_nit, bitfield2); 1462 1463 while (t) { 1464 /* skip both pointers at the end */ 1465 transport_loop_len += sizeof(struct vidtv_psi_table_transport) - 1466 sizeof(struct vidtv_psi_desc *) - 1467 sizeof(struct vidtv_psi_table_transport *); 1468 1469 length += transport_loop_len; 1470 1471 desc_loop_len = vidtv_psi_desc_comp_loop_len(t->descriptor); > 1472 vidtv_psi_set_desc_loop_len(&t->bitfield, desc_loop_len, 12); 1473 1474 length += desc_loop_len; 1475 1476 t = t->next; 1477 } 1478 1479 // Actually sets the transport stream loop len, maybe rename this function later > 1480 vidtv_psi_set_desc_loop_len(&nit->bitfield2, transport_loop_len, 12); 1481 length += CRC_SIZE_IN_BYTES; 1482 1483 vidtv_psi_set_sec_len(&nit->header, length); 1484 } 1485 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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