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: f90cf6079bf67988f8b1ad1ade70fc89d0080905 media: vidtv: add a bridge driver date: 5 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=f90cf6079bf67988f8b1ad1ade70fc89d0080905 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout f90cf6079bf67988f8b1ad1ade70fc89d0080905 # 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:667:31: 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:678:32: 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:710:32: 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:97:19: 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:112:19: 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:127:19: 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) ^ 6 warnings generated. -- >> drivers/media/test-drivers/vidtv/vidtv_channel.c:133:27: warning: taking address of packed member 'descriptor' of class or structure 'vidtv_psi_table_sdt_service' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_desc_assign(&tail->descriptor, desc); ^~~~~~~~~~~~~~~~ >> drivers/media/test-drivers/vidtv/vidtv_channel.c:231:29: warning: taking address of packed member 'descriptor' of class or structure 'vidtv_psi_table_pmt_stream' may result in an unaligned pointer value [-Waddress-of-packed-member] vidtv_psi_desc_assign(&tail->descriptor, desc); ^~~~~~~~~~~~~~~~ 2 warnings generated. vim +667 drivers/media/test-drivers/vidtv/vidtv_psi.c 655 656 void vidtv_psi_pmt_table_update_sec_len(struct vidtv_psi_table_pmt *pmt) 657 { 658 /* see ISO/IEC 13818-1 : 2000 p.46 */ 659 u16 length = 0; 660 struct vidtv_psi_table_pmt_stream *s = pmt->stream; 661 u16 desc_loop_len; 662 663 /* from immediately after 'section_length' until 'program_info_length'*/ 664 length += PMT_LEN_UNTIL_PROGRAM_INFO_LENGTH; 665 666 desc_loop_len = vidtv_psi_desc_comp_loop_len(pmt->descriptor); > 667 vidtv_psi_set_desc_loop_len(&pmt->bitfield2, desc_loop_len, 10); 668 669 length += desc_loop_len; 670 671 while (s) { 672 /* skip both pointers at the end */ 673 length += sizeof(struct vidtv_psi_table_pmt_stream) - 674 sizeof(struct vidtv_psi_desc *) - 675 sizeof(struct vidtv_psi_table_pmt_stream *); 676 677 desc_loop_len = vidtv_psi_desc_comp_loop_len(s->descriptor); > 678 vidtv_psi_set_desc_loop_len(&s->bitfield2, desc_loop_len, 10); 679 680 length += desc_loop_len; 681 682 s = s->next; 683 } 684 685 length += CRC_SIZE_IN_BYTES; 686 687 vidtv_psi_set_sec_len(&pmt->header, length); 688 } 689 690 void vidtv_psi_sdt_table_update_sec_len(struct vidtv_psi_table_sdt *sdt) 691 { 692 /* see ETSI EN 300 468 V 1.10.1 p.24 */ 693 u16 length = 0; 694 struct vidtv_psi_table_sdt_service *s = sdt->service; 695 u16 desc_loop_len; 696 697 /* 698 * from immediately after 'section_length' until 699 * 'reserved_for_future_use' 700 */ 701 length += SDT_LEN_UNTIL_RESERVED_FOR_FUTURE_USE; 702 703 while (s) { 704 /* skip both pointers at the end */ 705 length += sizeof(struct vidtv_psi_table_sdt_service) - 706 sizeof(struct vidtv_psi_desc *) - 707 sizeof(struct vidtv_psi_table_sdt_service *); 708 709 desc_loop_len = vidtv_psi_desc_comp_loop_len(s->descriptor); > 710 vidtv_psi_set_desc_loop_len(&s->bitfield, desc_loop_len, 12); 711 712 length += desc_loop_len; 713 714 s = s->next; 715 } 716 717 length += CRC_SIZE_IN_BYTES; 718 719 vidtv_psi_set_sec_len(&sdt->header, length); 720 } 721 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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