tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 41c03ba9beea760bd2d2ac9250b09a2e192da2dc commit: 7036440eab3e2d47a775d4616909f8235488d714 ARM: omap1: enable multiplatform date: 7 months ago config: arm-randconfig-r024-20230105 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 8d9828ef5aa9688500657d36cd2aefbe12bbd162) 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7036440eab3e2d47a775d4616909f8235488d714 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7036440eab3e2d47a775d4616909f8235488d714 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/scsi/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from drivers/scsi/pm8001/pm8001_hwi.c:42: >> drivers/scsi/pm8001/pm8001_hwi.h:402:2: warning: field within 'struct smp_req' is less aligned than 'union smp_req::(anonymous at drivers/scsi/pm8001/pm8001_hwi.h:402:2)' and is usually due to 'struct smp_req' being packed, which can lead to unaligned accesses [-Wunaligned-access] union { ^ In file included from drivers/scsi/pm8001/pm8001_hwi.c:40: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:62: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:13: In file included from include/linux/cpumask.h:12: In file included from include/linux/bitmap.h:11: In file included from include/linux/string.h:253: include/linux/fortify-string.h:352:4: warning: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Wattribute-warning] __read_overflow2_field(q_size_field, size); ^ 2 warnings generated. -- In file included from drivers/scsi/pm8001/pm80xx_hwi.c:42: >> drivers/scsi/pm8001/pm80xx_hwi.h:639:2: warning: field within 'struct smp_req' is less aligned than 'union smp_req::(anonymous at drivers/scsi/pm8001/pm80xx_hwi.h:639:2)' and is usually due to 'struct smp_req' being packed, which can lead to unaligned accesses [-Wunaligned-access] union { ^ In file included from drivers/scsi/pm8001/pm80xx_hwi.c:40: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:8: In file included from include/linux/spinlock.h:62: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:13: In file included from include/linux/cpumask.h:12: In file included from include/linux/bitmap.h:11: In file included from include/linux/string.h:253: include/linux/fortify-string.h:352:4: warning: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Wattribute-warning] __read_overflow2_field(q_size_field, size); ^ 2 warnings generated. vim +402 drivers/scsi/pm8001/pm8001_hwi.h dbf9bfe615717d jack wang 2009-10-14 387 dbf9bfe615717d jack wang 2009-10-14 388 /* dbf9bfe615717d jack wang 2009-10-14 389 * brief the data structure of SMP Request Command dbf9bfe615717d jack wang 2009-10-14 390 * use to describe MPI SMP REQUEST Command (64 bytes) dbf9bfe615717d jack wang 2009-10-14 391 */ dbf9bfe615717d jack wang 2009-10-14 392 struct smp_req { dbf9bfe615717d jack wang 2009-10-14 393 __le32 tag; dbf9bfe615717d jack wang 2009-10-14 394 __le32 device_id; dbf9bfe615717d jack wang 2009-10-14 395 __le32 len_ip_ir; dbf9bfe615717d jack wang 2009-10-14 396 /* Bits [0] - Indirect response */ dbf9bfe615717d jack wang 2009-10-14 397 /* Bits [1] - Indirect Payload */ dbf9bfe615717d jack wang 2009-10-14 398 /* Bits [15:2] - Reserved */ dbf9bfe615717d jack wang 2009-10-14 399 /* Bits [23:16] - direct payload Len */ dbf9bfe615717d jack wang 2009-10-14 400 /* Bits [31:24] - Reserved */ dbf9bfe615717d jack wang 2009-10-14 401 u8 smp_req16[16]; dbf9bfe615717d jack wang 2009-10-14 @402 union { dbf9bfe615717d jack wang 2009-10-14 403 u8 smp_req[32]; dbf9bfe615717d jack wang 2009-10-14 404 struct { dbf9bfe615717d jack wang 2009-10-14 405 __le64 long_req_addr;/* sg dma address, LE */ dbf9bfe615717d jack wang 2009-10-14 406 __le32 long_req_size;/* LE */ dbf9bfe615717d jack wang 2009-10-14 407 u32 _r_a; dbf9bfe615717d jack wang 2009-10-14 408 __le64 long_resp_addr;/* sg dma address, LE */ dbf9bfe615717d jack wang 2009-10-14 409 __le32 long_resp_size;/* LE */ dbf9bfe615717d jack wang 2009-10-14 410 u32 _r_b; dbf9bfe615717d jack wang 2009-10-14 411 } long_smp_req;/* sequencer extension */ dbf9bfe615717d jack wang 2009-10-14 412 }; dbf9bfe615717d jack wang 2009-10-14 413 } __attribute__((packed, aligned(4))); dbf9bfe615717d jack wang 2009-10-14 414 /* dbf9bfe615717d jack wang 2009-10-14 415 * brief the data structure of SMP Completion Response dbf9bfe615717d jack wang 2009-10-14 416 * use to describe MPI SMP Completion Response (64 bytes) dbf9bfe615717d jack wang 2009-10-14 417 */ dbf9bfe615717d jack wang 2009-10-14 418 struct smp_completion_resp { dbf9bfe615717d jack wang 2009-10-14 419 __le32 tag; dbf9bfe615717d jack wang 2009-10-14 420 __le32 status; dbf9bfe615717d jack wang 2009-10-14 421 __le32 param; dbf9bfe615717d jack wang 2009-10-14 422 __le32 _r_a[12]; dbf9bfe615717d jack wang 2009-10-14 423 } __attribute__((packed, aligned(4))); dbf9bfe615717d jack wang 2009-10-14 424 :::::: The code at line 402 was first introduced by commit :::::: dbf9bfe615717d1145f263c0049fe2328e6ed395 [SCSI] pm8001: add SAS/SATA HBA driver :::::: TO: jack wang :::::: CC: James Bottomley -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests