Hi 周琰杰, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 71c5f03154ac1cb27423b984743ccc2f5d11d14d commit: 31de313dfdcf6971b0a1c30f86eabaa1eede74b3 PHY: Ingenic: Add USB PHY driver using generic PHY framework. date: 3 weeks ago config: s390-randconfig-r031-20201224 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=31de313dfdcf6971b0a1c30f86eabaa1eede74b3 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 31de313dfdcf6971b0a1c30f86eabaa1eede74b3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All errors (new ones prefixed by >>): s390x-linux-gnu-ld: init/main.o: in function `do_initcalls': main.c:(.init.text+0x1a34): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: init/initramfs.o: in function `unpack_to_rootfs': initramfs.c:(.init.text+0x3c4): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: initramfs.c:(.init.text+0x3e0): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: initramfs.c:(.init.text+0x3fc): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: init/initramfs.o: in function `dir_add': initramfs.c:(.init.text+0x1748): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: init/initramfs.o:initramfs.c:(.init.text+0x1b62): more undefined references to `__ubsan_handle_alignment_assumption' follow s390x-linux-gnu-ld: drivers/phy/ingenic/phy-ingenic-usb.o: in function `ingenic_usb_phy_probe': phy-ingenic-usb.c:(.text+0x88): undefined reference to `devm_platform_ioremap_resource' s390x-linux-gnu-ld: drivers/gpio/gpiolib.o: in function `gpiochip_add_data_with_key': >> (.text+0x34f2): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: drivers/gpio/gpiolib.o: in function `kzalloc': gpiolib.c:(.text+0x5106): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: drivers/gpio/gpiolib.o: in function `kmalloc_array': gpiolib.c:(.text+0xc458): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: drivers/gpio/gpiolib-cdev.o: in function `gpio_ioctl': gpiolib-cdev.c:(.text+0x2a30): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: gpiolib-cdev.c:(.text+0x2b50): undefined reference to `__ubsan_handle_alignment_assumption' s390x-linux-gnu-ld: drivers/gpio/gpiolib-cdev.o:gpiolib-cdev.c:(.text+0x30da): more undefined references to `__ubsan_handle_alignment_assumption' follow --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip