tree: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git for-kernelci head: ff82e3d211c59a97e583f6110bbfa5d4c7c8575c commit: 481c51818364cabbab09f8d8ede196fae77211cc [22/29] efi: libstub: Factor out EFI stub entrypoint into separate file config: x86_64-defconfig compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id=481c51818364cabbab09f8d8ede196fae77211cc git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git git fetch --no-tags ardb for-kernelci git checkout 481c51818364cabbab09f8d8ede196fae77211cc # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): ld: drivers/firmware/efi/libstub/x86-stub.stub.o: in function `efi_pe_entry': >> x86-stub.c:(.text+0x70b): multiple definition of `efi_pe_entry'; drivers/firmware/efi/libstub/efi-stub-entry.stub.o:efi-stub-entry.c:(.text+0x0): first defined here ld: drivers/firmware/efi/libstub/efi-stub-entry.stub.o: in function `efi_pe_entry': >> efi-stub-entry.c:(.text+0xdc): undefined reference to `efi_handle_cmdline' >> ld: efi-stub-entry.c:(.text+0x113): undefined reference to `handle_kernel_image' >> ld: efi-stub-entry.c:(.text+0x142): undefined reference to `efi_stub_common' ld: arch/x86/boot/compressed/vmlinux: hidden symbol `handle_kernel_image' isn't defined ld: final link failed: bad value -- 0-DAY CI Kernel Test Service https://01.org/lkp