Re: drivers/firmware/efi/libstub/zboot.c:163:1: sparse: sparse: symbol 'efi_zboot_entry' was not declared. Should it be static?

[Ard Biesheuvel]

This is another spurious report of an asmlinkage symbol.

On Tue, 18 Oct 2022 at 21:49, kernel test robot <lkp@xxxxxxxxx> wrote:
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   bb1a1146467ad812bb65440696df0782e2bc63c8
> commit: a050910972bb25152b42ad2e544652117c5ad915 efi/libstub: implement generic EFI zboot
> date:   4 weeks ago
> config: riscv-randconfig-s043-20221018
> compiler: riscv64-linux-gcc (GCC) 12.1.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # apt-get install sparse
>         # sparse version: v0.6.4-39-gce1a6720-dirty
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a050910972bb25152b42ad2e544652117c5ad915
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout a050910972bb25152b42ad2e544652117c5ad915
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash drivers/firmware/efi/libstub/ lib/xz/
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> sparse warnings: (new ones prefixed by >>)
>    WARNING: invalid argument to '-march': '_zihintpause'
>    drivers/firmware/efi/libstub/zboot.c: note: in included file (through drivers/firmware/efi/libstub/../../../../lib/decompress_unxz.c):
> >> drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:393:28: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:393:28: sparse:     expected restricted __le32 const [usertype] *p
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:393:28: sparse:     got unsigned int const [usertype] *
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:427:48: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:427:48: sparse:     expected restricted __le32 const [usertype] *p
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:427:48: sparse:     got unsigned int const [usertype] *
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:435:37: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:435:37: sparse:     expected restricted __le32 const [usertype] *p
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:435:37: sparse:     got unsigned int const [usertype] *
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:459:28: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:459:28: sparse:     expected restricted __le32 const [usertype] *p
>    drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:459:28: sparse:     got unsigned int const [usertype] *
> >> drivers/firmware/efi/libstub/zboot.c:163:1: sparse: sparse: symbol 'efi_zboot_entry' was not declared. Should it be static?
>
> vim +/efi_zboot_entry +163 drivers/firmware/efi/libstub/zboot.c
>
>    161
>    162  asmlinkage efi_status_t __efiapi
>  > 163  efi_zboot_entry(efi_handle_t handle, efi_system_table_t *systab)
>
> --
> 0-DAY CI Kernel Test Service
> https://01.org/lkp