On Tue, Nov 01, 2022 at 03:07:49AM +1000, John Thomson wrote:
> In the mips CONFIG_SYS_SUPPORTS_ZBOOT kernel, fix the compile error
> when using CONFIG_FORTIFY_SOURCE=y
>
> LD vmlinuz
> mipsel-openwrt-linux-musl-ld: arch/mips/boot/compressed/decompress.o: in
> function `decompress_kernel':
> ./include/linux/decompress/mm.h:(.text.decompress_kernel+0x177c):
> undefined reference to `warn_slowpath_fmt'
>
> kernel test robot helped identify this as related to fortify. The error
> appeared with commit 54d9469bc515 ("fortify: Add run-time WARN for
> cross-field memcpy()")
> Link: https://lore.kernel.org/r/202209161144.x9xSqNQZ-lkp@xxxxxxxxx/
>
> Resolve this in the same style as commit cfecea6ead5f ("lib/string:
> Move helper functions out of string.c")
>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Fixes: 54d9469bc515 ("fortify: Add run-time WARN for cross-field memcpy()")
> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
> Signed-off-by: John Thomson <git@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> ---
> v2:
> fix subject typo: FORITFY->FORTIFY
> ---
> arch/mips/boot/compressed/decompress.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/mips/boot/compressed/decompress.c b/arch/mips/boot/compressed/decompress.c
> index 5b38a802e101..c5dd415254d3 100644
> --- a/arch/mips/boot/compressed/decompress.c
> +++ b/arch/mips/boot/compressed/decompress.c
> @@ -9,6 +9,7 @@
>
> #define DISABLE_BRANCH_PROFILING
>
> +#define __NO_FORTIFY
> #include <linux/types.h>
> #include <linux/kernel.h>
> #include <linux/string.h>
> --
> 2.37.2
applied to mips-fixes.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
