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The core functions of string.c are those that may be implemented by per-architecture functions, or overloaded by FORTIFY_SOURCE. As a result, it needs to be built with __NO_FORTIFY. Without this, macros will collide with function declarations. This was accidentally working due to -ffreestanding (on some architectures). Make this deterministic by explicitly setting __NO_FORTIFY and move all the helper functions into string_helpers.c so that they gain the fortification coverage they had been missing. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Andy Lavr <andy.lavr@gmail.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
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| .. | ||
| .gitignore | ||
| acpi.c | ||
| cmdline.c | ||
| cpuflags.c | ||
| early_serial_console.c | ||
| efi_thunk_64.S | ||
| error.c | ||
| error.h | ||
| head_32.S | ||
| head_64.S | ||
| ident_map_64.c | ||
| idt_64.c | ||
| idt_handlers_64.S | ||
| kaslr.c | ||
| kernel_info.S | ||
| Makefile | ||
| mem_encrypt.S | ||
| misc.c | ||
| misc.h | ||
| mkpiggy.c | ||
| pgtable_64.c | ||
| pgtable.h | ||
| sev.c | ||
| string.c | ||
| vmlinux.lds.S | ||