Commit ee333554 authored Mar 06, 2018 by Jinbum Park Committed by Russell King Mar 28, 2018

ARM: 8749/1: Kconfig: Add ARCH_HAS_FORTIFY_SOURCE



CONFIG_FORTIFY_SOURCE detects various overflows at compile-time.
(6974f0c4 ("include/linux/string.h:
add the option of fortified string.h functions)

ARCH_HAS_FORTIFY_SOURCE means that the architecture can be built and
run with CONFIG_FORTIFY_SOURCE.

Since ARM can be built and run with that flag like other architectures,
select ARCH_HAS_FORTIFY_SOURCE as default.

Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

parent 7928b2cb

arch/arm/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -7,6 +7,7 @@ config ARM
		select ARCH_HAS_DEBUG_VIRTUAL if MMU
		select ARCH_HAS_DEVMEM_IS_ALLOWED
		select ARCH_HAS_ELF_RANDOMIZE
		select ARCH_HAS_FORTIFY_SOURCE
		select ARCH_HAS_SET_MEMORY
		select ARCH_HAS_PHYS_TO_DMA
		select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL

arch/arm/boot/compressed/misc.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -167,3 +167,8 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
		else
		putstr(" done, booting the kernel.\n");
		}

		void fortify_panic(const char *name)
		{
		error("detected buffer overflow");
		}

Admin message