| Message ID | 20180305111824.GA4216@pjb1027-Latitude-E5410 (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 7e3d535..3765336 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -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 diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c index 16a8a80..4a247ac 100644 --- a/arch/arm/boot/compressed/misc.c +++ b/arch/arm/boot/compressed/misc.c @@ -167,3 +167,8 @@ void __stack_chk_fail(void) else putstr(" done, booting the kernel.\n"); } + +void fortify_panic(const char *name) +{ + error("detected buffer overflow"); +}
CONFIG_FORTIFY_SOURCE detects various overflows at compile-time. (6974f0c4555e ("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> --- v2: Add fortify_panic() in arch/arm/boot/compressed/misc.c, Because there will be a build error if without that function. --- arch/arm/Kconfig | 1 + arch/arm/boot/compressed/misc.c | 5 +++++ 2 files changed, 6 insertions(+)