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| author | Kees Cook <keescook@chromium.org> | 2016-01-26 03:18:13 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2016-01-27 02:49:26 +0300 |
| commit | 7f66cd3f5420e7d11abd234033e7cb7a9738fc38 (patch) | |
| tree | e492f451afedc5a886987f678167575d29917742 | |
| parent | 92e963f50fc74041b5e9e744c330dca48e04f08d (diff) | |
| download | linux-7f66cd3f5420e7d11abd234033e7cb7a9738fc38.tar.xz | |
ARM: 8500/1: fix atags_to_fdt with stack-protector-strong
Building with CONFIG_CC_STACKPROTECTOR_STRONG triggers protection code
generation under CONFIG_ARM_ATAG_DTB_COMPAT but this is too early for
being able to use any of the stack_chk code. Explicitly disable it for
only the atags_to_fdt bits.
Suggested-by: zhxihu <zhxihu@marvell.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 4c23a68a0917..7a6a58ef8aaf 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -106,6 +106,15 @@ ORIG_CFLAGS := $(KBUILD_CFLAGS) KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) endif +# -fstack-protector-strong triggers protection checks in this code, +# but it is being used too early to link to meaningful stack_chk logic. +nossp_flags := $(call cc-option, -fno-stack-protector) +CFLAGS_atags_to_fdt.o := $(nossp_flags) +CFLAGS_fdt.o := $(nossp_flags) +CFLAGS_fdt_ro.o := $(nossp_flags) +CFLAGS_fdt_rw.o := $(nossp_flags) +CFLAGS_fdt_wip.o := $(nossp_flags) + ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) asflags-y := -DZIMAGE |