diff options
| author | Borislav Petkov <bp@suse.de> | 2021-02-08 16:43:30 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-23 13:58:13 +0100 |
| commit | 0769ec67ae0a37a1ae4bbcb709bcb20e7cbbffce (patch) | |
| tree | 54b4b112462c1c6e7d112ef727e52afb53e8c4ce | |
| parent | 15da94e7ae338690bbdb4d6f89dae6624bd176c9 (diff) | |
x86/build: Disable CET instrumentation in the kernel for 32-bit too
commit 256b92af784d5043eeb7d559b6d5963dcc2ecb10 upstream.
Commit
20bf2b378729 ("x86/build: Disable CET instrumentation in the kernel")
disabled CET instrumentation which gets added by default by the Ubuntu
gcc9 and 10 by default, but did that only for 64-bit builds. It would
still fail when building a 32-bit target. So disable CET for all x86
builds.
Fixes: 20bf2b378729 ("x86/build: Disable CET instrumentation in the kernel")
Reported-by: AC <achirvasub@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: AC <achirvasub@gmail.com>
Link: https://lkml.kernel.org/r/YCCIgMHkzh/xT4ex@arch-chirva.localdomain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/Makefile | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index e59dc138b24e..5fece9334f12 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -61,6 +61,9 @@ endif KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow KBUILD_CFLAGS += $(call cc-option,-mno-avx,) +# Intel CET isn't enabled in the kernel +KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) + ifeq ($(CONFIG_X86_32),y) BITS := 32 UTS_MACHINE := i386 @@ -137,9 +140,6 @@ else KBUILD_CFLAGS += -mno-red-zone KBUILD_CFLAGS += -mcmodel=kernel - # Intel CET isn't enabled in the kernel - KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) - # -funit-at-a-time shrinks the kernel .text considerably # unfortunately it makes reading oopses harder. KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |