diff options
| author | Daniel Axtens <dja@axtens.net> | 2016-01-20 23:00:58 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-21 01:09:18 (GMT) |
| commit | bf76f73c5f6554df1bd337aea5b3ea561f09632c (patch) | |
| tree | 5719fb8079f122e75e3cc6b5a654907601e91b90 /arch/powerpc/kernel | |
| parent | c6d308534aef6c99904bf5862066360ae067abc4 (diff) | |
| download | linux-bf76f73c5f6554df1bd337aea5b3ea561f09632c.tar.xz | |
powerpc: enable UBSAN support
This hooks up UBSAN support for PowerPC.
So far it's found some interesting cases where we don't properly sanitise
input to shifts, including one in our futex handling. Nothing critical,
but interesting and worth fixing.
[valentinrothberg@gmail.com: arch/powerpc/Kconfig: fix typo in select statement]
Signed-off-by: Daniel Axtens <dja@axtens.net>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 8 | ||||
| -rw-r--r-- | arch/powerpc/kernel/vdso32/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/vdso64/Makefile | 1 |
3 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index ba33693..794f22a 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -136,12 +136,18 @@ endif obj-$(CONFIG_EPAPR_PARAVIRT) += epapr_paravirt.o epapr_hcalls.o obj-$(CONFIG_KVM_GUEST) += kvm.o kvm_emul.o -# Disable GCOV in odd or sensitive code +# Disable GCOV & sanitizers in odd or sensitive code GCOV_PROFILE_prom_init.o := n +UBSAN_SANITIZE_prom_init.o := n GCOV_PROFILE_ftrace.o := n +UBSAN_SANITIZE_ftrace.o := n GCOV_PROFILE_machine_kexec_64.o := n +UBSAN_SANITIZE_machine_kexec_64.o := n GCOV_PROFILE_machine_kexec_32.o := n +UBSAN_SANITIZE_machine_kexec_32.o := n GCOV_PROFILE_kprobes.o := n +UBSAN_SANITIZE_kprobes.o := n +UBSAN_SANITIZE_vdso.o := n extra-$(CONFIG_PPC_FPU) += fpu.o extra-$(CONFIG_ALTIVEC) += vector.o diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile index 6abffb7..cbabd14 100644 --- a/arch/powerpc/kernel/vdso32/Makefile +++ b/arch/powerpc/kernel/vdso32/Makefile @@ -15,6 +15,7 @@ targets := $(obj-vdso32) vdso32.so vdso32.so.dbg obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) GCOV_PROFILE := n +UBSAN_SANITIZE := n ccflags-y := -shared -fno-common -fno-builtin ccflags-y += -nostdlib -Wl,-soname=linux-vdso32.so.1 \ diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile index 8c8f2ae..c710802 100644 --- a/arch/powerpc/kernel/vdso64/Makefile +++ b/arch/powerpc/kernel/vdso64/Makefile @@ -8,6 +8,7 @@ targets := $(obj-vdso64) vdso64.so vdso64.so.dbg obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) GCOV_PROFILE := n +UBSAN_SANITIZE := n ccflags-y := -shared -fno-common -fno-builtin ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ |