diff options
| author | Daniel Axtens <[email protected]> | 2016-01-20 15:00:58 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-01-20 17:09:18 -0800 |
| commit | bf76f73c5f6554df1bd337aea5b3ea561f09632c (patch) | |
| tree | 5719fb8079f122e75e3cc6b5a654907601e91b90 | |
| parent | c6d308534aef6c99904bf5862066360ae067abc4 (diff) | |
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.
[[email protected]: arch/powerpc/Kconfig: fix typo in select statement]
Signed-off-by: Daniel Axtens <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Tested-by: Andrew Donnellan <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Signed-off-by: Valentin Rothberg <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | arch/powerpc/Kconfig | 1 | ||||
| -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 | ||||
| -rw-r--r-- | arch/powerpc/xmon/Makefile | 1 |
5 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 94f6c5089e0c..8310be4ffe31 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -158,6 +158,7 @@ config PPC select ARCH_HAS_DMA_SET_COHERENT_MASK select ARCH_HAS_DEVMEM_IS_ALLOWED select HAVE_ARCH_SECCOMP_FILTER + select ARCH_HAS_UBSAN_SANITIZE_ALL config GENERIC_CSUM def_bool CPU_LITTLE_ENDIAN diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index ba336930d448..794f22adf99d 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 6abffb7a8cd9..cbabd143acae 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 8c8f2ae43935..c710802b8fb6 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)/, $(obj-vdso64)) GCOV_PROFILE := n +UBSAN_SANITIZE := n ccflags-y := -shared -fno-common -fno-builtin ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile index 1278788d96e3..436062dbb6e2 100644 --- a/arch/powerpc/xmon/Makefile +++ b/arch/powerpc/xmon/Makefile @@ -3,6 +3,7 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror GCOV_PROFILE := n +UBSAN_SANITIZE := n ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) |