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authorHassan Naveed <hnaveed@wavecomp.com>2018-11-19 16:49:37 -0800
committerPaul Burton <paul.burton@mips.com>2018-11-20 12:23:06 -0800
commit1e35918ad9d1172efdc78e28cf0d2209194f3961 (patch)
tree0f3ea057f48d563de36a1b1396f87fb180474030 /arch
parentMIPS: Loongson: Add Loongson-3A R2.1 basic support (diff)
downloadlinux-dev-1e35918ad9d1172efdc78e28cf0d2209194f3961.tar.xz
linux-dev-1e35918ad9d1172efdc78e28cf0d2209194f3961.zip
MIPS: Enable Undefined Behavior Sanitizer UBSAN
Select ARCH_HAS_UBSAN_SANITIZE_ALL in order to allow the user to enable CONFIG_UBSAN_SANITIZE_ALL and instrument the entire kernel for ubsan checks. We exclude the VDSO from this because its build doesn't include the __ubsan_handle_*() functions that the kernel proper defines in from lib/ubsan.c, and the VDSO would have no sane way to report errors even if it had definitions of these functions. Signed-off-by: Hassan Naveed <hnaveed@wavecomp.com> Reviewed-by: Paul Burton <paul.burton@mips.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21179/ Cc: <linux-mips@linux-mips.org>
Diffstat (limited to '')
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/mips/vdso/Makefile1
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 7594308ab99d..e83a8cce41e9 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -7,6 +7,7 @@ config MIPS
select ARCH_DISCARD_MEMBLOCK
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_SUPPORTS_UPROBES
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
index 58a0315ad743..f6fd340e39c2 100644
--- a/arch/mips/vdso/Makefile
+++ b/arch/mips/vdso/Makefile
@@ -50,6 +50,7 @@ VDSO_LDFLAGS := \
$(call cc-ldoption, -Wl$(comma)--build-id)
GCOV_PROFILE := n
+UBSAN_SANITIZE := n
#
# Shared build commands.