Unverified Commit 1e35918a authored by Hassan Naveed's avatar Hassan Naveed Committed by Paul Burton
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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: default avatarHassan Naveed <hnaveed@wavecomp.com>
Reviewed-by: default avatarPaul Burton <paul.burton@mips.com>
Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21179/
Cc: <linux-mips@linux-mips.org>
parent f3ade253

arch/mips/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/mips/vdso/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ VDSO_LDFLAGS := \ 
	$(call cc-ldoption, -Wl$(comma)--build-id)



GCOV_PROFILE := n

UBSAN_SANITIZE := n



#

# Shared build commands.