mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-03-02 15:31:59 -05:00
61b38f7591
Add a new Kconfig CONFIG_UBSAN_KVM_EL2 for KVM which enables UBSAN for EL2 code (in protected/nvhe/hvhe) modes. This will re-use the same checks enabled for the kernel for the hypervisor. The only difference is that for EL2 it always emits a "brk" instead of implementing hooks as the hypervisor can't print reports. The KVM code will re-use the same code for the kernel "report_ubsan_failure()" so #ifdefs are changed to also have this code for CONFIG_UBSAN_KVM_EL2 Signed-off-by: Mostafa Saleh <smostafa@google.com> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250430162713.1997569-4-smostafa@google.com Signed-off-by: Marc Zyngier <maz@kernel.org>
28 lines
1.3 KiB
Makefile
28 lines
1.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
# Shared with KVM/arm64.
|
|
export CFLAGS_UBSAN_TRAP := $(call cc-option,-fsanitize-trap=undefined,-fsanitize-undefined-trap-on-error)
|
|
|
|
# Enable available and selected UBSAN features.
|
|
ubsan-cflags-$(CONFIG_UBSAN_ALIGNMENT) += -fsanitize=alignment
|
|
ubsan-cflags-$(CONFIG_UBSAN_BOUNDS_STRICT) += -fsanitize=bounds-strict
|
|
ubsan-cflags-$(CONFIG_UBSAN_ARRAY_BOUNDS) += -fsanitize=array-bounds
|
|
ubsan-cflags-$(CONFIG_UBSAN_LOCAL_BOUNDS) += -fsanitize=local-bounds
|
|
ubsan-cflags-$(CONFIG_UBSAN_SHIFT) += -fsanitize=shift
|
|
ubsan-cflags-$(CONFIG_UBSAN_DIV_ZERO) += -fsanitize=integer-divide-by-zero
|
|
ubsan-cflags-$(CONFIG_UBSAN_UNREACHABLE) += -fsanitize=unreachable
|
|
ubsan-cflags-$(CONFIG_UBSAN_BOOL) += -fsanitize=bool
|
|
ubsan-cflags-$(CONFIG_UBSAN_ENUM) += -fsanitize=enum
|
|
ubsan-cflags-$(CONFIG_UBSAN_TRAP) += $(CFLAGS_UBSAN_TRAP)
|
|
|
|
export CFLAGS_UBSAN := $(ubsan-cflags-y)
|
|
|
|
ubsan-integer-wrap-cflags-$(CONFIG_UBSAN_INTEGER_WRAP) += \
|
|
-fsanitize-undefined-ignore-overflow-pattern=all \
|
|
-fsanitize=signed-integer-overflow \
|
|
-fsanitize=unsigned-integer-overflow \
|
|
-fsanitize=implicit-signed-integer-truncation \
|
|
-fsanitize=implicit-unsigned-integer-truncation \
|
|
-fsanitize-ignorelist=$(srctree)/scripts/integer-wrap-ignore.scl
|
|
export CFLAGS_UBSAN_INTEGER_WRAP := $(ubsan-integer-wrap-cflags-y)
|