From: Nemanja Rakovic nemanja.rakovic@syrmia.com
[ Upstream commit e0a8b93efa2382d370be44bf289157de7e5dacb4 ]
This patch enables KCSAN for the 64-bit version. Updated rules for the incompatible compilation units (vdso, boot/compressed).
Signed-off-by: Nemanja Rakovic nemanja.rakovic@syrmia.com Signed-off-by: Thomas Bogendoerfer tsbogend@alpha.franken.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/Kconfig | 1 + arch/mips/boot/compressed/Makefile | 1 + arch/mips/vdso/Makefile | 3 +++ 3 files changed, 5 insertions(+)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 058446f01487..651d4fe355da 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -101,6 +101,7 @@ config MIPS select TRACE_IRQFLAGS_SUPPORT select VIRT_TO_BUS select ARCH_HAS_ELFCORE_COMPAT + select HAVE_ARCH_KCSAN if 64BIT
config MIPS_FIXUP_BIGPHYS_ADDR bool diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index 5a15d51e8884..a35f78212ea9 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -38,6 +38,7 @@ KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ KCOV_INSTRUMENT := n GCOV_PROFILE := n UBSAN_SANITIZE := n +KASAN_SANITIZE := n
# decompressor objects (linked with vmlinuz) vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile index d65f55f67e19..f72658b3a53f 100644 --- a/arch/mips/vdso/Makefile +++ b/arch/mips/vdso/Makefile @@ -1,6 +1,9 @@ # SPDX-License-Identifier: GPL-2.0 # Objects to go into the VDSO.
+# Sanitizer runtimes are unavailable and cannot be linked here. + KCSAN_SANITIZE := n + # Absolute relocation type $(ARCH_REL_TYPE_ABS) needs to be defined before # the inclusion of generic Makefile. ARCH_REL_TYPE_ABS := R_MIPS_JUMP_SLOT|R_MIPS_GLOB_DAT