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MIPS: Prevent link failure with kcov instrumentation
authorJouni Hogander <jouni.hogander@unikie.com>
Mon, 9 Dec 2019 12:37:07 +0000 (14:37 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 23 Jan 2020 07:19:37 +0000 (08:19 +0100)
[ Upstream commit a4a3893114a41e365274d5fab5d9ff5acc235ff0 ]

__sanitizer_cov_trace_pc() is not linked in and causing link
failure if KCOV_INSTRUMENT is enabled. Fix this by disabling
instrumentation for compressed image.

Signed-off-by: Jouni Hogander <jouni.hogander@unikie.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: linux-mips@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/mips/boot/compressed/Makefile patch | blob | blame | history

diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index ad31c76c7a296558c30cdeb4bea0a65ab7284170..2f77e250b91d7c68db8a2be9032fe6ddad454812 100644 (file)
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -29,6 +29,9 @@ KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
        -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
        -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
 
+# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
+KCOV_INSTRUMENT                := n
+
 # decompressor objects (linked with vmlinuz)
 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o