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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Jouni Hogander <jouni.hogander@unikie.com>,
	Paul Burton <paulburton@kernel.org>,
	Lukas Bulwahn <lukas.bulwahn@gmail.com>,
	linux-mips@vger.kernel.org, Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.4 04/26] MIPS: Prevent link failure with kcov instrumentation
Date: Fri, 10 Jan 2020 17:02:46 -0500	[thread overview]
Message-ID: <20200110220308.27784-4-sashal@kernel.org> (raw)
In-Reply-To: <20200110220308.27784-1-sashal@kernel.org>

From: Jouni Hogander <jouni.hogander@unikie.com>

[ 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 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index 172801ed35b8..d859f079b771 100644
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -29,6 +29,9 @@ KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
 	-DBOOT_HEAP_SIZE=$(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
 
-- 
2.20.1


      parent reply	other threads:[~2020-01-10 22:03 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-10 22:02 [PATCH AUTOSEL 5.4 01/26] mips: cacheinfo: report shared CPU map Sasha Levin
2020-01-10 22:02 ` [PATCH AUTOSEL 5.4 02/26] mips: Fix gettimeofday() in the vdso library Sasha Levin
2020-01-10 22:02 ` [PATCH AUTOSEL 5.4 03/26] tomoyo: Suppress RCU warning at list_for_each_entry_rcu() Sasha Levin
2020-01-10 22:02 ` Sasha Levin [this message]

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