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authorBenjamin Gray <bgray@linux.ibm.com>2023-07-10 14:41:43 +1000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-08-23 17:52:27 +0200
commita1ceb871284fb14d687091537e63818842c83c01 (patch)
tree9c1d11fa165552bba747baed82409bfa9d106310 /arch
parent6d06cf0f0238704531522bfae17fc3c8cacb2048 (diff)
downloadlinux-a1ceb871284fb14d687091537e63818842c83c01.tar.gz
powerpc/kasan: Disable KCOV in KASAN code
[ Upstream commit ccb381e1af1ace292153c88eb1fffa5683d16a20 ]

As per the generic KASAN code in mm/kasan, disable KCOV with
KCOV_INSTRUMENT := n in the makefile.

This fixes a ppc64 boot hang when KCOV and KASAN are enabled.
kasan_early_init() gets called before a PACA is initialised, but the
KCOV hook expects a valid PACA.

Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230710044143.146840-1-bgray@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/mm/kasan/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/mm/kasan/Makefile b/arch/powerpc/mm/kasan/Makefile
index 699eeffd9f55..f9522fd70b2f 100644
--- a/arch/powerpc/mm/kasan/Makefile
+++ b/arch/powerpc/mm/kasan/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 
 KASAN_SANITIZE := n
+KCOV_INSTRUMENT := n
 
 obj-$(CONFIG_PPC32)		+= init_32.o
 obj-$(CONFIG_PPC_8xx)		+= 8xx.o