From: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Date: Wed, 19 Apr 2017 15:29:52 +0000 (+0530)
Subject: powerpc/kprobes: Blacklist common exception handlers
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9a914aa6824ac5d5fd3195ed422f31540a0ab767;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

powerpc/kprobes: Blacklist common exception handlers

Blacklist all the exception common/OOL handlers as the kernel stack is not yet
setup, which means we can't take a trap at this point.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h
index 5067048daad4..86eb87382031 100644
--- a/arch/powerpc/include/asm/head-64.h
+++ b/arch/powerpc/include/asm/head-64.h
@@ -213,6 +213,7 @@ name:
 	USE_TEXT_SECTION();					\
 	.balign IFETCH_ALIGN_BYTES;				\
 	.global name;						\
+	_ASM_NOKPROBE_SYMBOL(name);				\
 	DEFINE_FIXED_SYMBOL(name);				\
 name: