From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 2/2] powerpc: kprobes: blacklist exception common handlers
Date: Wed, 19 Apr 2017 20:59:52 +0530 [thread overview]
Message-ID: <f71f8e55d7f5548103c5e0c29abb303db664a894.1492614257.git.naveen.n.rao@linux.vnet.ibm.com> (raw)
In-Reply-To: <cover.1492614257.git.naveen.n.rao@linux.vnet.ibm.com>
In-Reply-To: <cover.1492614257.git.naveen.n.rao@linux.vnet.ibm.com>
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>
---
arch/powerpc/include/asm/head-64.h | 1 +
1 file changed, 1 insertion(+)
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 @@ end_##sname:
USE_TEXT_SECTION(); \
.balign IFETCH_ALIGN_BYTES; \
.global name; \
+ _ASM_NOKPROBE_SYMBOL(name); \
DEFINE_FIXED_SYMBOL(name); \
name:
--
2.12.1
next prev parent reply other threads:[~2017-04-19 15:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-19 15:29 [PATCH 0/2] powerpc: kprobes: blacklist exception vectors Naveen N. Rao
2017-04-19 15:29 ` [PATCH 1/2] powerpc: kprobes: blacklist exception handlers Naveen N. Rao
2017-04-20 6:33 ` Michael Ellerman
2017-04-20 7:04 ` Naveen N. Rao
2017-04-20 12:30 ` Michael Ellerman
2017-04-23 11:53 ` [1/2] " Michael Ellerman
2017-04-19 15:29 ` Naveen N. Rao [this message]
2017-04-23 11:53 ` [2/2] powerpc: kprobes: blacklist exception common handlers Michael Ellerman
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