From 67ac0bfe29e9b4359012a8961c196baa813c707a Mon Sep 17 00:00:00 2001
From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Date: Mon, 23 Oct 2017 22:07:40 +0530
Subject: powerpc/kprobes: Blacklist emulate_update_regs() from kprobes
Commit 3cdfcbfd32b9d ("powerpc: Change analyse_instr so it doesn't
modify *regs") introduced emulate_update_regs() to perform part of what
emulate_step() was doing earlier. However, this function was not added
to the kprobes blacklist. Add it so as to prevent it from being probed.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/lib/sstep.c | 1 +
1 file changed, 1 insertion(+)
(limited to 'arch')
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 8c3955e183d4..70274b7b4773 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -2717,6 +2717,7 @@ void emulate_update_regs(struct pt_regs *regs, struct instruction_op *op)
}
regs->nip = next_pc;
}
+NOKPROBE_SYMBOL(emulate_update_regs);
/*
* Emulate a previously-analysed load or store instruction.
--
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