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powerpc/kprobes: Blacklist emulate_update_regs() from kprobes

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Commit 3cdfcbfd32 ("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>
This commit is contained in:
Naveen N. Rao 2017-10-23 22:07:40 +05:30 committed by Michael Ellerman
parent f72180cc93
commit 67ac0bfe29
1 changed files with 1 additions and 0 deletions
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arch/powerpc/lib/sstep.c
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@ -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.