linux-kernel - Re: Query: How to blacklist asm symbols for kprobe

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Message-ID: <20150703100739.GD21990@dhcppc13.redhat.com>
Date:	Fri, 3 Jul 2015 15:37:39 +0530
From:	Pratyush Anand <panand@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	masami.hiramatsu.pt@...achi.com, dave.long@...aro.org,
	will.deacon@....com
Subject: Re: Query: How to blacklist asm symbols for kprobe

On 29/06/2015:02:46:13 PM, Pratyush Anand wrote:
> Hi,
> 
> There might be some symbols defined in asm file, which need to be
> prevented for kprobe-ing.
> 
> For example, el0_sync, el1_sync, el0_dbg, el1_dbg etc (in
> arch/arm64/kernel/entry.S) should be added to the kprobe blacklist
> table. How can we do that?

I think, we need to define them under "section .entry.text" and then
to use arch_within_kprobe_blacklist to prevent such symbols from kprobing.

~Pratyush
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