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Date: Sun, 25 Dec 2016 12:13:20 +0900 From: Masami Hiramatsu <mhiramat@...nel.org> To: Josh Poimboeuf <jpoimboe@...hat.com> Cc: linux-kernel@...r.kernel.org, x86@...nel.org Subject: Re: Detecting kprobes generated code addresses On Thu, 22 Dec 2016 00:42:19 -0600 Josh Poimboeuf <jpoimboe@...hat.com> wrote: > Hi Masami, > > I would like to make __kernel_text_address() be able to detect whether > an address belongs to code which was generated by kprobes. As far as I > can tell, that information seems to be in the 'pages' lists of > kprobe_insn_slots and kprobe_optinsn_slots. But they seem to be > protected by mutexes. Right. It is currently under mutex because it may kick page allocation. But I think it is easy to fix that :) > Do you know if there's a sleep-free way to access > that information? Hmm, no, I couldn't find that yet. Thanks, -- Masami Hiramatsu <mhiramat@...nel.org>
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