Messages in this thread | | | Date | Fri, 22 Feb 2019 00:58:12 +0900 | From | Masami Hiramatsu <> | Subject | Re: [PATCH 1/2 v2] kprobe: Do not use uaccess functions to access kernel memory that can fault |
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On Thu, 21 Feb 2019 09:36:25 -0500 Steven Rostedt <rostedt@goodmis.org> wrote:
> On Thu, 21 Feb 2019 16:52:52 +0900 > Masami Hiramatsu <mhiramat@kernel.org> wrote: > > > Basically OK to me. > > Could you use probe_kernel_read() in this context, since probe_mem_read() is a > > wrapper function for template code. > > > > With that change, > > > > Acked-by: Masami Hiramatsu <mhiramat@kernel.org> > > This already hit Linus's tree. I was able to reproduce the crash, so I > streamlined it. I should have still pushed more for your ack first. > Sorry about that.
Oh, never mind. That seems urgent issue for kprobe event. Thank you very much for fixing it!
> For some reason, I thought the change was in the generic probe code, > and accepted the probe_mem_read(). Anyway, did you want to send a patch > to change it to probe_kernel_read(), for the merge window?
No problem.
> > And for the long term, I need to find more efficient (or smarter) way to do it, > > like strnlen_user() does. > > Agreed.
Thank you,
-- Masami Hiramatsu <mhiramat@kernel.org>
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