linux-kernel - Re: [PATCH v3 09/10] kallsyms: Hide layout

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Date:   Wed, 08 Jul 2020 09:47:55 -0700
From:   Kristen Carlson Accardi <kristen@...ux.intel.com>
To:     "Luck, Tony" <tony.luck@...el.com>,
        Kees Cook <keescook@...omium.org>, Jann Horn <jannh@...gle.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        the arch/x86 maintainers <x86@...nel.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
Subject: Re: [PATCH v3 09/10] kallsyms: Hide layout

On Tue, 2020-07-07 at 23:16 +0000, Luck, Tony wrote:
> > Signed-off-by: Kristen Carlson Accardi <kristen@...ux.intel.com>
> > Reviewed-by: Tony Luck <tony.luck@...el.com>
> > Tested-by: Tony Luck <tony.luck@...el.com>
> 
> I'll happily review and test again ... but since you've made
> substantive
> changes, you should drop these tags until I do.

Will do - thanks! If nobody thinks this is a horrible direction, I'll
clean up this patch and submit it with the rest as part of v4.

> 
> FWIW I think random order is a good idea.  Do you shuffle once?
> Or every time somebody opens /proc/kallsyms?

I am shuffling every single time that somebody opens /proc/kallsyms -
this is because it's possible that somebody has loaded modules or bpf
stuff and there may be new/different symbols to display.