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Date: Wed, 22 Jul 2020 10:56:39 -0400
From: Joe Lawrence <>
To: Kees Cook <>, Miroslav Benes <>
Cc: Kristen Carlson Accardi <>,,,,,,,,,
Subject: Re: [PATCH v4 00/10] Function Granular KASLR

On 7/22/20 10:51 AM, Joe Lawrence wrote:
> On 7/22/20 10:39 AM, Kees Cook wrote:
>> On Wed, Jul 22, 2020 at 11:27:30AM +0200, Miroslav Benes wrote:
>>> Let me CC live-patching ML, because from a quick glance this is something
>>> which could impact live patching code. At least it invalidates assumptions
>>> which "sympos" is based on.
>> In a quick skim, it looks like the symbol resolution is using
>> kallsyms_on_each_symbol(), so I think this is safe? What's a good
>> selftest for live-patching?
> Hi Kees,
> I don't think any of the in-tree tests currently exercise the
> kallsyms/sympos end of livepatching.

On second thought, I mispoke.. The general livepatch code does use it:


in which case any of the current kselftests should exercise that.

   % make -C tools/testing/selftests/livepatch run_tests

-- Joe

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