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SubjectRe: [PATCH v4 00/10] Function Granular KASLR
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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:

klp_init_object
klp_init_object_loaded
klp_find_object_symbol

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

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

-- Joe

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