Messages in this thread | | | Subject | Re: [PATCH v4 00/10] Function Granular KASLR | From | Joe Lawrence <> | Date | Wed, 22 Jul 2020 10:56:39 -0400 |
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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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