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From: Joe Lawrence <joe.lawrence@redhat.com>
To: Kees Cook <keescook@chromium.org>, Miroslav Benes <mbenes@suse.cz>
Cc: Kristen Carlson Accardi <kristen@linux.intel.com>,
	tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
	arjan@linux.intel.com, x86@kernel.org,
	linux-kernel@vger.kernel.org,
	kernel-hardening@lists.openwall.com, rick.p.edgecombe@intel.com,
	live-patching@vger.kernel.org
Subject: Re: [PATCH v4 00/10] Function Granular KASLR
Date: Wed, 22 Jul 2020 10:51:32 -0400
Message-ID: <aa51eb26-e2a9-c448-a3b8-e9e68deeb468@redhat.com> (raw)
In-Reply-To: <202007220738.72F26D2480@keescook>

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.

I do have a local branch that does facilitate creating klp-relocations 
that do rely upon this feature -- I'll try to see if I can get those 
working with this patchset and report back later this week.

-- Joe


  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200717170008.5949-1-kristen@linux.intel.com>
2020-07-22  9:27 ` Miroslav Benes
2020-07-22 14:39   ` Kees Cook
2020-07-22 14:51     ` Joe Lawrence [this message]
2020-07-22 14:56       ` Joe Lawrence
2020-07-22 18:24         ` Kristen Carlson Accardi
2020-07-22 16:07     ` Josh Poimboeuf
2020-07-22 19:42       ` Kees Cook
2020-07-22 19:56         ` Kristen Carlson Accardi
2020-07-22 21:33           ` Josh Poimboeuf
2020-08-03 11:39   ` Evgenii Shatokhin
2020-08-03 17:45     ` Kees Cook
2020-08-03 18:17       ` Joe Lawrence
2020-08-03 19:38         ` Frank Ch. Eigler
2020-08-03 20:11           ` Kees Cook
2020-08-03 21:12             ` Frank Ch. Eigler
2020-08-03 21:41               ` Kees Cook
2020-08-04  0:48                 ` Frank Ch. Eigler
2020-08-04 17:04         ` Jessica Yu
2020-08-04 18:23 ` Joe Lawrence

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