Thread (16 messages) 16 messages, 7 authors, 2018-07-06

Re: [PATCH] x86/crypto: Add missing RETs

From: Ingo Molnar <mingo@kernel.org>
Date: 2018-07-06 14:57:46
Also in: lkml

* Josh Poimboeuf [off-list ref] wrote:
quoted
Great, I'd be perfectly fine with such an approach.

Also, if we have that then we could re-apply Alexey's patch and switch to INT3 
(only on 64-bit kernels) without any trouble, because objtool should detect any 
execution flow bugs before the INT3 could trigger, right?

I.e. any INT3 fault would show a combination of *both* an objtool bug and a 
probable code flow bug - which I suspect would warrant crashing the box ...
Sounds good to me.  I can take Alexey's patch and submit a 64-bit
version of it, along with the relevant objtool changes (though it may
still be a few weeks before I get the chance).
Sounds good to me, thanks!

	Ingo
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