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SubjectRE: [PATCH v5 1/2] x86/speculation: apply IBPB more strictly to avoid cross-process data leak
On Mon, 10 Sep 2018, Schaufler, Casey wrote:

> Yes, It would require that this patch be tested against all the existing
> security modules that provide a ptrace_access_check hook. It's not like
> the security module writers don't have a bunch of locking issues to deal
> with.

Yeah, that was indeed my concern.

So can we agree on doing this in the 2nd envisioned step, when this is
going to be replaced by LSM as discussed [1] previously?

[1] http://lkml.kernel.org/r/99FC4B6EFCEFD44486C35F4C281DC67321447094@ORSMSX107.amr.corp.intel.com

Thanks,

--
Jiri Kosina
SUSE Labs

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