Date: Fri, 29 Nov 2019 11:29:13 +0000 From: Mark Rutland <mark.rutland@....com> To: Kassad <aashad940@...il.com> Cc: kernel-hardening@...ts.openwall.com, keescook@...omium.org Subject: Re: Contributing to KSPP newbie On Thu, Nov 28, 2019 at 11:39:11PM -0500, Kassad wrote: > Hey Kees, > > I'm 3rd university student interested in learning more about the linux kernel. > I'm came across this subsystem, since it aligns with my interest in security. > Do you think as a newbie this task https://github.com/KSPP/linux/issues/11 will > be a good starting point? I think this specific task (Disable arm32 kuser helpers) has already been done, and the ticket is stale. On arm CONFIG_KUSER_HELPERS can be disabled on kernels that don't need to run on HW prior to ARMv6. See commit: f6f91b0d9fd971c6 ("ARM: allow kuser helpers to be removed from the vector page") On arm64, CONFIG_KUSER_HELPERS can be disabled on any kernel. See commit: 1b3cf2c2a3f42b ("arm64: compat: Add KUSER_HELPERS config option") Thanks, Mark.
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