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Message-ID: <20210125221953.wng3gk3qc32eahil@treble> Date: Mon, 25 Jan 2021 16:19:53 -0600 From: Josh Poimboeuf <jpoimboe@...hat.com> To: Kees Cook <keescook@...omium.org> Cc: linux-kernel@...r.kernel.org, Masahiro Yamada <masahiroy@...nel.org>, Michal Marek <michal.lkml@...kovi.net>, linux-hardening@...r.kernel.org, linux-kbuild@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>, Justin Forbes <jforbes@...hat.com>, Ondrej Mosnacek <omosnace@...hat.com> Subject: Re: [PATCH RFC] gcc-plugins: Handle GCC version mismatch for OOT modules On Mon, Jan 25, 2021 at 02:03:07PM -0800, Kees Cook wrote: > On Mon, Jan 25, 2021 at 02:42:10PM -0600, Josh Poimboeuf wrote: > > When a GCC version mismatch is detected, print a warning and disable the > > plugin. The only exception is the RANDSTRUCT plugin which needs all > > code to see the same struct layouts. In that case print an error. > > I prefer this patch as-is: only randstruct needs a hard failure. The > others likely work (in fact, randstruct likely works too). I'm curious about this last statement, why would randstruct likely work? Even struct module has '__randomize_layout', wouldn't basic module init go splat? -- Josh
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