Date: Tue, 23 Jun 2020 21:52:08 -0700 From: Kees Cook <keescook@...omium.org> To: Kristen Carlson Accardi <kristen@...ux.intel.com> Cc: tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, Arnd Bergmann <arnd@...db.de>, arjan@...ux.intel.com, linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com, rick.p.edgecombe@...el.com, Tony Luck <tony.luck@...el.com>, linux-arch@...r.kernel.org Subject: Re: [PATCH v3 05/10] x86: Make sure _etext includes function sections On Tue, Jun 23, 2020 at 10:23:22AM -0700, Kristen Carlson Accardi wrote: > When using -ffunction-sections to place each function in > it's own text section so it can be randomized at load time, the > linker considers these .text.* sections "orphaned sections", and > will place them after the first similar section (.text). In order > to accurately represent the end of the text section and the > orphaned sections, _etext must be moved so that it is after both > .text and .text.* The text size must also be calculated to > include .text AND .text.* > > Signed-off-by: Kristen Carlson Accardi <kristen@...ux.intel.com> Reviewed-by: Kees Cook <keescook@...omium.org> -- Kees Cook
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