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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id l22sm3506944pfc.27.2020.09.01.16.18.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2020 16:18:06 -0700 (PDT) Date: Tue, 1 Sep 2020 16:18:05 -0700 From: Kees Cook To: Nick Desaulniers Cc: Michael Ellerman , Masahiro Yamada , Nicholas Piggin , Ingo Molnar , Borislav Petkov , Catalin Marinas , Mark Rutland , Ard Biesheuvel , Peter Collingbourne , James Morse , Ingo Molnar , Russell King , Arvind Sankar , Nathan Chancellor , Arnd Bergmann , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , clang-built-linux , linux-arch , linux-efi , Linux ARM , LKML Subject: Re: [PATCH v6 00/29] Warn on orphan section placement Message-ID: <202009011616.E6DC7D54EF@keescook> References: <20200821194310.3089815-1-keescook@chromium.org> <202008311240.9F94A39@keescook> <20200901071133.GA3577996@gmail.com> <20200901075937.GA3602433@gmail.com> <20200901081647.GB3602433@gmail.com> <202009010816.80F4692@keescook> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 01, 2020 at 11:02:02AM -0700, Nick Desaulniers wrote: > On Tue, Sep 1, 2020 at 8:17 AM Kees Cook wrote: > > > > On Tue, Sep 01, 2020 at 10:16:47AM +0200, Ingo Molnar wrote: > > > > This is with: > > > > > > > > GNU ld version 2.25-17.fc23 > > > > (At best, this is from 2015 ... but yes, min binutils in 2.23.) > > Ah, crap! Indeed arch/powerpc/Makefile wraps this in ld-option. Yeah, I totally missed that too. :) > Uh oh, the ppc vdso uses cc-ldoption which was removed! (I think by > me; let me send patches) How is that not an error? Yes, guilty, > officer. > commit 055efab3120b ("kbuild: drop support for cc-ldoption"). > Did I not know how to use grep, or? No, it is > commit f2af201002a8 ("powerpc/build: vdso linker warning for orphan sections") > that is wrong. Eek, yeah, the vdso needs fixing; whoops. Lucky for my series, I only need ld-option! ;) (Doing test builds now...) -- Kees Cook