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Fri, 21 Aug 2020 13:02:01 -0700 (PDT) From: Arvind Sankar X-Google-Original-From: Arvind Sankar Date: Fri, 21 Aug 2020 16:01:59 -0400 To: Kees Cook Subject: Re: [PATCH v6 27/29] x86/boot/compressed: Remove, discard, or assert for unwanted sections Message-ID: <20200821200159.GC1475504@rani.riverdale.lan> References: <20200821194310.3089815-1-keescook@chromium.org> <20200821194310.3089815-28-keescook@chromium.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200821194310.3089815-28-keescook@chromium.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200821_160205_521661_5FF6906B X-CRM114-Status: GOOD ( 13.40 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Catalin Marinas , Masahiro Yamada , x86@kernel.org, Nick Desaulniers , Russell King , Ard Biesheuvel , clang-built-linux@googlegroups.com, Arvind Sankar , Ingo Molnar , James Morse , Nathan Chancellor , Borislav Petkov , Peter Collingbourne , Ingo Molnar , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Aug 21, 2020 at 12:43:08PM -0700, Kees Cook wrote: > In preparation for warning on orphan sections, stop the linker from > generating the .eh_frame* sections, discard unwanted non-zero-sized > generated sections, and enforce other expected-to-be-zero-sized sections > (since discarding them might hide problems with them suddenly gaining > unexpected entries). > > Signed-off-by: Kees Cook > .rel.dyn : { > - *(.rel.*) > + *(.rel.*) *(.rel_*) > } > ASSERT(SIZEOF(.rel.dyn) == 0, "Unexpected run-time relocations (.rel) detected!") > > .rela.dyn : { > - *(.rela.*) > + *(.rela.*) *(.rela_*) > } > ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!") > } > -- > 2.25.1 > When do you get .rela_? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel