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AJvYcCVcmccMQzOSGSeoxhdoI3DRRHoraPi2G7Ca7vxKwgCb5s8ooQcTppPrwXOZMNg6P3d3n/IXSZ8t/cr5Lf9rFR/g5mLrT9i2JukkQYhe X-Gm-Message-State: AOJu0Yyl+jWHMwu8BMnC7QXwLDqiEoF74iJJVKm5kajqETVsf2cGRQIO QUGhjM/n3Ducy7AOefSyxk6bf7AlsSPQq93R+cQmToI5aF+VePZ3FhW2BKmrow== X-Received: by 2002:a17:902:a388:b0:1dd:b3ef:4528 with SMTP id x8-20020a170902a38800b001ddb3ef4528mr748393pla.52.1711662975100; Thu, 28 Mar 2024 14:56:15 -0700 (PDT) Received: from www.outflux.net ([198.0.35.241]) by smtp.gmail.com with ESMTPSA id w22-20020a1709026f1600b001e0b5f9fb02sm2156087plk.26.2024.03.28.14.56.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Mar 2024 14:56:14 -0700 (PDT) From: Kees Cook To: linux-hardening@vger.kernel.org, Ard Biesheuvel Cc: Kees Cook , x86@kernel.org, linux-kernel@vger.kernel.org, kevinloughlin@google.com, thomas.lendacky@amd.com, Ard Biesheuvel , kernel test robot Subject: Re: [PATCH] gcc-plugins/stackleak: Avoid .head.text section Date: Thu, 28 Mar 2024 14:56:10 -0700 Message-Id: <171166296859.3578759.529846502989874977.b4-ty@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240328064256.2358634-2-ardb+git@google.com> References: <20240328064256.2358634-2-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit On Thu, 28 Mar 2024 07:42:57 +0100, Ard Biesheuvel wrote: > The .head.text section carries the startup code that runs with the MMU > off or with a translation of memory that deviates from the ordinary one. > So avoid instrumentation with the stackleak plugin, which already avoids > .init.text and .noinstr.text entirely. > > Applied to for-next/hardening, thanks! [1/1] gcc-plugins/stackleak: Avoid .head.text section https://git.kernel.org/kees/c/4ac9a796ada0 Take care, -- Kees Cook