From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45A7E2773EF; Tue, 23 Sep 2025 17:08:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758647324; cv=none; b=Ci5KiR42xD4kvNgSzk1RSHHsoubkc/uVwdnrAHTnMfBJ3fFlH1RWHbJ1i04mGBwnlDdEIu6S+UAk39axcMUCv2bzU2v3rmCfsmqxpCJptLk/16j2ulC/pAWQ06mSHGreQ+CiilyBwS9uxnsq4HJj7raGoYSFQa6xcW7j8hp7E4s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758647324; c=relaxed/simple; bh=xLARWBaT8G+i09gvi71ZwdreL3BTX6otN5oFqE7wWNQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=QDACZViPLPE8AedorqHg0ykFVrXpk5oK1yky0eOV/Few2dBLl3OIGtIltehbll5KXCCcQApC5AX3xVEshbkARq298Ifn88llBhpXf1vhlvr/KovZ6Zigs0j7CRRhqpAzprOm3FzSYLQHpQH7KAtU9/Ot6yta+zwZY2DG5VGcdis= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=T5OXlZvS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="T5OXlZvS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C7618C4CEF5; Tue, 23 Sep 2025 17:08:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758647324; bh=xLARWBaT8G+i09gvi71ZwdreL3BTX6otN5oFqE7wWNQ=; h=From:To:Cc:Subject:Date:From; b=T5OXlZvSVY/xEPCSoQ+QJE1hPnNuJxN1fduYKnarT7fjdXDzr60D/rjxx35Ytt2Z9 vUQ0VIcdjVMm+5M1ja+qBZYEGHnR1oPYeBTIFqYHCav0BDB2QJDmGPeg3++O3Ij9tv HPyW06Xg+3d6IdATIt9DohJa8XDACIxcBTjMXnWzmOXpTsoL7SOEoeOkkjH5xdvY9A llA0g09sLnXmltmdCV3vfvpcfHN7cRZwAz6QgQwbNayFdDGLAadyuaEnEsWaNEtFVa OFY3ILNW4ZEN0MmArtUj7ZwuxdHyQMFucPSoq/H2tra7rJmw7WzF58P4OBnrgdxIOp 5O98cdRRxLfcA== From: Jarkko Sakkinen To: linux-integrity@vger.kernel.org Cc: Stefano Garzarella , Jarkko Sakkinen , David Howells , Paul Moore , James Morris , "Serge E. Hallyn" , keyrings@vger.kernel.org (open list:KEYS/KEYRINGS), linux-security-module@vger.kernel.org (open list:SECURITY SUBSYSTEM), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v11 0/3] tpm: robust stack allocations Date: Tue, 23 Sep 2025 20:07:41 +0300 Message-Id: <20250923170744.1749132-1-jarkko@kernel.org> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 1. These are previous changes to tpm_buf, which make stack allocations much more feasible than previously. 2. Migrate low-hanging fruit to use stack allocations. 3. Re-orchestrate tpm_get_random(). Jarkko Sakkinen (3): tpm: Make TPM buffer allocations more robust tpm: Use TPM_MIN_BUF_SIZE in driver commands tpm orchestrate tpm_get_random() in the function drivers/char/tpm/tpm-buf.c | 139 +++++---- drivers/char/tpm/tpm-dev-common.c | 4 +- drivers/char/tpm/tpm-dev.h | 2 +- drivers/char/tpm/tpm-interface.c | 36 ++- drivers/char/tpm/tpm-sysfs.c | 20 +- drivers/char/tpm/tpm.h | 16 +- drivers/char/tpm/tpm1-cmd.c | 177 +++++------ drivers/char/tpm/tpm2-cmd.c | 349 +++++++++------------- drivers/char/tpm/tpm2-sessions.c | 127 ++++---- drivers/char/tpm/tpm2-space.c | 44 ++- drivers/char/tpm/tpm_tis_i2c.c | 4 +- drivers/char/tpm/tpm_vtpm_proxy.c | 34 +-- include/linux/tpm.h | 28 +- security/keys/trusted-keys/trusted_tpm1.c | 34 +-- security/keys/trusted-keys/trusted_tpm2.c | 156 +++++----- 15 files changed, 556 insertions(+), 614 deletions(-) -- 2.39.5