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 3AB9933A701; Tue, 16 Dec 2025 07:45:02 +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=1765871103; cv=none; b=cPb7ZZunYkplPYmkJ02Ib4s1kZdsXEAn2wTtlyW7twTsyWUDO5NOZXO/C20Qw8aiQwQrzyEwhVJjrpbH3QNO7MwXN7RDaXcjTQwYzSW69tfNMvbE9su25QADFiK9f3lQ0KJgCd6T1INhgHR3/JuokuYXHBaxNuQbHenx1b2/RBU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765871103; c=relaxed/simple; bh=wYxzWVbHlAsYeHK0+0jFgYjxvgSyTHgq6l6w12CPskc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=QMQksnRL9ROp1Qkkcg0zbtMkXTDq1VO1BYdYyVAaciejyq9doCbi9y1/92MuJ/8lY6EAbyF9QWtc77wTDYR7hbWAoxOe4QuMmLkWwNZKUMfAwGLEY5iZqX3p1feSj4PmcXhXX5wCMT2nMON26v/tZ8/NwumrGLxprlLVVoycHtY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jfOQoKXQ; 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="jfOQoKXQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3B593C4CEF1; Tue, 16 Dec 2025 07:45:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765871102; bh=wYxzWVbHlAsYeHK0+0jFgYjxvgSyTHgq6l6w12CPskc=; h=From:To:Cc:Subject:Date:From; b=jfOQoKXQr3kb3Os1voFDWTkGPHalCUaU6nkty/r+rCINdOSqDTWKSK771D6bTA9iG kMlbm/diP2his+vvDB1yYqBQIKLUDPmrZI/9qGCo+nWp3EtoByAGQ6x//msQn3X9Z7 zdc2ZrmkutGBAeH3gdgypG71lHZ2HNiEGgPYu0vTFEyki1MMLc99BbEK+30V3w/GPG fMBfgm8gLw4QfAAldrU5ucnt+m1eDJ2MXM3L/7FwK3QD3/Rer/qlWgz68LB3kJkqy3 1R4Pl70HwlB0Gh5Z3geVJ5MwixTsxU2zf1Lx7+bHA62e806A/3IYnOT73L7mOY/N0q oemzL6RanZxGQ== From: Jarkko Sakkinen To: linux-integrity@vger.kernel.org Cc: 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 v7 00/12] Streamline TPM2 HMAC sessions Date: Tue, 16 Dec 2025 09:44:41 +0200 Message-Id: <20251216074454.2192499-1-jarkko@kernel.org> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-integrity@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This patch set contains accumulated patches, which gradually improve TPM2 HMAC session management and TPM driver memory management. RNG test ======== I run this test both TPM1 and TPM2 chips using QEMU and swtpm: #!/bin/sh ctrl_c() { kill -15 $TEST_PID echo 0 > tracing_on echo nop > current_tracer echo > kprobe_events echo > set_ftrace_filter echo BYE exit } trap ctrl_c EXIT INT mount -t tracefs none /sys/kernel/tracing set -e cd /sys/kernel/tracing echo function > current_tracer echo p:tpm_get_random tpm_get_random > kprobe_events echo tpm_get_random > set_ftrace_filter echo 1 > tracing_on TEST_PID=$(cat /dev/hwrng > /dev/null &) echo > trace cat trace_pipe & sleep 10 Change Log ========== v7: - Updated cover letter to match better the current state of the patch set. v6: - OK, so I decided to send one more update with managed allocations moved to the tail so that it does not block reviewing more trivial patches. - Trimmed some of the patches and improved commit messages. v5: - I decided to add the managed allocation patch to this and take it from the master branch for the time being, as it needs more eyes despite having already one reviewed-by tag (especially tested-by tags). Jarkko Sakkinen (12): KEYS: trusted: Use get_random-fallback for TPM KEYS: trusted: Use get_random_bytes_wait() instead of tpm_get_random() tpm2-sessions: Define TPM2_NAME_MAX_SIZE KEYS: trusted: Open code tpm2_buf_append() KEYS: trusted: Remove dead branch from tpm2_unseal_cmd KEYS: trusted: Re-orchestrate tpm2_read_public() calls tpm2-sessions: Remove AUTH_MAX_NAMES tpm: Orchestrate TPM commands in tpm_get_random() tpm: Change tpm_get_random() opportunistic tpm-buf: Merge TPM_BUF_BOUNDARY_ERROR and TPM_BUF_OVERFLOW tpm-buf: Implement managed allocations tpm-buf: Remove tpm_buf_append_handle drivers/char/tpm/tpm-buf.c | 154 ++++----- drivers/char/tpm/tpm-interface.c | 145 ++++++++- drivers/char/tpm/tpm-sysfs.c | 23 +- drivers/char/tpm/tpm.h | 3 - drivers/char/tpm/tpm1-cmd.c | 198 ++++-------- drivers/char/tpm/tpm2-cmd.c | 371 +++++++--------------- drivers/char/tpm/tpm2-sessions.c | 272 ++++++---------- drivers/char/tpm/tpm2-space.c | 44 ++- drivers/char/tpm/tpm_vtpm_proxy.c | 30 +- include/linux/tpm.h | 77 +++-- security/keys/trusted-keys/trusted_tpm1.c | 70 ++-- security/keys/trusted-keys/trusted_tpm2.c | 329 ++++++++++--------- 12 files changed, 776 insertions(+), 940 deletions(-) -- 2.39.5