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 77CC8157487; Tue, 20 May 2025 14:00:47 +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=1747749648; cv=none; b=L4LzSsDDblOtNdb6CHkiP+hh1WtFgfucRaXEwNcyauAcYJjn+rjF+GAOWepcEtMs7UYc96bswMcZ4zHGOA7ohE0K2CRq4UZCrUCeMkm9uy7bsft2u3cMZ3sU9DlDoBKRrLvgfj4ViOyd1t7CrNwenQ4s6PG7cfLpw4/pgRt1W4w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747749648; c=relaxed/simple; bh=GoMo8gKPe2oKNB/3+FDXvGExehYT8y/zSx5te5lkdpk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OZuLkycjHO8Uvk7m9LcZMlpUSyiJ3NLptwkzuNmPtrmI/ulO/rnGsqoq5a7f9qectMDo3kX353p2eJYGLu+gevpt3YiNjC+Qt8QcNI2Y0vT2R6TfhxfTPmg54d/MDiBffk+ny2uvDKKaE4tmHlpWHtkHdFLOA5UhgON8pnxs0eM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=xF8mKksK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="xF8mKksK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BB9BC4CEE9; Tue, 20 May 2025 14:00:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1747749647; bh=GoMo8gKPe2oKNB/3+FDXvGExehYT8y/zSx5te5lkdpk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xF8mKksKXa0LZ9aH22VOtMditmBleLMLTMAMimmWljsQtegVktp96Vg+d1JoW0C8c xwDx1YGEDOtfb0Fq2tVXfuesRsEGNAWXjpkk2U1VXU49uiYrTgt7dfrqLK9pjw6phn JeOtM3l3l5n5luE6+BKSJB/22Am9K51w0w5zTwTY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Michal Suchanek , Jarkko Sakkinen , Sasha Levin Subject: [PATCH 6.6 014/117] tpm: tis: Double the timeout B to 4s Date: Tue, 20 May 2025 15:49:39 +0200 Message-ID: <20250520125804.549697055@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250520125803.981048184@linuxfoundation.org> References: <20250520125803.981048184@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michal Suchanek [ Upstream commit 2f661f71fda1fc0c42b7746ca5b7da529eb6b5be ] With some Infineon chips the timeouts in tpm_tis_send_data (both B and C) can reach up to about 2250 ms. Timeout C is retried since commit de9e33df7762 ("tpm, tpm_tis: Workaround failed command reception on Infineon devices") Timeout B still needs to be extended. The problem is most commonly encountered with context related operation such as load context/save context. These are issued directly by the kernel, and there is no retry logic for them. When a filesystem is set up to use the TPM for unlocking the boot fails, and restarting the userspace service is ineffective. This is likely because ignoring a load context/save context result puts the real TPM state and the TPM state expected by the kernel out of sync. Chips known to be affected: tpm_tis IFX1522:00: 2.0 TPM (device-id 0x1D, rev-id 54) Description: SLB9672 Firmware Revision: 15.22 tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 22) Firmware Revision: 7.83 tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1A, rev-id 16) Firmware Revision: 5.63 Link: https://lore.kernel.org/linux-integrity/Z5pI07m0Muapyu9w@kitsune.suse.cz/ Signed-off-by: Michal Suchanek Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Sasha Levin --- drivers/char/tpm/tpm_tis_core.h | 2 +- include/linux/tpm.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/tpm/tpm_tis_core.h b/drivers/char/tpm/tpm_tis_core.h index 369496a6aebf1..27e61ddfb6229 100644 --- a/drivers/char/tpm/tpm_tis_core.h +++ b/drivers/char/tpm/tpm_tis_core.h @@ -54,7 +54,7 @@ enum tis_int_flags { enum tis_defaults { TIS_MEM_LEN = 0x5000, TIS_SHORT_TIMEOUT = 750, /* ms */ - TIS_LONG_TIMEOUT = 2000, /* 2 sec */ + TIS_LONG_TIMEOUT = 4000, /* 4 secs */ TIS_TIMEOUT_MIN_ATML = 14700, /* usecs */ TIS_TIMEOUT_MAX_ATML = 15000, /* usecs */ }; diff --git a/include/linux/tpm.h b/include/linux/tpm.h index 5f4998626a988..bf8a4ec8a01c1 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -181,7 +181,7 @@ enum tpm2_const { enum tpm2_timeouts { TPM2_TIMEOUT_A = 750, - TPM2_TIMEOUT_B = 2000, + TPM2_TIMEOUT_B = 4000, TPM2_TIMEOUT_C = 200, TPM2_TIMEOUT_D = 30, TPM2_DURATION_SHORT = 20, -- 2.39.5