From patchwork Wed Apr 21 22:42:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Bottomley X-Patchwork-Id: 12217133 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D16B9C433ED for ; Wed, 21 Apr 2021 22:42:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9CB68613C7 for ; Wed, 21 Apr 2021 22:42:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238067AbhDUWnY (ORCPT ); Wed, 21 Apr 2021 18:43:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229706AbhDUWnY (ORCPT ); Wed, 21 Apr 2021 18:43:24 -0400 Received: from bedivere.hansenpartnership.com (bedivere.hansenpartnership.com [IPv6:2607:fcd0:100:8a00::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C03B6C06174A; Wed, 21 Apr 2021 15:42:50 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by bedivere.hansenpartnership.com (Postfix) with ESMTP id BA59B128014A; Wed, 21 Apr 2021 15:42:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1619044968; bh=LXNWijd3Tbtc5YeYLverXSaOp867ZvVgPJ3g/XXTL8o=; h=Message-ID:Subject:From:To:Date:From; b=c09zmdozt/wPqUQxqah1tdxrThSwrEkbKg8/NdhxMKD64fAZJGuONbHXVvMJBimZN CtnKxGr3euH8eF+aC4ribE0MVEHi3rEFt3KnhJduOueyYjXuiDkcus2A1QF+tKWs9L ze+yW+KcmWmeVlhNTXSFGRrjEqdPsRplAoSttoLY= Received: from bedivere.hansenpartnership.com ([127.0.0.1]) by localhost (bedivere.hansenpartnership.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ovvH6J0W4cSP; Wed, 21 Apr 2021 15:42:48 -0700 (PDT) Received: from jarvis.int.hansenpartnership.com (unknown [IPv6:2601:600:8280:66d1::527]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bedivere.hansenpartnership.com (Postfix) with ESMTPSA id 5AFCA1280129; Wed, 21 Apr 2021 15:42:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1619044968; bh=LXNWijd3Tbtc5YeYLverXSaOp867ZvVgPJ3g/XXTL8o=; h=Message-ID:Subject:From:To:Date:From; b=c09zmdozt/wPqUQxqah1tdxrThSwrEkbKg8/NdhxMKD64fAZJGuONbHXVvMJBimZN CtnKxGr3euH8eF+aC4ribE0MVEHi3rEFt3KnhJduOueyYjXuiDkcus2A1QF+tKWs9L ze+yW+KcmWmeVlhNTXSFGRrjEqdPsRplAoSttoLY= Message-ID: <30acbe05a0569bd3b3a9f968c4863e1f42b6d320.camel@HansenPartnership.com> Subject: [PATCH] KEYS: trusted: Fix TPM reservation for seal/unseal From: James Bottomley To: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org Cc: jarkko@kernel.org, Mimi Zohar Date: Wed, 21 Apr 2021 15:42:47 -0700 User-Agent: Evolution 3.34.4 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org The original patch 8c657a0590de ("KEYS: trusted: Reserve TPM for seal and unseal operations") was correct on the mailing list: https://lore.kernel.org/linux-integrity/20210128235621.127925-4-jarkko@kernel.org/ But somehow got rebased so that the tpm_try_get_ops() in tpm2_seal_trusted() got lost. This causes an imbalanced put of the TPM ops and causes oopses on TIS based hardware. This fix puts back the lost tpm_try_get_ops() Fixes: 8c657a0590de ("KEYS: trusted: Reserve TPM for seal and unseal operations") Reported-by: Mimi Zohar Signed-off-by: James Bottomley Acked-by: Mimi Zohar --- security/keys/trusted-keys/trusted_tpm2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/keys/trusted-keys/trusted_tpm2.c b/security/keys/trusted-keys/trusted_tpm2.c index d225ad140960..617fabd4d913 100644 --- a/security/keys/trusted-keys/trusted_tpm2.c +++ b/security/keys/trusted-keys/trusted_tpm2.c @@ -248,7 +248,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip, if (!options->keyhandle) return -EINVAL; - rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_CREATE); + rc = tpm_try_get_ops(chip); if (rc) return rc;