From nobody Thu Nov 28 20:04:57 2024 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (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 D92C2171E76; Fri, 27 Sep 2024 18:46:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727462814; cv=none; b=Dxo4rT4rEKRNr0Y2YagR4C4CdKGtIm8WFl/a21VhaK9MaDwutEIZmJ5wboGyrbCXQqIzes0B3bnwAAO2vepXTQ0z8Tg3iQfAvYw0hMBQXTjXWx8bI2dKCSv+/BAJ0Okn5HgChljHM66WUXcMjYPmdv/Ms/oU/an+aCON6atKKrE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727462814; c=relaxed/simple; bh=IhHEjvPxQf+RDdoLilNZ8Cw+tcPLXWdx9ZxWbieFqVk=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=I/1oucWJbU8r8lyHIQ26GZdcO/6YEXeItWuNz/pZ96aGbGqQOZeZZrqMebW4BacnHwOxS4ibYKm2SSRkVSg38DLrIJCEJzRrJg4RG74Bz/80tiYpxgDPn+xc93uTNTFxMvvzoQIivpyNnGKQAX7/NTlnfwOXen66A8AiYopF3Ps= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=nqshLzfE; arc=none smtp.client-ip=198.175.65.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nqshLzfE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1727462814; x=1758998814; h=message-id:date:mime-version:subject:from:to:cc: references:in-reply-to:content-transfer-encoding; bh=IhHEjvPxQf+RDdoLilNZ8Cw+tcPLXWdx9ZxWbieFqVk=; b=nqshLzfET3C4N46etxJWFjMp6xcf+OnofdeKIFFM7HpsypMjo5ISyspK QH0L5gBtxRcLYUhlTDthkZpBE8B6z4U3KVL/RgujwqQt5clknlyGevCyA yY4Fv+WHXT+rlysKSehV+sJdznZhC4DdaRvz1ANjT4MC/VYh/+Lue64E8 19BwBIzo5RlxMMQw+ebZb75viAIZHecfLHI4MDA/HBbSj59SNYAjBoOBy 1shFBcuaG3djngpp+OLEEsZp6WJ7do6WbkiXn/Rx/XCZTf+42qPsWVoPJ wu40H79GEyzpqvGINvxawiIRrWutpjPNKUYgDGTNkRgHTiDziPMhQDa1o A==; X-CSE-ConnectionGUID: f89ML4c6SESfmbRN0M2fVg== X-CSE-MsgGUID: CwFZQ657TY2yuPC6/bMIaw== X-IronPort-AV: E=McAfee;i="6700,10204,11208"; a="26421548" X-IronPort-AV: E=Sophos;i="6.11,159,1725346800"; d="scan'208";a="26421548" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 11:46:53 -0700 X-CSE-ConnectionGUID: L2qlIXE1SXGpMWrouFPlAA== X-CSE-MsgGUID: rnDkqNmqSH+VAtus7/xSFg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,159,1725346800"; d="scan'208";a="103396006" Received: from tzanussi-mobl4.amr.corp.intel.com (HELO [10.246.129.181]) ([10.246.129.181]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 11:46:51 -0700 Message-ID: <91e2a30c-d00b-4648-8b48-24467dca17dc@linux.intel.com> Date: Fri, 27 Sep 2024 13:46:49 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH 1/2] crypto: iaa - Remove potential infinite loop in check_completion() Content-Language: en-GB From: "Zanussi, Tom" To: herbert@gondor.apana.org.au Cc: davem@davemloft.net, linux-crypto@vger.kernel.org, linux-kernel , "Accardi, Kristen C" , zanussi@kernel.org References: <733a19ce-16f2-4d06-bce9-85d7473c9a4d@linux.intel.com> In-Reply-To: <733a19ce-16f2-4d06-bce9-85d7473c9a4d@linux.intel.com> Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For iaa_crypto operations, it's assumed that if an operation doesn't make progress, the IAA watchdog timer will kick in and set the completion status bit to failure and the reason to completion timeout. Some systems may have broken hardware that doesn't even do that, which can result in an infinite status-checking loop. Add a check for that in the loop, and disable the driver if it occurs. Signed-off-by: Tom Zanussi --- drivers/crypto/intel/iaa/iaa_crypto_main.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/crypto/intel/iaa/iaa_crypto_main.c b/drivers/crypto/in= tel/iaa/iaa_crypto_main.c index 237f87000070..8fced88d3d06 100644 --- a/drivers/crypto/intel/iaa/iaa_crypto_main.c +++ b/drivers/crypto/intel/iaa/iaa_crypto_main.c @@ -945,12 +945,22 @@ static inline int check_completion(struct device *dev, bool only_once) { char *op_str =3D compress ? "compress" : "decompress"; + int status_checks =3D 0; int ret =3D 0; =20 while (!comp->status) { if (only_once) return -EAGAIN; cpu_relax(); + if (status_checks++ >=3D IAA_COMPLETION_TIMEOUT) { + /* Something is wrong with the hw, disable it. */ + dev_err(dev, "%s completion timed out - " + "assuming broken hw, iaa_crypto now DISABLED\n", + op_str); + iaa_crypto_enabled =3D false; + ret =3D -ETIMEDOUT; + goto out; + } } =20 if (comp->status !=3D IAX_COMP_SUCCESS) { --=20 2.38.1 From nobody Thu Nov 28 20:04:57 2024 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 6C8BF1C230D; Fri, 27 Sep 2024 18:49:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727462958; cv=none; b=WvLbhkOx8IVW46GBiMOe+FwxZsW8NEJJi44oDsIl0SNCdK1Yvqgm9i1kycPSnxApTvO6PWt82nOgrrxJsokzq953iqU7F2BaOwoudghb/RBNQtKfM2woCgwWfySz1aEjvqNP750jFH2PitTQSB+RffXONi3LmMxEk6CelsYfYX8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727462958; c=relaxed/simple; bh=y/7cSwxsNP5gG8rsS+LqL1ZWq68q/juRgwY4ok3wZVs=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=uMeN7nPgKykN8CQ2+ooXh6C6n2CGignYnEszUTOTJ8RH4Fyr1G3nvfOQMOw5FQ2WP3dg4xDPJqGypnt+ii+b3XwjrJTUIt7v9tNg/C4psIIYq9DKnGQGCO1zsWPdVCc9kIYShc5/01mvWzLCWzHItxokSNfH04JEPERElfmic7c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Cez9ZeDw; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Cez9ZeDw" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1727462956; x=1758998956; h=message-id:date:mime-version:subject:from:to:cc: references:in-reply-to:content-transfer-encoding; bh=y/7cSwxsNP5gG8rsS+LqL1ZWq68q/juRgwY4ok3wZVs=; b=Cez9ZeDwQr15mfwmS7ub3wtt2itI9gNYzxsSAE5YN9vurfd4oQw9L5QX DdpWNTK+pL7UUu6+JblcP/gZxsf2tWfhukcTFNZnAPcgIt4a7jAonACjH 5CR8Cts7dkyzH1yZSno6zL+csSK4SIgFOE2LeuqHG3fgaYkReCj5cMyHz VEznh7j3XdXa4TflxdXoGyWpTEvlus9kWaKAT//ZiZGZ5Lqh+QuPe2E5C QdpkxAI3vgxNIinyL2S02JrLeqaVI0Q0C8kJaESs1Ad1yU8xOQr8/IUHe idcr7HSd3fz4nQDaH6AbDkMjpSoASp6MHyfHKOuUAkm7SfBq4ijAgws7b g==; X-CSE-ConnectionGUID: AZ85WXwtRQG0DeZ45EdovA== X-CSE-MsgGUID: mhqtoshnR/OF84taf+84GA== X-IronPort-AV: E=McAfee;i="6700,10204,11208"; a="49144479" X-IronPort-AV: E=Sophos;i="6.11,159,1725346800"; d="scan'208";a="49144479" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 11:47:58 -0700 X-CSE-ConnectionGUID: 7Q1/PQMATFOXD5E9wYaQ0g== X-CSE-MsgGUID: fXhCSlRqRn+GPhKo/AlG3Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,159,1725346800"; d="scan'208";a="103427647" Received: from tzanussi-mobl4.amr.corp.intel.com (HELO [10.246.129.181]) ([10.246.129.181]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 11:47:56 -0700 Message-ID: <9afce713-db32-487b-b79e-3b294500d8d4@linux.intel.com> Date: Fri, 27 Sep 2024 13:47:55 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH 2/2] MAINTAINERS: Make Kristen Accardi the IAA crypto driver maintainer Content-Language: en-GB From: "Zanussi, Tom" To: herbert@gondor.apana.org.au Cc: davem@davemloft.net, linux-crypto@vger.kernel.org, linux-kernel , "Accardi, Kristen C" , zanussi@kernel.org References: <733a19ce-16f2-4d06-bce9-85d7473c9a4d@linux.intel.com> In-Reply-To: <733a19ce-16f2-4d06-bce9-85d7473c9a4d@linux.intel.com> Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Since I'll be retiring from Intel and will no longer have access to hardware, Kristen Accardi will be taking over as the iaa_crypto maintainer. Signed-off-by: Tom Zanussi --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index a0b4c1210e92..b89c21ff2bc8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11300,7 +11300,7 @@ Q: https://patchwork.kernel.org/project/linux-dmaen= gine/list/ F: drivers/dma/ioat* =20 INTEL IAA CRYPTO DRIVER -M: Tom Zanussi +M: Kristen Accardi L: linux-crypto@vger.kernel.org S: Supported F: Documentation/driver-api/crypto/iaa/iaa-crypto.rst --=20 2.38.1