From patchwork Wed Nov 15 20:30:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Leoshkevich X-Patchwork-Id: 165591 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b909:0:b0:403:3b70:6f57 with SMTP id t9csp2798309vqg; Wed, 15 Nov 2023 12:39:21 -0800 (PST) X-Google-Smtp-Source: AGHT+IGbPjG8P09j6AvdkXE6EgqcsREG/Vb4Z8yIa/gPfVeYRts6Tz/dbxHJAR0oIZ3buWS/aOGq X-Received: by 2002:a05:6a20:1601:b0:187:449d:a4cd with SMTP id l1-20020a056a20160100b00187449da4cdmr5854453pzj.27.1700080761396; Wed, 15 Nov 2023 12:39:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1700080761; cv=none; d=google.com; s=arc-20160816; b=ULjnFLJNihzmb1sXohJ3ncgsSS1cOQw6kuczALkmmR+8kU02C+MNW0o/GEJ6tNuPuR OE+IYNAZ6WGBpc2DUMYSGI4WKCmaCAAvOXWhrRqj2g6fjljVoaScV5MMKpox8CmrUKHO 6CHkrLd1JCPNoVtVDXbpgtxYkaZpyjRGKc6Qc7qRyvlohsCh4x5ENXFcn47PXm8hgTvG yER+/S7+bokCJlLCWF+y0kzpKg5RacGQaoG5etjirQycXLjNxtdHw6IOpsHQ/+iQjRl9 H/Lxl1br9sADOL1zlT+jxFnxShmInGEUTv7sdriDRt74g5KyeTaEi54sjYDtMGNhNqX3 362w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=6cPRly3Y0R+ewW/cAplLp4HHPc78tqbgSvA9QXIrbXE=; fh=Mk/+hh3KXEiY642GJit3QcoQ60j/OUZTCvigu+jTRuo=; b=CC70arkKsFplYQCC5XlrDdVImXq/F6k7FNzHMjw4zNX3sW+i1bCNYTtt1OvKPiKHz5 XfivdtV62plFuIIUJATP9GSH1UhC6jK5dCt1dKr0LIUjboqDd/4nf3u5sC/+gWYrFlYs MOcaeOMnAd2nQg7wqgoSjRq/15MHeVQN08m4zhdogkgHQMbgIRroERotstsN8ICTAIrK vV4qp2HStcsf5wK6PxeczfBnQZ81FqSPJW/17A3LV9gkZLl97hLicerwdbWhDRWk7dsa rtP0+v6JUrefm8IxA/mCs/T7UQGVHVsgC1u7XiK7thWY+ZvMzOQ8NIeFXLQD8eWXvKYz cQqA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=tM5UQApw; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:2 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=NONE dis=NONE) header.from=ibm.com Received: from agentk.vger.email (agentk.vger.email. [2620:137:e000::3:2]) by mx.google.com with ESMTPS id e13-20020a056a001a8d00b006c4f047a75asi11020735pfv.225.2023.11.15.12.39.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Nov 2023 12:39:21 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:2 as permitted sender) client-ip=2620:137:e000::3:2; Authentication-Results: mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=tM5UQApw; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:2 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=NONE dis=NONE) header.from=ibm.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by agentk.vger.email (Postfix) with ESMTP id 091538089A0B; Wed, 15 Nov 2023 12:39:19 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at agentk.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235756AbjKOUjD (ORCPT + 29 others); Wed, 15 Nov 2023 15:39:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235785AbjKOUir (ORCPT ); Wed, 15 Nov 2023 15:38:47 -0500 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6CF31FE0; Wed, 15 Nov 2023 12:35:09 -0800 (PST) Received: from pps.filterd (m0356516.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3AFKKJKW020415; Wed, 15 Nov 2023 20:34:55 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=6cPRly3Y0R+ewW/cAplLp4HHPc78tqbgSvA9QXIrbXE=; b=tM5UQApw2refpHW+H0do8RKQirmGTqP9fYnuojZ7XQm7M0IncvcAmhUe5V8UKDO1sK2f RIK1MrFM+Clr05LXq9XzM1QHKxDTXYWm+uHGeeXHQB1l7TfvlekNBb0mLIumSHIwuNIn shTRbnnZcJ33cGr7q7R7KeK5D3biE+VhiUghbSo6S39us/9OAz6BbFbRVYDz7PbDKRVX GDSbMjo9fR2XAk+53u7cW5KEzJd46z/BtL1al9Fi316cf+bhCnKJ8Wuwo4UVEUtKsovG QB14V3Li+kq0SSwHv+1evsflEHs1bstYubDzStqdxNjasvzqz/y+CD9emucah00Z5oAE FQ== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3ud4xc8cg2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Nov 2023 20:34:54 +0000 Received: from m0356516.ppops.net (m0356516.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3AFKOWKf032664; Wed, 15 Nov 2023 20:34:54 GMT Received: from ppma23.wdc07v.mail.ibm.com (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3ud4xc8cft-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Nov 2023 20:34:54 +0000 Received: from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1]) by ppma23.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 3AFKJ47T014688; Wed, 15 Nov 2023 20:34:53 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3uaneksvwk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Nov 2023 20:34:53 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 3AFKYo1122151934 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 15 Nov 2023 20:34:50 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F1E242004B; Wed, 15 Nov 2023 20:34:49 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A265920040; Wed, 15 Nov 2023 20:34:48 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.179.9.51]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 15 Nov 2023 20:34:48 +0000 (GMT) From: Ilya Leoshkevich To: Alexander Gordeev , Alexander Potapenko , Andrew Morton , Christoph Lameter , David Rientjes , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka Cc: Christian Borntraeger , Dmitry Vyukov , Hyeonggon Yoo <42.hyeyoo@gmail.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Mark Rutland , Roman Gushchin , Sven Schnelle , Ilya Leoshkevich Subject: [PATCH 24/32] s390/cpacf: Unpoison the results of cpacf_trng() Date: Wed, 15 Nov 2023 21:30:56 +0100 Message-ID: <20231115203401.2495875-25-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231115203401.2495875-1-iii@linux.ibm.com> References: <20231115203401.2495875-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 2hiXuR6P650rcR9fEXOk8WJoi9cn7Ipv X-Proofpoint-GUID: bdGq9jciuCrxPjpJhy4v0KBztKvLqzo8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-15_20,2023-11-15_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 phishscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 suspectscore=0 mlxlogscore=766 spamscore=0 priorityscore=1501 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311150163 X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Wed, 15 Nov 2023 12:39:19 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782663884750389769 X-GMAIL-MSGID: 1782663884750389769 Prevent KMSAN from complaining about buffers filled by cpacf_trng() being uninitialized. Tested-by: Alexander Gordeev Signed-off-by: Ilya Leoshkevich --- arch/s390/include/asm/cpacf.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h index b378e2b57ad8..a72b92770c4b 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -473,6 +473,8 @@ static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len, : [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair) : [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO) : "cc", "memory", "0"); + kmsan_unpoison_memory(ucbuf, ucbuf_len); + kmsan_unpoison_memory(cbuf, cbuf_len); } /**