From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 D2ED746D578; Fri, 28 Aug 2026 14:01:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787925673; cv=none; b=WjdfpsMysYsCdfOwULUlVHd+0cVEDcSYq94QjEnEF/zcyoqx62yYhj0kwfK5vELK1KWEPgrdzQtoMRb0fdKsWj4LUUOrgPhgRfgf8qTucNmgOh8BSENW0UAqOM+yXsXA539SiUTJX+Fos7/E2Kznu2pfLeghfuIk5S2xJm9SyCo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787925673; c=relaxed/simple; bh=C7Hhcg+WCX7x6g++PHHhdNtHD9wenpuZa0J1TNXlJOE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=dkW2r2lgHAI1vsOu63HXmYsbQdC6JcKReiz/rqFHvaFmc5Zrxw4FARy0Y0fLmSf1Alu2yBP1GagAu34hGxT1cPMuAq0GCoL1e5/7Al4vEYZLKtsetmVuS8V4NPoJz9O0uY1gamP9o/m9u+NmPvYYX4mkuB4T6BdWdh1xcu7vpEw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=oub9InCq; arc=none smtp.client-ip=148.163.156.1 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="oub9InCq" Received: from pps.filterd (m0356517.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 67SDVWur2133131; Fri, 28 Aug 2026 14:01:09 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:message-id:mime-version :subject:to; s=pp1; bh=lxKD2FeGoDVDWfvTfNnZ2K621ZoTuiERMxQSsLeHp Nc=; b=oub9InCqj1t92LrFPWXfdDNiNYpdXvF9oGK35WB31Z21OGdF3XCJTHU3+ 3bsF8JhVZnhVGM1iEjUw/Zc8U9KKzpXFdjY2kAxWxVKODSXnqAVSZ5eqqaGVwJg7 Rty2W6lcrGLUpR3ZPXa+KxizFienXc6t2P+p6mI6BmKmeD5gM3LY+NgIYb68D4pc nT32znxx+1TQfycNe1/liJiHOZqtITSUQeo917jLH3W6n5OPkttNYFoejxkODy7L sY0WyLZMFuvBoIgEh1onITgg1SVVxHqWb8lWilx3LnyD7tqYlhLQr/Z8e+ijEOMr 0BhvbwLEPtWCkJwbh81CFo8AklZEQ== Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4g73g5cpak-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 28 Aug 2026 14:01:04 +0000 (GMT) Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 67SDuGpi005550; Fri, 28 Aug 2026 14:01:03 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4g7rsyp89r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 28 Aug 2026 14:01:03 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 67SE10Ii43843994 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 28 Aug 2026 14:01:00 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1DA412004E; Fri, 28 Aug 2026 14:01:00 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C92C820043; Fri, 28 Aug 2026 14:00:59 +0000 (GMT) Received: from li-d2cd37cc-2ca3-11b2-a85c-84ed3706e5a0.ibm.com (unknown [9.111.26.147]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 28 Aug 2026 14:00:59 +0000 (GMT) From: Ilya Leoshkevich To: Heiko Carstens , Vasily Gorbik , Alexander Gordeev Cc: David Laight , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Ilya Leoshkevich Subject: [PATCH v3 0/2] s390: Warn if kernel command line contains non-printable EBCDIC Date: Fri, 28 Aug 2026 15:59:33 +0200 Message-ID: <20260828140057.1728173-1-iii@linux.ibm.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI4MDExNyBTYWx0ZWRfX5u6sQeuqQW8I uqkQEdDzcKjxhqg8DHoPPmKA4U2hJM6KGqdeAKzuL97k0DSKvSit7vT4bsOqS4+NgYOe4htcS1z jOIrk8pppQsx79Z2Ev1PNNCCDFbx/B2c9yYh5S2qHh4dnB1xWmvn9xo31+8Nf3pCQ76Cp7sDMKP nUQX/v47IPzhpDrFfh4+QgxF2WpeCwGejm9UImowbrYhUwO/Pivv5iNr4tR6YQJWGQk2WhDfhC0 ayMd7+oZU+OOY8MzvBxnPrzxbYYIjD8HTbI169Eb4GsO2Dsjmu6KkMbFkjbr//Ad2/UKZRnbPb8 2l889wVFZYiTcLXYTNasqybL7mBt37g8EhTNuyuntNDNAxChad31CDATOrtdRXH4CKTOkQeLuqf +jlDKRtHc3RFKwspNn0JnoQ92YwhSg== X-Authority-Analysis: v=2.4 cv=JZyMa0KV c=1 sm=1 tr=0 ts=6a9194a1 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=_2ywUkym6YunK0CUMMUA:9 X-Proofpoint-GUID: GIjjYS2ltIeknfH_15s61sWNWLW1UIqj X-Proofpoint-ORIG-GUID: qWXWXpM3dvVnE3HOKarbLu0pkfAZXHND X-Proofpoint-Spam-Info: AW1haW4tMjYwODI4MDExNyBTYWx0ZWRfX79ZLWWao2mbf smOu7WtOuq86DnOHHK1wR/k1CRrLh+bjOebrr1V6XEFQGbO2NbVBnoTo+ZiSMg3S/rCvLaJJHvV bIfQ89Bz0aHwCQ9zjS7O7d+7eweI4bk= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-28_04,2026-08-27_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608280117 v2: https://lore.kernel.org/all/20260826150702.949956-1-iii@linux.ibm.com/ v2 -> v3: Check whether source EBCDIC characters are printable (David, Heiko). v1: https://lore.kernel.org/all/20260825150840.537653-1-iii@linux.ibm.com/ v1 -> v2: Account for newlines (Heiko). Minor stylistic improvements: inline int i, bool return type, comment modality. Hi, This series adds a warning for unintentional EBCDIC -> ASCII kernel command line translations. Patch 1 adds EBCDIC character classes. Patch 2 uses them for determining whether the command line is printable. Best regards, Ilya Ilya Leoshkevich (2): s390/ebcdic: Add character classes for the invariant subset of EBCDIC s390: Warn if kernel command line contains non-printable EBCDIC characters arch/s390/boot/ipl_parm.c | 13 ++++++++++- arch/s390/include/asm/ebcdic.h | 5 +++++ arch/s390/kernel/ebcdic.c | 40 +++++++++++++++++++++++++++++++++- 3 files changed, 56 insertions(+), 2 deletions(-) -- 2.55.0