From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0316C072A2 for ; Wed, 15 Nov 2023 20:35:22 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id AE32380041; Wed, 15 Nov 2023 15:35:10 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id A6CDB8003F; Wed, 15 Nov 2023 15:35:10 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8980880041; Wed, 15 Nov 2023 15:35:10 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 6E0788003F for ; Wed, 15 Nov 2023 15:35:10 -0500 (EST) Received: from smtpin30.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 4681AA097E for ; Wed, 15 Nov 2023 20:35:10 +0000 (UTC) X-FDA: 81461343180.30.6FCC570 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by imf04.hostedemail.com (Postfix) with ESMTP id 13C2940011 for ; Wed, 15 Nov 2023 20:35:07 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=fX7J+qpY; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf04.hostedemail.com: domain of iii@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=iii@linux.ibm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1700080508; a=rsa-sha256; cv=none; b=xVDBfH2gPNXP3pzLRBsbeXXsTLZrzdo5zvtTSVVLbzE3P8Ho7ZzIBgQXQjeh+1Z6p3r5x8 /zr35sJQs/kaxyhgHBS9lxPi2dI5VE8H+cWuWIKSlg0WLx8dX/fnLNK7rx5iz1QNcSyph/ +XUbNQSLmegtRIVkR+K6L7YEH26RRG0= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=fX7J+qpY; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf04.hostedemail.com: domain of iii@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=iii@linux.ibm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1700080508; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=vyPRs3NEGlrSEI4OyP/kyugJK7kmBP/avTMvzRTf3tE=; b=cPLIbUfHC83xk4D6Tdva9DRlqLpNDcUvZ92JO6XWDBU8H6QHXUmtvWrmhE6DmyOYRUwhQu 4804rC36txPjVcXnMZPB83FRZGd8NHkZ8JKyHhA35ovKcWzgwIjDO4aQnyBLbxVaY4XbVf 1gtz8acDEcAv8l1s79HRPUymEDjXOYA= Received: from pps.filterd (m0353723.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3AFKFbGw004184; Wed, 15 Nov 2023 20:35:01 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=vyPRs3NEGlrSEI4OyP/kyugJK7kmBP/avTMvzRTf3tE=; b=fX7J+qpYXrsKl0WhCw3SJovIUB8N1Lwj01ujK3viO6O7XZNCFJw0WQ8XfQHzERI33W// j+jUpWNZJKyl+I31c35IJ0yr5UFwG5RsUEAM+E/L8Owhv0s6xavhXhlKW6hxNoW1XDcC u719TVJzYC/LZSNOKorAUUxjzEy/F3Q9uiUG07EDpSEmy8/z/Rf60uv/QY+12KeIhiWq wUSo7MK44DbEJhCuF4GyVtUjkDCcR44drPNwM8tTeJGuokSn8vPowbZyY0QB6l7oOBBW vEVlgEdIPd+FGz6rF78YLaeaA9GlV6cnddAfH70PAM8FhjzF8nJhfR8NX7ovbteHbX6v 2A== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3ud4v30d0f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Nov 2023 20:35:01 +0000 Received: from m0353723.ppops.net (m0353723.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3AFKQNNg002471; Wed, 15 Nov 2023 20:35:00 GMT Received: from ppma22.wdc07v.mail.ibm.com (5c.69.3da9.ip4.static.sl-reverse.com [169.61.105.92]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3ud4v30cyy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Nov 2023 20:35:00 +0000 Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 3AFKJ1Fm017525; Wed, 15 Nov 2023 20:34:59 GMT Received: from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3uamayj7es-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Nov 2023 20:34:59 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 3AFKYucL4391432 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 15 Nov 2023 20:34:56 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A6F6520043; Wed, 15 Nov 2023 20:34:56 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 59DB820040; Wed, 15 Nov 2023 20:34:55 +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 20:34:55 +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 28/32] s390/traps: Unpoison the kernel_stack_overflow()'s pt_regs Date: Wed, 15 Nov 2023 21:31:00 +0100 Message-ID: <20231115203401.2495875-29-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 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: dnaNBt7krqikwNotd3HVlCqxFq8337Jy X-Proofpoint-ORIG-GUID: 6zt5GNmg5wfDE8GufZyKD9mMXoFyxLx- 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 lowpriorityscore=0 spamscore=0 priorityscore=1501 bulkscore=0 phishscore=0 clxscore=1015 malwarescore=0 mlxscore=0 adultscore=0 impostorscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311150163 X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 13C2940011 X-Stat-Signature: zcxrmjze3nmo9fzmzhwrp7whppamkz47 X-HE-Tag: 1700080507-434812 X-HE-Meta: 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 Hv9Vqrs7 /r2LJM5WUl3agJKkFdE0aWgRMvpitqe122WQ/HwolrJOx9T7SiI3fEXvDTrw25Mbp4Jv/7GnEEzI1cYOqcE97gIay/ZTcVxAxFyyDoj/dnCWnB+ryYmikEpzxjbm5MGhQA1XPP/q2auShczXyAcrItpk+6dpzZ0Vkq3rtZ9+SI8BTsJvV604O7Whu2cTypqESqcrbtnFuDfswju9hy3qtDhBrWY1N+/ZafD/LGwRjS03jDYjqZuVXv8+9TXM85XhYg+eAuQw9F/lG2+xsHkCvWabQ8V8l4oNScoypdvv64QUaf3DISZffocRzFYK/JGW/anaLnSfEaN45GXw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This is normally done by the generic entry code, but the kernel_stack_overflow() flow bypasses it. Signed-off-by: Ilya Leoshkevich --- arch/s390/kernel/traps.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 1d2aa448d103..dd7362806dbb 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -260,6 +261,7 @@ static void monitor_event_exception(struct pt_regs *regs) void kernel_stack_overflow(struct pt_regs *regs) { + kmsan_unpoison_entry_regs(regs); bust_spinlocks(1); printk("Kernel stack overflow.\n"); show_regs(regs); -- 2.41.0