Message ID | 20240619154530.163232-33-iii@linux.ibm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show
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 6259215F3F0; Wed, 19 Jun 2024 15:46:18 +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=1718811981; cv=none; b=TmYhFDJ72/zlhnp5yiUTAIHMRR6vwpHRA1yex+SVuIuTJYTTvVTZaa2q+u/sdQoNOLn9meca5di2PzBL1fNttKvKHH7jg7xmE11fK4z+nV84gveTxOiUJkQFbg9kJgZrFZCN5k4LjCXukrMYX2l5iLb8mt0QN190AqPjACopHpA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718811981; c=relaxed/simple; bh=rxVyQ6lZU702PwA+PUfiD2YlhwM/n97a6/s5p7/Epck=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NwDv+veU/pBSaq6lziP/fR0PNA6PGeOVlLu84HtWXFz+eJ2P0IRWA3+VQH7jB0PyoLNVhFe0zfiQz9fQEX2RNkjlW/e0Jshwf9hvWkAuhqnGgYdTxFooSuRzB6sAiXz/6BaLpu5Dv7MZFIGgsbHr3wMkW0q+OS9NmKf+8jkzIHs= 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=DdY7fdaK; 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="DdY7fdaK" Received: from pps.filterd (m0353727.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45JFSdmn014351; Wed, 19 Jun 2024 15:45:52 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=aLe/3XBqno9Yk h6K8Gazkn5dKq5eSwzJESHfR5NZsd4=; b=DdY7fdaKNdwJqdDfmDqHhthc1ZLbz k3r/VZ6nxUdAm7/zSJ1pIm5AWYYsAta5Z6VDxHYgg67YkRVLsSpmdSPWyWsx7+uG iQB/XSLjQS9S5uOUSV9sOCvhfg5bIrg7+icjckKJSq2gnhvYd5nkFjmOBdMN6Pk3 HToM/mTScvoDECuiPhzEfMkdGSaQTVSg3OXoa++r8SVge8HwjTribgGGLfeVqrsD wgc1LLwy/AYXW4Xtehiu91RRGzEwj1/JG+OZ6qDwP+eSbpzfZsAIhACXZMrqB7pw jf8ePFvbuJnxAcU6sGTOoPihnNUrOu9zykvcH1JjOO3XN4wx2zdpJETTw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3yv20gg1gr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Jun 2024 15:45:52 +0000 (GMT) Received: from m0353727.ppops.net (m0353727.ppops.net [127.0.0.1]) by pps.reinject (8.18.0.8/8.18.0.8) with ESMTP id 45JFgsTe002902; Wed, 19 Jun 2024 15:45:51 GMT Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3yv20gg1gm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Jun 2024 15:45:51 +0000 (GMT) Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 45JFPGhi006210; Wed, 19 Jun 2024 15:45:50 GMT Received: from smtprelay05.fra02v.mail.ibm.com ([9.218.2.225]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 3ysn9ux8ne-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Jun 2024 15:45:50 +0000 Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay05.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 45JFjjTl46072230 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 19 Jun 2024 15:45:47 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F371420067; Wed, 19 Jun 2024 15:45:44 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A42EA2006E; Wed, 19 Jun 2024 15:45:44 +0000 (GMT) Received: from black.boeblingen.de.ibm.com (unknown [9.155.200.166]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 19 Jun 2024 15:45:44 +0000 (GMT) From: Ilya Leoshkevich <iii@linux.ibm.com> To: Alexander Gordeev <agordeev@linux.ibm.com>, Alexander Potapenko <glider@google.com>, Andrew Morton <akpm@linux-foundation.org>, Christoph Lameter <cl@linux.com>, David Rientjes <rientjes@google.com>, Heiko Carstens <hca@linux.ibm.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Marco Elver <elver@google.com>, Masami Hiramatsu <mhiramat@kernel.org>, Pekka Enberg <penberg@kernel.org>, Steven Rostedt <rostedt@goodmis.org>, Vasily Gorbik <gor@linux.ibm.com>, Vlastimil Babka <vbabka@suse.cz> Cc: Christian Borntraeger <borntraeger@linux.ibm.com>, Dmitry Vyukov <dvyukov@google.com>, 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 <mark.rutland@arm.com>, Roman Gushchin <roman.gushchin@linux.dev>, Sven Schnelle <svens@linux.ibm.com>, Ilya Leoshkevich <iii@linux.ibm.com> Subject: [PATCH v5 32/37] s390/traps: Unpoison the kernel_stack_overflow()'s pt_regs Date: Wed, 19 Jun 2024 17:44:07 +0200 Message-ID: <20240619154530.163232-33-iii@linux.ibm.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240619154530.163232-1-iii@linux.ibm.com> References: <20240619154530.163232-1-iii@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: <linux-trace-kernel.vger.kernel.org> List-Subscribe: <mailto:linux-trace-kernel+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-trace-kernel+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: v76OCW-rSK0e3OTzOrEaX6yNZpyNzUiP X-Proofpoint-GUID: 3PULXL9LrKrVhTrKFdx-3pRbX3v6Ygw_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-19_02,2024-06-19_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 impostorscore=0 bulkscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 phishscore=0 suspectscore=0 mlxlogscore=999 priorityscore=1501 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406190115 |
Series |
kmsan: Enable on s390
|
expand
|
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 52578b5cecbd..dde69d2a64f0 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -27,6 +27,7 @@ #include <linux/uaccess.h> #include <linux/cpu.h> #include <linux/entry-common.h> +#include <linux/kmsan.h> #include <asm/asm-extable.h> #include <asm/vtime.h> #include <asm/fpu.h> @@ -262,6 +263,11 @@ static void monitor_event_exception(struct pt_regs *regs) void kernel_stack_overflow(struct pt_regs *regs) { + /* + * Normally regs are unpoisoned by the generic entry code, but + * kernel_stack_overflow() is a rare case that is called bypassing it. + */ + kmsan_unpoison_entry_regs(regs); bust_spinlocks(1); printk("Kernel stack overflow.\n"); show_regs(regs);