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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3B96FCD5BAC for ; Thu, 21 May 2026 14:26:22 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DCAC76B0093; Thu, 21 May 2026 10:26:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D7AE16B0095; Thu, 21 May 2026 10:26:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C1C206B0096; Thu, 21 May 2026 10:26:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id AE1116B0093 for ; Thu, 21 May 2026 10:26:16 -0400 (EDT) Received: from smtpin04.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 71531A05FB for ; Thu, 21 May 2026 14:26:16 +0000 (UTC) X-FDA: 84791651952.04.7EC5187 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by imf08.hostedemail.com (Postfix) with ESMTP id 30AFF16000B for ; Thu, 21 May 2026 14:26:14 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=KXiwd8eI; spf=pass (imf08.hostedemail.com: domain of jremus@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=jremus@linux.ibm.com; dmarc=pass (policy=none) header.from=ibm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1779373574; 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=Jllwd3IYu88g5M0bXd8eQQThFlgyU/4CLxomaWScev4=; b=jEbcg2zMlTTCL58MCBtbVmc4YVMOnMaxv6DqN3PE5gfOdQ4mYN/WJvhLR5Z8RCR2P1hiS6 T8SEM2LjTcACMnN0+NnnNPf0qDCyJXl8T8Fz7+5lHvXjbYWguJ8dWKgaEQecZ26IQktaos NYDnp4CEJSz/8+3VKFDzn4MFY+4VYQ4= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=KXiwd8eI; spf=pass (imf08.hostedemail.com: domain of jremus@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=jremus@linux.ibm.com; dmarc=pass (policy=none) header.from=ibm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1779373574; a=rsa-sha256; cv=none; b=xmcZbRxRlry/FlKxG8SDPRPhW1ztATHjHf3sVXaeug6T4tEm4a7JuKLhLAjOfcMToLGu4D PabmsRSuELdpq3HszY0/I3rLjuW64KSwfy8SeUIT9WDjHPnT59UQCon5vGxfHyLkPOiF/W 79ijQLDFZgTA2r/S/iO5yfWw6NZV3oY= Received: from pps.filterd (m0356516.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 64L3Sedp3907161; Thu, 21 May 2026 14:25:58 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=Jllwd3IYu88g5M0bX d8eQQThFlgyU/4CLxomaWScev4=; b=KXiwd8eIpi+PCPdzIKhYx1dhvbjNizdNs j2PtIbsXFMXpibMHMcXUcodPo4AwZ6hH7mg4UIZDjjBqNmIhZVlb+jAwgdoHLAlx nHHw15HDLkGzRs+s79+oA3+c8lyGr9mdiWKjRCG/Uy01N5kjcFr2ve3QwXk3ShLu jNllobYArrhrkv3dMDQUuWptZmxqtcEuiqPKxYAbmeIBYh05OXXazEJWLqz0th+o Iw9C/QofyE5oI7bkBMicamLYunfDtxmFOqj1/RBMMcCdyjRfHmfGLuIippOlGocJ kkHgNQGX3S1yQ3NfvneHdurDgzdnWx51vpCrxckA0uwoZESlKMcTg== 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 4e6hb8p5ry-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 May 2026 14:25:57 +0000 (GMT) Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 64LEODcN027545; Thu, 21 May 2026 14:25:56 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4e739w4pey-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 May 2026 14:25:56 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 64LEPrrM57278946 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 21 May 2026 14:25:53 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 18FF120049; Thu, 21 May 2026 14:25:53 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B586120040; Thu, 21 May 2026 14:25:52 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 21 May 2026 14:25:52 +0000 (GMT) From: Jens Remus To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, Steven Rostedt , Josh Poimboeuf , Indu Bhagat , Peter Zijlstra , Dylan Hatch , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Mathieu Desnoyers , Kees Cook , Sam James Cc: Jens Remus , bpf@vger.kernel.org, linux-mm@kvack.org, Namhyung Kim , Andrii Nakryiko , "Jose E. Marchesi" , Beau Belgrave , Florian Weimer , "Carlos O'Donell" , Masami Hiramatsu , Jiri Olsa , Arnaldo Carvalho de Melo , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Heiko Carstens , Vasily Gorbik , Ilya Leoshkevich , "Steven Rostedt (Google)" Subject: [PATCH v16 10/20] unwind_user/sframe: Remove .sframe section on detected corruption Date: Thu, 21 May 2026 16:25:36 +0200 Message-ID: <20260521142546.3908498-11-jremus@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260521142546.3908498-1-jremus@linux.ibm.com> References: <20260521142546.3908498-1-jremus@linux.ibm.com> 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: AW1haW4tMjYwNTIxMDE0MiBTYWx0ZWRfX5Cb9SNjh14zV CLa3w/v/zIcsC358NYpHV7oe41D+S35qEgs/fiIYo7k3IxWQQD3j+Nb56SExE/70gCmw6AIRrvK sBXLd3/Oup55nFRYOQ5rz9fEfCCds3b1+NSk6UXvwuPy/t5KO1qan2jOYXpc5yaBzxWBF7jmbl2 rit11+e4j8jSDSZAl5vVnldt5Q9yX5FvWZV+RW1vtQy5i72HrCtzlaf9XP1ESoKqbLUdWgq4r9g u/d7fPKXnGzDF+Ql3IgLdWCM1nD+qqMCCBTEkRrdOOHYQOeC1j/x/KQMjpRms2lWhKUVycAquqp 53XF2HZ3mtlMViozEINL9rG2nEuCrJt9OhZpC27FAsoqi8wUCyU9mkgGEl0kiwmHPUwvyZAz2m+ FPH1KwpW2IT2pOXJ/fXnkwC0Vy+uJtw2Z8AeTBWVCa+xRIjl7tV9ouqET1wLYvVIvMlUiVoREi+ zXY88qfywmdsoq07W5A== X-Proofpoint-GUID: Fx4VTBMqCayqEJuwq0j-4rAKT7n5LpoY X-Proofpoint-ORIG-GUID: Q54U5td7LPxOfnBGczdYla305bi7dNFy X-Authority-Analysis: v=2.4 cv=aYBRWxot c=1 sm=1 tr=0 ts=6a0f15f6 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VwQbUJbxAAAA:8 a=meVymXHHAAAA:8 a=pGLkceISAAAA:8 a=VnNF1IyMAAAA:8 a=yLRsOmMQGpVHI0ogWx0A:9 a=2JgSa4NbpEOStq-L5dxp:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-21_02,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 phishscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605210142 X-Rspamd-Queue-Id: 30AFF16000B X-Stat-Signature: 4e4aqf559ujue7pdyt71u3cjwwx1mx6z X-Rspam-User: X-Rspamd-Server: rspam12 X-HE-Tag: 1779373574-63433 X-HE-Meta: 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 7TV1rRj0 IUtAR4bAeeqKETfL6+4FDy/4GqFoXkejn+SrXa3oFYYlq8dO7ftbH3Mmm1GQLSHl92A6i3UL8JLIa0mEIZWoxYObTLamaqKfRCNMVCU46QOsBS4wlkpgajba1tGBVv8OIdOwg0IbrfBpZZ67VuWNI5oiJEgbop9VRf/glI5lOVuZ1r1Oa9CXI9WIcFjiL0FKWO8oEcOZAxOuCjTNaXFMHLCgEVJ7VylWXqwSquttSaHGDJZaL6rnZaaU/3LhNh5cBOOYvGb/5tiv3aFVba6OR8gZj39grbEJOK6i6G+WcJhwyn0W51A24SB4srLwI8fhQ+YAR Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Josh Poimboeuf To avoid continued attempted use of a bad .sframe section, remove it on demand when the first sign of corruption is detected. Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt (Google) Reviewed-by: Indu Bhagat Signed-off-by: Jens Remus --- Notes (jremus): Changes in v15: - sframe_find(): Align to normalized error code usage and remove .sframe for all but ENOENT. Also remove if user_read_access_begin() fails. kernel/unwind/sframe.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/kernel/unwind/sframe.c b/kernel/unwind/sframe.c index 41ece3ca62a1..e0eb2adf5a07 100644 --- a/kernel/unwind/sframe.c +++ b/kernel/unwind/sframe.c @@ -371,10 +371,15 @@ int sframe_find(unsigned long ip, struct unwind_user_frame *frame) ret = __find_fre(sec, &fde, ip, frame); } +end: + if (ret && ret != -ENOENT) + WARN_ON_ONCE(sframe_remove_section(sec->sframe_start)); + return ret; Efault: - return -EFAULT; + ret = -EFAULT; + goto end; } static void free_section(struct sframe_section *sec) -- 2.51.0