From nobody Tue Dec 2 02:29:52 2025 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 1937D2E62B5; Wed, 19 Nov 2025 13:24:33 +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=1763558675; cv=none; b=b6df14e2iL2UBMgzt5O6TR4G2M3F2N9qK5Brf/vfNe2yYnwxTkSrPy8zH6k0VT6ab7wAD4jdw3LXeYNYz321Zasv8UG5x9gBfz2gSgmsnVilz9ZGk4yQu828wTYifMhymRXQQoPWKlothCrsb+JnfXvD8H8utzFT1/9xnI+Fu7w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763558675; c=relaxed/simple; bh=PD5KjV0dW4MzNSSIuhKUR08ZjfvgDX5ar77ah0hVkUI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=moLpMUugDL+6+dlqW9Qm1aJ6lGKJ16pB5jR5VIt+32nYsKHoF6o6XDiAht1SfTyHd4ezChoS1gtqlrco3f1JCHBsIUBOu9HqCw3Kzt5FL6ybc3MG2QUivL9XQOJNJZnsYX2Zj3dp/rDIrnqYYNYsIvVDbLeRkTmKq0wgFbtR4ks= 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=ojnpFOpm; 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="ojnpFOpm" Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5AJ7lPJS018097; Wed, 19 Nov 2025 13:23:38 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=4y3LM4t1myVzp8ykI RFVERQ9BO+2u20q4avccARI3e0=; b=ojnpFOpmkw+dE3C898yuZ8KmM8BDckVFy LhPLqU+DO4SC2zBYXeUwUdiCrA2kuL0N6+VJkejlKDv6fGSSz7HZ6oSsxtGbVP8e TqKmPD6fkIz1aBq6KkLKw1ruO5U1WIpo7ZqcFKcsifBN1lRKtgPjJJdxz+Xrl92n T2OnCLQ3NdBaJlT96eOTsCh5zBwOtsbbyHDy9PTjl00dyiOCslfztRscK4M9pprb RQhAbXv3RWP/daGMiYAvqGrTnqtcoLQk81lumUctGqq4w0LCrOvidFZd8UhqT56I KBCMghXOzheqs+HrKPXV0U/pmKkjFj90BznIoWRgQTCeIK65y2IhA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4aejka0jcn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Nov 2025 13:23:38 +0000 (GMT) Received: from m0353729.ppops.net (m0353729.ppops.net [127.0.0.1]) by pps.reinject (8.18.1.12/8.18.0.8) with ESMTP id 5AJDFsBb018047; Wed, 19 Nov 2025 13:23:37 GMT Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4aejka0jch-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Nov 2025 13:23:37 +0000 (GMT) Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 5AJBEm2P022434; Wed, 19 Nov 2025 13:23:35 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4af4un0tc0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Nov 2025 13:23:35 +0000 Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 5AJDNVO936045160 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 19 Nov 2025 13:23:31 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C5A7820040; Wed, 19 Nov 2025 13:23:31 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 450B320043; Wed, 19 Nov 2025 13:23:31 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 19 Nov 2025 13:23:31 +0000 (GMT) From: Jens Remus To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org, Steven Rostedt Cc: Jens Remus , Josh Poimboeuf , Masami Hiramatsu , Mathieu Desnoyers , Peter Zijlstra , Ingo Molnar , Jiri Olsa , Arnaldo Carvalho de Melo , Namhyung Kim , Thomas Gleixner , Andrii Nakryiko , Indu Bhagat , "Jose E. Marchesi" , Beau Belgrave , Linus Torvalds , Andrew Morton , Florian Weimer , Kees Cook , "Carlos O'Donell" , Sam James , Dylan Hatch , Borislav Petkov , Dave Hansen , David Hildenbrand , "H. Peter Anvin" , "Liam R. Howlett" , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , Heiko Carstens , Vasily Gorbik , "Steven Rostedt (Google)" Subject: [PATCH v12 10/13] unwind_user/sframe: Remove .sframe section on detected corruption Date: Wed, 19 Nov 2025 14:23:20 +0100 Message-ID: <20251119132323.1281768-11-jremus@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251119132323.1281768-1-jremus@linux.ibm.com> References: <20251119132323.1281768-1-jremus@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: dasUaUOJpHebFMhJgsmDmO-6X7S72ESd X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTE1MDAzMiBTYWx0ZWRfX6roNHJ3Sgr5T g0w/TinR4dYGNLryUzbMNRTLxhl8RfezYgHQXTH0V+yLtFS/pADobDgArk198VDEycF6FGJaEC1 a2NlUyWg++C3zT99TEnGq+AG0k3UdOf9z2PjeeARcuXqLm9MUN6tUED45JymJn5VyhGqOR5Ruk/ vDROOJ+IcV4aBAvq2fAt3CA7lWjATXUQImh98anoIZiOjOcZJag/PfbTdV1HvkftYHXR0gsU1Lr I60+U1PmeS+vLhBjVRyKefFCuiMowm69B4LAPN4bqSW9jZWJbUSbdslhHIkrpVJ/jiy4wW+6T2z Wxti3biy8H3LHC5l6eLz4r0o+QPOq/Usib8fIBXidztr6ZMvMy/eJU1efVy/MJuzTkaHuZ6ax+b WGumD1SSFt2osQwS0n7WEHCh5ZioyQ== X-Proofpoint-ORIG-GUID: SLtu1LenXUFsCw6Xve05BxuMJ5AzEBGo X-Authority-Analysis: v=2.4 cv=XtL3+FF9 c=1 sm=1 tr=0 ts=691dc4da cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=6UeiqGixMTsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=7d_E57ReAAAA:8 a=JfrnYn6hAAAA:8 a=yPCof4ZbAAAA:8 a=mDV3o1hIAAAA:8 a=yMhMjlubAAAA:8 a=VnNF1IyMAAAA:8 a=Z4Rwk6OoAAAA:8 a=20KFwNOVAAAA:8 a=7mOBRU54AAAA:8 a=meVymXHHAAAA:8 a=UW-gzNxWWvgdzlWFvSoA:9 a=jhqOcbufqs7Y1TYCrUUU:22 a=1CNFftbPRP8L7MoqJWF3:22 a=HkZW87K1Qel5hWWM3VKY:22 a=wa9RWnbW_A1YIeRBVszw:22 a=2JgSa4NbpEOStq-L5dxp:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-19_04,2025-11-18_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 bulkscore=0 priorityscore=1501 impostorscore=0 adultscore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2511150032 Content-Type: text/plain; charset="utf-8" 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. Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Jiri Olsa Cc: Arnaldo Carvalho de Melo Cc: Namhyung Kim Cc: Thomas Gleixner Cc: Andrii Nakryiko Cc: Indu Bhagat Cc: "Jose E. Marchesi" Cc: Beau Belgrave Cc: Jens Remus Cc: Linus Torvalds Cc: Andrew Morton Cc: Florian Weimer Cc: Sam James Cc: Kees Cook Cc: "Carlos O'Donell" Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt (Google) Signed-off-by: Jens Remus --- kernel/unwind/sframe.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/unwind/sframe.c b/kernel/unwind/sframe.c index 1e877c3e5417..61340ee524c2 100644 --- a/kernel/unwind/sframe.c +++ b/kernel/unwind/sframe.c @@ -342,6 +342,10 @@ int sframe_find(unsigned long ip, struct unwind_user_f= rame *frame) ret =3D __find_fre(sec, &fde, ip, frame); end: user_read_access_end(); + + if (ret =3D=3D -EFAULT) + WARN_ON_ONCE(sframe_remove_section(sec->sframe_start)); + return ret; } =20 --=20 2.48.1