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 30F591DB958; Tue, 8 Apr 2025 14:22:40 +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=1744122162; cv=none; b=bUyUlzxxK+uNKWueo/VESKdmetRClV5n5xWY4M7FPELarRdZ3oSOSHaMy2GjP6oeEdtdpjKamSFcfyqWc4e6alyXT/KJjBgPdVlzVEHpBxqGNfFVrjSG3HVSwqGOExST9/BdIVnkYox9OcKbGlU8UW9h5M6YQymDLoWS0OvbR6M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744122162; c=relaxed/simple; bh=lcPbNoHY32hfMLXK0I9on2JgdqFyxj5M9NfZlD7bhIA=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=sYKhvVB1e7X+1FrBulDhBOsXYso/uQYRL4EDPXccOsVEUGJLs7LxLn4zJeuTT2Og/m/xG000j3p7U1s9hip2n+eK2SVexBcauADqtkETp0yMUfpnd/qcyBQsUaim8VNpXymAfUP1quhUOHRaGiVqnoZHrsv51KuzE3fJxvp64vM= 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=gDQ2dgo1; 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="gDQ2dgo1" Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 538ChQh8029846; Tue, 8 Apr 2025 14:22:15 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=lcPbNo HY32hfMLXK0I9on2JgdqFyxj5M9NfZlD7bhIA=; b=gDQ2dgo1+c3N4ulFEkxdKS 4P2Jlx0wNUPeWNcyzkcq0r/EGsLs8gRdlX+6q8OFuXeU102zAC4FhNHL/V+4qzJc p+niv1CGoOrOt0eBkfU3cTQO4TIhnRf1rmfp9flprMX1XeAa+YvuRExxMXHcFKM4 wk/WAkEzjXkt1EixICdM/sx95ZKceC9B9viXquEgUByH8UOIZbEJ1svnNjlfkJ+n x1o5sr5mcVzRaetZy5JA/+L1PZEo36umXXXxleb+3XduujkUjGCy1PJcb5OM/0dH NJK41hSCjQ1yIvcCHzoAkrKg4kYW727re/cQwBfxlboMwaEeAT3m3o0GLyZmvHxw == 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 45vv6a2tq2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 08 Apr 2025 14:22:15 +0000 (GMT) Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 538BLD5Q011078; Tue, 8 Apr 2025 14:22:13 GMT Received: from smtprelay03.dal12v.mail.ibm.com ([172.16.1.5]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 45uf7yk5hr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 08 Apr 2025 14:22:13 +0000 Received: from smtpav01.dal12v.mail.ibm.com (smtpav01.dal12v.mail.ibm.com [10.241.53.100]) by smtprelay03.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 538EMDGD25035364 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 8 Apr 2025 14:22:13 GMT Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 288CB58057; Tue, 8 Apr 2025 14:22:13 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F3FB458066; Tue, 8 Apr 2025 14:22:11 +0000 (GMT) Received: from li-43857255-d5e6-4659-90f1-fc5cee4750ad.ibm.com (unknown [9.61.48.163]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 8 Apr 2025 14:22:11 +0000 (GMT) Message-ID: Subject: Re: [PATCH v11 7/9] ima: verify if the segment size has changed From: Mimi Zohar To: steven chen , stefanb@linux.ibm.com, roberto.sassu@huaweicloud.com, roberto.sassu@huawei.com, eric.snowberg@oracle.com, ebiederm@xmission.com, paul@paul-moore.com, code@tyhicks.com, bauermann@kolabnow.com, linux-integrity@vger.kernel.org, kexec@lists.infradead.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org Cc: madvenka@linux.microsoft.com, nramas@linux.microsoft.com, James.Bottomley@HansenPartnership.com, bhe@redhat.com, vgoyal@redhat.com, dyoung@redhat.com Date: Tue, 08 Apr 2025 10:22:11 -0400 In-Reply-To: <20250402124725.5601-8-chenste@linux.microsoft.com> References: <20250402124725.5601-1-chenste@linux.microsoft.com> <20250402124725.5601-8-chenste@linux.microsoft.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.4 (3.52.4-2.fc40) Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: tD1oxfS_HxPWPw2k7-OlMQwtJG4Sl7kV X-Proofpoint-GUID: tD1oxfS_HxPWPw2k7-OlMQwtJG4Sl7kV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-04-08_06,2025-04-08_03,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 adultscore=0 clxscore=1015 suspectscore=0 bulkscore=0 mlxlogscore=825 mlxscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2504080098 On Wed, 2025-04-02 at 05:47 -0700, steven chen wrote: > kexec 'load' may be called multiple times. Free and realloc the buffer > only if the segment_size is changed from the previous kexec 'load' call. >=20 > Signed-off-by: steven chen Thanks, Steven. Reviewed-by: Mimi Zohar