From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 E898324E015 for ; Wed, 19 Mar 2025 02:43:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742352224; cv=none; b=XYvC90E5MMivyAXr6c/A5eRpbXSU4kLPM9GyA3HyOs3sre+GHrvi7izg7Mg/ti2peuh+5QwFkpkEueHG7QN30CsYl5I35y+0VnRHwPPRrpD4t2l8C6hfy++v0lcuxYO8AoUqX0ilzfrMYUUtCW2I0KdILqqtYG/Vn4IsWG4e+Ec= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742352224; c=relaxed/simple; bh=ZQTUjePxm5TGZCk9G/ywjE3xKzudTs5M9ElXEf27t+g=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=chPchmcdUGjJ7SXZof82doWDkV6VnamKHSadXpnPLeW4n3o0mWf1Y/4g1Oin/ROqJX13sHoRZ+ry9477QS3mjwXnVqhUNlUrt9kzBt7i3+kvFJzhkKik4e90M/GbXcNzoCyw8Mlle65UuqvfqoVq8vI6t6bReq93Sy56Znw6F5Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=AL8cmmpU; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="AL8cmmpU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1742352221; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=pppH5gnOqQCyGbRm+GFbQIGngpP8DhwB6Ev0UDCWREA=; b=AL8cmmpUWZ9WUomc5mGA32cjb9AIaIrFAPAdEEdCPA9aSRk/D+rQz5h3AwVg1wqxVASZcb 7oQNs6q72r962p2IPuSIdXOXwOs+vQqtqTMbC7MaMIMp6Hder2+iWJ1GGm4RasMMea3I2H GGdL9j6/FpBcYyy7gdmnqIxgXuzZO58= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-475-aJgyg-HUOCybde04zKe6yw-1; Tue, 18 Mar 2025 22:43:38 -0400 X-MC-Unique: aJgyg-HUOCybde04zKe6yw-1 X-Mimecast-MFC-AGG-ID: aJgyg-HUOCybde04zKe6yw_1742352216 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B294218001DE; Wed, 19 Mar 2025 02:43:35 +0000 (UTC) Received: from localhost (unknown [10.72.112.30]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 13EA13001D0E; Wed, 19 Mar 2025 02:43:32 +0000 (UTC) Date: Wed, 19 Mar 2025 10:43:27 +0800 From: Baoquan He To: Stefan Berger Cc: steven chen , zohar@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, madvenka@linux.microsoft.com, nramas@linux.microsoft.com, James.Bottomley@hansenpartnership.com, vgoyal@redhat.com, dyoung@redhat.com Subject: Re: [PATCH v10 1/8] ima: rename variable the ser_file "file" to "ima_kexec_file" Message-ID: References: <20250318010448.954-1-chenste@linux.microsoft.com> <20250318010448.954-2-chenste@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 On 03/18/25 at 11:10am, Stefan Berger wrote: > > > On 3/17/25 9:04 PM, steven chen wrote: > > The name of the local variable "file" of type seq_file defined in the > > ima_dump_measurement_list function is too generic. To better reflect the > > purpose of the variable, rename it to "ima_kexec_file". This change will > > help improve code readability and maintainability by making the variable's > > role more explicit. > > > > The variable ima_kexec_file is indeed the memory allocated for copying IMA > > measurement records. The ima_dump_measurement_list function calculates the > > actual memory occupied by the IMA logs and compares it with the allocated > > memory. If there is enough memory, it copies all IMA measurement records; > > otherwise, it does not copy any records, which would result in a failure > > of remote attestation. > > > > Suggested-by: Mimi Zohar > > Signed-off-by: steven chen > > > > --- > > security/integrity/ima/ima_kexec.c | 39 ++++++++++++++++++------------ > > 1 file changed, 24 insertions(+), 15 deletions(-) > > > > diff --git a/security/integrity/ima/ima_kexec.c b/security/integrity/ima/ima_kexec.c > > index 9d45f4d26f73..8567619889d1 100644 > > --- a/security/integrity/ima/ima_kexec.c > > +++ b/security/integrity/ima/ima_kexec.c > > @@ -15,33 +15,41 @@ > > #include "ima.h" > > #ifdef CONFIG_IMA_KEXEC > > +/* > > + * Copy the measurement list to the allocated memory > > + * compare the size of IMA measurement list with the size of the allocated memory > > Compare the size of the IMA ... memory. > > > > + * if the size of the allocated memory is not less than the size of IMA measurement list > > + * copy the measurement list to the allocated memory. > > + * else > > + * return error > > If the size of the allocated memory is not less than the size of IMA > measurement list, copy the measurement list to the allocated memory, return > an error otherwise. Ack the suggested change.