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Tue, 13 May 2025 11:41:28 +0000 (GMT) Message-ID: <71973027bb0fbc436a95e8bb7fbd2b7d2eab95b4.camel@linux.ibm.com> Subject: Re: [PATCH] ima: Kdump kernel doesn't need IMA to do integrity measurement 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 Date: Tue, 13 May 2025 07:41:27 -0400 In-Reply-To: <20250502200337.6293-1-chenste@linux.microsoft.com> References: <20250502200337.6293-1-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) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: iOEulkBYl26x9Ilz2fprraGsqD1yO4zT X-Proofpoint-ORIG-GUID: iOEulkBYl26x9Ilz2fprraGsqD1yO4zT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTEzMDExMCBTYWx0ZWRfXx4Can8PSvMlx vUnHo5sK6RKQqOBsktYUfIOrlvFLhTo0GVAWEmx49wj6RQzhzdH27Nhp61/bXy1XXjWUG1KRDxb HtzJag6Q6I2wdLeL/qKd1sKBSvtY/Z5TUyPwI03klxn8Ofs7rVQblrSRLizGrCGE0rXmCg/LFSB A+1JZeQ/9u0uQD7xzHUphUeoM0Q3zidn21ttZTszqsd7qJ5mJL898Ipw2vUgGLjEjpJaElmwlFr mjAyeiKlH82/ixFANG4qGOpW3BhP7XaS2dEfDW6FwSz1fgV5BfmdTRAnlUMar1h1gPJO+YyeRny 35a1VF+qvOXRY60pgVF6rNpAE8sC3lcSf6oBH2rWl4+2tSTqzvIRMqTI4mQqJfg2RHUxd17pv+/ oviUApI6smnWpZ9l4I2WM2gT5F4s6bhSGEpe8p9uTHfSy14+ivwSRqwLhxJtiVLkogVSQoNP X-Authority-Analysis: v=2.4 cv=Sfb3duRu c=1 sm=1 tr=0 ts=68232fea cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=dt9VzEwgFbYA:10 a=yMhMjlubAAAA:8 a=1v2mA-L8tnUgDz3cNWsA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-13_01,2025-05-09_01,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 spamscore=0 impostorscore=0 phishscore=0 malwarescore=0 mlxscore=0 adultscore=0 bulkscore=0 clxscore=1015 suspectscore=0 lowpriorityscore=0 priorityscore=1501 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2505130110 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250513_044251_193365_5E1DD896 X-CRM114-Status: GOOD ( 11.47 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org Hi Steven, On Fri, 2025-05-02 at 13:03 -0700, steven chen wrote: > From: Steven Chen >=20 > Kdump kernel doesn't need IMA to do integrity measurement. > Hence the measurement list in 1st kernel doesn't need to be copied to > kdump kenrel. ^kernel Please use "scripts/checkpatch.pl --codespell" to check for typos. Mimi >=20 > Here skip allocating buffer for measurement list copying if loading > kdump kernel. Then there won't be the later handling related to > ima_kexec_buffer. >=20 > Signed-off-by: Steven Chen