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Wed, 16 Jun 2021 09:15:06 +0000 From: "nobuta.keiya@fujitsu.com" To: 'Suraj Jitindar Singh' , "madvenka@linux.microsoft.com" , "broonie@kernel.org" , "mark.rutland@arm.com" , "jpoimboe@redhat.com" , "ardb@kernel.org" , "catalin.marinas@arm.com" , "will@kernel.org" , "jmorris@namei.org" , "pasha.tatashin@soleen.com" , "jthierry@redhat.com" , "linux-arm-kernel@lists.infradead.org" , "live-patching@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [RFC PATCH v5 2/2] arm64: Create a list of SYM_CODE functions, check return PC against list Thread-Topic: [RFC PATCH v5 2/2] arm64: Create a list of SYM_CODE functions, check return PC against list Thread-Index: AQHXUnkEGTjowitNFUOpYKuZUbtb4KsV/3OAgAB5zCA= Date: Wed, 16 Jun 2021 09:15:06 +0000 Message-ID: References: <20210526214917.20099-1-madvenka@linux.microsoft.com> <20210526214917.20099-3-madvenka@linux.microsoft.com> <712b44d2af8f8cd3199aad87eb3bc94ea22d6f4a.camel@gmail.com> In-Reply-To: <712b44d2af8f8cd3199aad87eb3bc94ea22d6f4a.camel@gmail.com> Accept-Language: ja-JP, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: x-shieldmailcheckermailid: 42e78a8635aa4f5584ac4871d4cc5762 x-securitypolicycheck: OK by SHieldMailChecker v2.6.3 msip_labels: MSIP_Label_a7295cc1-d279-42ac-ab4d-3b0f4fece050_Enabled=true; 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charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: fujitsu.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: TY2PR01MB5257.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f88495da-3550-47c7-ed81-08d930a73b53 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Jun 2021 09:15:06.2223 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a19f121d-81e1-4858-a9d8-736e267fd4c7 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: YesLkmyaKNL4xm0q5z/mPXs1aVN9qisZsAEC1EKGuA4OjZOIsZn+y+NNRepXClQJeEIvyieqUmQbuCJEFP+vuKR5ApWpnPDzkrSHS+02BIU= X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYAPR01MB3309 Precedence: bulk List-ID: X-Mailing-List: live-patching@vger.kernel.org Hi Suraj, >=20 > if (frame->fp =3D=3D (unsigned long)task_pt_regs(tsk)->stackframe) > return -ENOENT; If I understand correctly, a similar final frame check is introduced in thi= s patch: arm64: Implement stack trace termination record https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?id= =3D7d7b720a4b80 It is currently merged into for-next/stacktrace branch. Thanks & Best Regards, Keiya Nobuta --------------------------------------------------------- Solution Development Dept. Software Div. FUJITSU COMPUTER TECHNOLOGIES Ltd.