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Tue, 3 Jun 2025 13:44:47 +0800 (CST) Date: Tue, 3 Jun 2025 13:44:47 +0800 (CST) From: "David Wang" <00107082@163.com> To: "Yeoreum Yun" Cc: peterz@infradead.org, mingo@redhat.com, mingo@kernel.org, acme@kernel.org, namhyung@kernel.org, leo.yan@arm.com, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com, kan.liang@linux.intel.com, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] perf/core: fix dangling cgroup pointer in cpuctx X-Priority: 3 X-Mailer: Coremail Webmail Server Version XT5.0.14 build 20240801(9da12a7b) Copyright (c) 2002-2025 www.mailtech.cn 163com In-Reply-To: References: X-NTES-SC: AL_Qu2fCvWZtkwj4SacbOkZnEYQheY4XMKyuPkg1YJXOp80iCXQ3wodeXBxJkTkwcOOJiWSvxe8aSZS7+RTe4BFYbAa3IrUHJfyeLXrOMPPSboW Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=GBK Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <19514ed5.5692.19734522326.Coremail.00107082@163.com> X-Coremail-Locale: zh_CN X-CM-TRANSID:iigvCgDXX9DQiz5oJ5gSAA--.25089W X-CM-SenderInfo: qqqrilqqysqiywtou0bp/xtbBkAhhqmg+fYgVoAAHsC X-Coremail-Antispam: 1U5529EdanIXcx71UUUUU7vcSsGvfC2KfnxnUU== CkF0IDIwMjUtMDYtMDMgMTI6NDY6MDMsICJZZW9yZXVtIFl1biIgPHllb3JldW0ueXVuQGFybS5j b20+IHdyb3RlOgo+SGkgRGF2aWEsCj4KPj4gSSB0aGluayB0aGlzIHBhdGNoIGlzIG5vIGJldHRl ciB0aGFuIG15IHBhdGNoIGluIHRoZSBvcmlnaW5hbCByZXBvcnQKPj4gaHR0cHM6Ly9sb3JlLmtl cm5lbC5vcmcvYWxsLzIwMjUwNjAxMTczNjAzLjM5MjAtMS0wMDEwNzA4MkAxNjMuY29tLwo+Pgo+ PiBUaGlzIHBhdGNoIGlzIG1vcmUgYWdncmVzc2l2ZSwgIGl0IGFkZCBtb3JlIGNoYW5nZXMgdG8g b3JpZ2luYWwgbG9naWMsIHNhbWUgcHJhY3RpY2UKPj4gYXMgaW4gdGhlIG9mZmVuZGluZyBjb21t aXQuICB3b3VsZCByYWlzZSBtb3JlIGNvbmNlcm5zIGFib3V0IGhpZGRlbiBzaWRlLWVmZmVjdC4K Pj4KPj4gRm9yIGV4YW1wbGUsIHRoaXMgY29kZSAgaW4gbGlzdF9kZWxfZXZlbnQgc2hvdWxkIHJh aXNlIGNvbmNlcm4gYWJvdXQgdGhpcyBwYXRjaAo+PiAyMDk5ICAgICAgICAgICogV2UgY2FuIGhh dmUgZG91YmxlIGRldGFjaCBkdWUgdG8gZXhpdC9ob3QtdW5wbHVnICsgY2xvc2UuCj4+ICAyMTAw ICAgICAgICAgICovCj4+ICAyMTAxICAgICAgICAgaWYgKCEoZXZlbnQtPmF0dGFjaF9zdGF0ZSAm IFBFUkZfQVRUQUNIX0NPTlRFWFQpKQo+PiAgMjEwMiAgICAgICAgICAgICAgICAgcmV0dXJuOwo+ Cj5hdHRhY2hfc3RhdGUgZG9lc24ndCByZWxhdGVkIGZvciBldmVudC0+c3RhdGUgY2hhbmdlLgo+ aWYgb25lIGV2ZW50IGFscmVhZHkgY2xlYXJlZCBQRVJGX0FUVEFDSF9DT05URVhULCB0aGF0IGV2 ZW50IGlzIGNhbGxlZAo+dmlhIGxpc3RfZGVsX2V2ZW50KCkKCk1heWJlIHRoaXMgY29uY2VybiBj b3VsZCBiZSBjbGFyaWZpZWQsIHdoYXQgYWJvdXQgb3RoZXIgc3VidGxlIGltcGFjdHMuClRoZSBj aGFuZ2Ugc2hvdWxkIGJlIHRob3JvdWdoIHJldmlld2VkLCBpZiB5b3Ugd2FudCB0byBwdXNoIGl0 IGZ1cnRoZXIuCgpJdCB0YWtlcyBtZSBtb3JlIHRoYW4gYSBtb250aCB0byBmaWd1cmUgb3V0IGEg cHJvY2VkdXJlIHRvIHJlcHJvZHVjZSB0aGUga2VybmVsIHBhbmljIGJ1ZywKSXQgaXMgIGp1c3Qg dmVyeSBoYXJkIHRvIGNhcHR1cmUgYSBidWcgaGFwcGVucyBpbiByYXJlIHNpdHVhdGlvbi4KCkFu ZCB5b3VyIHBhdGNoIGhhcyBhIGdsb2JhbCBpbXBhY3QsIGl0IGNoYW5nZXMgYmVoYXZpb3IgdW5u ZWNlc3NhcmlseS4KCj4KPkFsc28sIHlvdXIgcGF0Y2ggY291bGRuJ3Qgc29sdmUgYSBwcm9ibGVt IGRlc2NyaWJlIGluCj5jb21taXQgYTNjM2M2NjY3KCJwZXJmL2NvcmU6IEZpeCBjaGlsZF90b3Rh bF90aW1lX2VuYWJsZWQgYWNjb3VudGluZyBidWcgYXQgdGFzayBleGl0IikKPmZvciBJTkNBVElW RSBldmVudCdzIHRvdGFsX2VuYWJsZV90aW1lLgoKSSBkbyBub3QgdGhpbmsgc28uCkNvcnJlY3Qg bWUgaWYgSSBhbSBtYWtpbmcgc2lsbHkgIG1pc3Rha2VzLApUaGUgcGF0Y2gsIGh0dHBzOi8vbG9y ZS5rZXJuZWwub3JnL2xrbWwvMjAyNTA2MDMwMzI2NTEuMzk4OC0xLTAwMTA3MDgyQDE2My5jb20v CmNhbGxzIHBlcmZfZXZlbnRfc2V0X3N0YXRlKCkgYmFzZWQgb24gREVUQUNIX0VYSVQgZmxhZywg d2hpY2ggY292ZXIgdGhlIElOQUNUSVZFIHN0YXRlLCByaWdodD8KSWYgREVUQUNIX0VYSVQgaXMg bm90IHVzZWQgZm9yIHRoaXMgcHVycG9zZT8gVGhlbiB3aHkgc2hvdWxkIGl0IGV4aXN0IGF0IHRo ZSBmaXJzdCBwbGFjZT8KSSB0aGluayBJIGRvZXMgbm90IHJldmVydCB0aGUgcHVycG9zZSBvZiBj b21taXQgYTNjM2M2NjY3Li4uLi5CdXQgSSBjb3VsZCBiZSB3cm9uZwpXb3VsZCB5b3Ugc2hvdyBh IGNhbGwgcGF0aCB3aGVyZSBERVRBQ0hfRVhJVCBpcyBub3Qgc2V0LCBidXQgdGhlIGNoYW5nZXMg aW4gY29tbWl0IGEzYzNjNjY2NyBpcyBzdGlsbCBuZWVkZWQ/CgoKRGF2aWQKCgo+Cj5UaGFua3Mu Cj4KPi0tCj5TaW5jZXJlbHksCj5ZZW9yZXVtIFl1bgo=