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Tue, 3 Jun 2025 14:42:50 +0800 (CST) Date: Tue, 3 Jun 2025 14:42:50 +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_Qu2fCvWYvUEs5iCeZ+kZnEYQheY4XMKyuPkg1YJXOp80iCXQ3wodeXBxJkTkwcOOJiWSvxe8aSZS7+RTe4BFYbCc4d9Jz2f4Rj+jg9I0Cwlc Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=GBK Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <4939eff.64be.19734874658.Coremail.00107082@163.com> X-Coremail-Locale: zh_CN X-CM-TRANSID:iigvCgDHr9prmT5ov6oSAA--.26836W X-CM-SenderInfo: qqqrilqqysqiywtou0bp/xtbBkBJhqmg+kwHr9AADsR X-Coremail-Antispam: 1U5529EdanIXcx71UUUUU7vcSsGvfC2KfnxnUU== CkF0IDIwMjUtMDYtMDMgMTQ6MzQ6NTksICJZZW9yZXVtIFl1biIgPHllb3JldW0ueXVuQGFybS5j b20+IHdyb3RlOgo+SGkgRGF2aWQsCj4+ID4gYXR0YWNoX3N0YXRlIGRvZXNuJ3QgcmVsYXRlZCBm b3IgZXZlbnQtPnN0YXRlIGNoYW5nZS4KPj4gPiBpZiBvbmUgZXZlbnQgYWxyZWFkeSBjbGVhcmVk IFBFUkZfQVRUQUNIX0NPTlRFWFQsIHRoYXQgZXZlbnQgaXMgY2FsbGVkCj4+ID4gdmlhIGxpc3Rf ZGVsX2V2ZW50KCkKPj4KPj4gTWF5YmUgdGhpcyBjb25jZXJuIGNvdWxkIGJlIGNsYXJpZmllZCwg d2hhdCBhYm91dCBvdGhlciBzdWJ0bGUgaW1wYWN0cy4KPj4gVGhlIGNoYW5nZSBzaG91bGQgYmUg dGhvcm91Z2ggcmV2aWV3ZWQsIGlmIHlvdSB3YW50IHRvIHB1c2ggaXQgZnVydGhlci4KPj4KPj4g SXQgdGFrZXMgbWUgbW9yZSB0aGFuIGEgbW9udGggdG8gZmlndXJlIG91dCBhIHByb2NlZHVyZSB0 byByZXByb2R1Y2UgdGhlIGtlcm5lbCBwYW5pYyBidWcsCj4+IEl0IGlzICBqdXN0IHZlcnkgaGFy ZCB0byBjYXB0dXJlIGEgYnVnIGhhcHBlbnMgaW4gcmFyZSBzaXR1YXRpb24uCj4+Cj4+IEFuZCB5 b3VyIHBhdGNoIGhhcyBhIGdsb2JhbCBpbXBhY3QsIGl0IGNoYW5nZXMgYmVoYXZpb3IgdW5uZWNl c3NhcmlseS4KPgo+VEJILCB0aGlzIHBhdGNoIGp1c3QgY2hhbmdlIG9mIHRpbWUgb2YgImV2ZW50 LT5zdGF0ZSIgd2hpbGUgZG9pbmcsCj5BcyBteSBiYWQgbWlzcyB0aGUgZGlzYWJsZSBjZ29ydXAg cGVyZi4KPkkgdGhpbmsgdGhlcmUgc2VlbXMgbm8gb3RoZXIgc2lkZSBlZmZlY3QgZm9yIGNoYW5p bmcgc3RhdGUgd2hpbGUgaW4KPnJlbW92aW5nIGV2ZW50Lgo+QnV0LCBMZXQncyB3YWl0IGZvciBv dGhlciBwZW9wbGUncyByZXZpZXcuCj4KPj4gPgo+PiA+IEFsc28sIHlvdXIgcGF0Y2ggY291bGRu J3Qgc29sdmUgYSBwcm9ibGVtIGRlc2NyaWJlIGluCj4+ID4gY29tbWl0IGEzYzNjNjY2NygicGVy Zi9jb3JlOiBGaXggY2hpbGRfdG90YWxfdGltZV9lbmFibGVkIGFjY291bnRpbmcgYnVnIGF0IHRh c2sgZXhpdCIpCj4+ID4gZm9yIElOQ0FUSVZFIGV2ZW50J3MgdG90YWxfZW5hYmxlX3RpbWUuCj4+ Cj4+IEkgZG8gbm90IHRoaW5rIHNvLgo+PiBDb3JyZWN0IG1lIGlmIEkgYW0gbWFraW5nIHNpbGx5 ICBtaXN0YWtlcywKPj4gVGhlIHBhdGNoLCBodHRwczovL2xvcmUua2VybmVsLm9yZy9sa21sLzIw MjUwNjAzMDMyNjUxLjM5ODgtMS0wMDEwNzA4MkAxNjMuY29tLwo+PiBjYWxscyBwZXJmX2V2ZW50 X3NldF9zdGF0ZSgpIGJhc2VkIG9uIERFVEFDSF9FWElUIGZsYWcsIHdoaWNoIGNvdmVyIHRoZSBJ TkFDVElWRSBzdGF0ZSwgcmlnaHQ/Cj4+IElmIERFVEFDSF9FWElUIGlzIG5vdCB1c2VkIGZvciB0 aGlzIHB1cnBvc2U/IFRoZW4gd2h5IHNob3VsZCBpdCBleGlzdCBhdCB0aGUgZmlyc3QgcGxhY2U/ Cj4+IEkgdGhpbmsgSSBkb2VzIG5vdCByZXZlcnQgdGhlIHB1cnBvc2Ugb2YgY29tbWl0IGEzYzNj NjY2Ny4uLi4uQnV0IEkgY291bGQgYmUgd3JvbmcKPj4gV291bGQgeW91IHNob3cgYSBjYWxsIHBh dGggd2hlcmUgREVUQUNIX0VYSVQgaXMgbm90IHNldCwgYnV0IHRoZSBjaGFuZ2VzIGluIGNvbW1p dCBhM2MzYzY2NjcgaXMgc3RpbGwgbmVlZGVkPwo+Cj5Tb3JyeSBmb3IgbXkgYmFkIGV4cGxhaW5h dGlvbiB3aXRob3V0IGRldGFpbC4KPlRoaW5rIGFib3V0IGNwdSBzcGVjaWZpYyBldmVudCBhbmQg Y2xvc2VkIGJ5IHRhc2suCj5JZiB0aGVyZSBpcyBzcGVjaWZpYyBjaGlsZCBjcHUgZXZlbnQgc3Bl Y2lmaWVkIGluIGNwdSAwLgo+ICAxLiBjcHUgMCAtPiBhY3RpdmUKPiAgMi4gc2NoZXVsZGVkIHRv IGNwdTEgLT4gaW5hY3RpdmUKPiAgMy4gY2xvc2UgdGhlIGNwdSBldmVudCBmcm9tIHBhcmVudCAt PiBpbmFjdGl2ZSBjbG9zZQo+Cj5DYW4gYmUgZmFpbGVkIHRvIGNvdW50IHRvdGFsX2VuYWJsZV90 aW1lLgoKSXMgdGhpcyBleHBsYWluaW5nIHRoZSBwdXJwb3NlIG9mIGNvbW1pdCBhM2MzYzY2Njcg PwpJIGFtIG5vdCBhcmd1aW5nIHdpdGggaXQuIEFuZCBJIGFsc28gbm90IHN1Z2dlc3QgcmV2ZXJ0 aW5nIGl0LiAoaXQgaXMganVzdCB0aGF0IHJldmVydGluZyBpdCBjYW4gZml4IHRoZSBrZXJuZWwg cGFuaWMuKQoKPgo+VGhhbmtzLgo+LS0KPlNpbmNlcmVseSwKPlllb3JldW0gWXVuCg==