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Tue, 06 Sep 2022 16:40:05 -0400 X-MC-Unique: HVJi-dGPM3qW32kVJ8AuaA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 0D3EC101A56C; Tue, 6 Sep 2022 20:40:04 +0000 (UTC) Received: from [10.18.17.215] (dhcp-17-215.bos.redhat.com [10.18.17.215]) by smtp.corp.redhat.com (Postfix) with ESMTP id 59ADF4010D42; Tue, 6 Sep 2022 20:40:03 +0000 (UTC) Message-ID: <36a73401-7011-834a-7949-c65a2f66246c@redhat.com> Date: Tue, 6 Sep 2022 16:40:03 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Subject: Re: BUG: HANG_DETECT waiting for migration_cpu_stop() complete Content-Language: en-US From: Waiman Long To: Tejun Heo , Jing-Ting Wu Cc: Mukesh Ojha , Peter Zijlstra , Valentin Schneider , wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Jonathan.JMChen@mediatek.com, "chris.redpath@arm.com" , Dietmar Eggemann , Vincent Donnefort , Ingo Molnar , Juri Lelli , Vincent Guittot , Steven Rostedt , Ben Segall , Mel Gorman , Christian Brauner , cgroups@vger.kernel.org, lixiong.liu@mediatek.com, wenju.xu@mediatek.com References: <88b2910181bda955ac46011b695c53f7da39ac47.camel@mediatek.com> <203d4614c1b2a498a240ace287156e9f401d5395.camel@mediatek.com> <02b8e7b3-941d-8bb9-cd0e-992738893ba3@redhat.com> In-Reply-To: <02b8e7b3-941d-8bb9-cd0e-992738893ba3@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220906_134011_088480_516CA3D7 X-CRM114-Status: GOOD ( 22.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Ck9uIDkvNi8yMiAxNjowMSwgV2FpbWFuIExvbmcgd3JvdGU6Cj4gT24gOS82LzIyIDE0OjMwLCBU ZWp1biBIZW8gd3JvdGU6Cj4+IEhlbGxvLAo+Pgo+PiAoY2MnaW5nIFdhaW1hbiBpbiBjYXNlIGhl IGhhcyBhIGJldHRlciBpZGVhKQo+Pgo+PiBPbiBNb24sIFNlcCAwNSwgMjAyMiBhdCAwNDoyMjoy OVBNICswODAwLCBKaW5nLVRpbmcgV3Ugd3JvdGU6Cj4+PiBodHRwczovL2xvcmUua2VybmVsLm9y Zy9sa21sL1l2cldhbWwzRit4OURrK1RAc2xtLmR1Y2tkbnMub3JnLyBpcyBmb3IKPj4+IGZpeCBj Z3JvdXBfdGhyZWFkZ3JvdXBfcndzZW0gPC0+IGNwdXNfcmVhZF9sb2NrKCkgZGVhZGxvY2suCj4+ PiBCdXQgdGhpcyBpc3N1ZSBpcyBjZ3JvdXBfdGhyZWFkZ3JvdXBfcndzZW0gPC0+IGNwdXNldF9y d3NlbSBkZWFkbG9jay4KPj4gSWYgSSdtIHVuZGVyc3RhbmRpbmcgd2hhdCB5b3UncmUgd3JpdGlu ZyBjb3JyZWN0bHksIHRoaXMgaXNuJ3QgYSAKPj4gZGVhZGxvY2suCj4+IFRoZSBjcHVzZXRfaG90 cGx1Z193b3JrZm4gc2ltcGx5IGlzbid0IGJlaW5nIHdva2VuIHVwIHdoaWxlIGhvbGRpbmcKPj4g Y3B1c2V0X3J3c2VtIGFuZCBvdGhlcnMgYXJlIGp1c3Qgd2FpdGluZyBmb3IgdGhhdCBsb2NrIHRv IGJlIHJlbGVhc2VkLgo+Cj4gSSBiZWxpZXZlIGl0IGlzIHByb2JhYmx5IGEgYnVnIGluIHRoZSBz Y2hlZHVsZXIgY29yZSBjb2RlLiAKPiBfX3NldF9jcHVzX2FsbG93ZWRfcHRyX2xvY2tlZCgpIGNh bGxzIGFmZmluZV9tb3ZlX3Rhc2soKSB0byBtb3ZlIHRvIGEgCj4gcmFuZG9tIGNwdSB3aXRoaW4g dGhlIG5ldyBzZXQgYWxsb3dhYmxlIENQVXMuIEhvd2V2ZXIsIGlmIG1pZ3JhdGlvbiBpcyAKPiBk aXNhYmxlZCwgaXQgc2hvdWxkbid0IGNhbGwgYWZmaW5lX21vdmVfdGFzaygpIGF0IGFsbC4gSW5z dGVhZCwgSSAKPiB3b3VsZCBzdWdnZXN0IHRoYXQgaWYgdGhlIGN1cnJlbnQgY3B1IGlzIHdpdGhp biB0aGUgbmV3IGFsbG93YWJsZSAKPiBjcHVzLCBpdCBzaG91bGQganVzdCBza2lwIGRvaW5nIGFm ZmluZV9tb3ZlX3Rhc2soKS4gT3RoZXJ3aXNlLCBpdCAKPiBzaG91bGQgZmFpbCBfX3NldF9jcHVz X2FsbG93ZWRfcHRyX2xvY2tlZCgpLgoKTWF5YmUgbGlrZQoKZGlmZiAtLWdpdCBhL2tlcm5lbC9z Y2hlZC9jb3JlLmMgYi9rZXJuZWwvc2NoZWQvY29yZS5jCmluZGV4IDgzODYyM2I2ODAzMS4uNWQ5 ZWExNTUzZWMwIDEwMDY0NAotLS0gYS9rZXJuZWwvc2NoZWQvY29yZS5jCisrKyBiL2tlcm5lbC9z Y2hlZC9jb3JlLmMKQEAgLTI3OTQsOSArMjc5NCw5IEBAIHN0YXRpYyBpbnQgX19zZXRfY3B1c19h bGxvd2VkX3B0cl9sb2NrZWQoc3RydWN0IAp0YXNrX3N0cnVjdCAqcCwKIMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoCBpZiAoY3B1bWFza19lcXVhbCgmcC0+Y3B1c19tYXNrLCBuZXdfbWFz aykpCiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGdvdG8g b3V0OwoKLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgaWYgKFdBUk5fT05fT05DRShwID09 IGN1cnJlbnQgJiYKLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgIGlzX21pZ3JhdGlvbl9kaXNhYmxlZChwKSAmJgotwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgIWNw dW1hc2tfdGVzdF9jcHUodGFza19jcHUocCksIApuZXdfbWFzaykpKSB7CivCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgIGlmIChpc19taWdyYXRpb25fZGlzYWJsZWQocCkgJiYKK8KgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCAhY3B1bWFza190ZXN0X2NwdSh0YXNrX2NwdShw KSwgbmV3X21hc2spKSB7CivCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoCBXQVJOX09OX09OQ0UocCA9PSBjdXJyZW50KTsKIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgcmV0ID0gLUVCVVNZOwogwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBnb3RvIG91dDsKIMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoCB9CkBAIC0yODE4LDcgKzI4MTgsMTEgQEAgc3RhdGljIGludCBfX3NldF9j cHVzX2FsbG93ZWRfcHRyX2xvY2tlZChzdHJ1Y3QgCnRhc2tfc3RydWN0ICpwLAogwqDCoMKgwqDC oMKgwqAgaWYgKGZsYWdzICYgU0NBX1VTRVIpCiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqAgdXNlcl9tYXNrID0gY2xlYXJfdXNlcl9jcHVzX3B0cihwKTsKCi3CoMKgwqDCoMKgwqAgcmV0 ID0gYWZmaW5lX21vdmVfdGFzayhycSwgcCwgcmYsIGRlc3RfY3B1LCBmbGFncyk7CivCoMKgwqDC oMKgwqAgaWYgKCFpc19taWdyYXRpb25fZGlzYWJsZWQocCkgfHwgKGZsYWdzICYgU0NBX01JR1JB VEVfRU5BQkxFKSkgeworwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCByZXQgPSBhZmZpbmVf bW92ZV90YXNrKHJxLCBwLCByZiwgZGVzdF9jcHUsIGZsYWdzKTsKK8KgwqDCoMKgwqDCoCB9IGVs c2UgeworwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCB0YXNrX3JxX3VubG9jayhycSwgcCwg cmYpOworwqDCoMKgwqDCoMKgIH0KCiDCoMKgwqDCoMKgwqDCoCBrZnJlZSh1c2VyX21hc2spOwoK SSBoYXZlbid0IHRlc3RlZCBpdCBteXNlbGYsIHRob3VnaC4KCkNoZWVycywKTG9uZ21hbgoKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1r ZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJu ZWwK