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Sat, 26 Sep 2020 00:55:42 -0700 (PDT) From: Christian Hewitt Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.15\)) Subject: Deadlock under load with Linux 5.9 and other recent kernels Message-Id: <5878AC01-8A1B-4F39-B4BD-BDDEFAECFAA2@gmail.com> Date: Sat, 26 Sep 2020 11:55:39 +0400 To: linux-block@vger.kernel.org, linux-usb@vger.kernel.org, linux-amlogic@lists.infradead.org X-Mailer: Apple Mail (2.3445.104.15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200926_035545_433096_23B8FF41 X-CRM114-Status: GOOD ( 13.66 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: furkan@fkardame.com, Brad Harper Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org SSBhbSB1c2luZyBhbiBBUk0gU0JDIGRldmljZSB3aXRoIEFtbG9naWMgUzkyMlggY2hpcCAoQmVl bGluayBHUy1LaW5nLVgsIGFuIEFuZHJvaWQgU1RCKSB0byBib290IHRoZSBLb2RpIG1lZGlhY2Vu dHJlIGRpc3RybyBMaWJyZUVMRUMgKHdoaWNoIEkgd29yayBvbikgYWx0aG91Z2ggdGhlIGlzc3Vl IGlzIGFsc28gcmVwcm9kdWNpYmxlIHdpdGggTWFuamFybyBhbmQgQXJtYmlhbiBvbiB0aGUgc2Ft ZSBoYXJkd2FyZSwgYW5kIHdpdGggdGhlIEdULUtpbmcgYW5kIEdULUtpbmcgUHJvIGRldmljZXMg ZnJvbSB0aGUgc2FtZSB2ZW5kb3IgLSBhbGwgdGhyZWUgZGV2aWNlcyBhcmUgdXNpbmcgYSBjb21t b24gZHRzaToKCmh0dHBzOi8vZ2l0aHViLmNvbS9jaGV3aXR0L2xpbnV4L2Jsb2IvYW1sb2dpYy01 LjktaW50ZWcvYXJjaC9hcm02NC9ib290L2R0cy9hbWxvZ2ljL21lc29uLWcxMmItZ3NraW5nLXgu ZHRzCmh0dHBzOi8vZ2l0aHViLmNvbS9jaGV3aXR0L2xpbnV4L2Jsb2IvYW1sb2dpYy01LjktaW50 ZWcvYXJjaC9hcm02NC9ib290L2R0cy9hbWxvZ2ljL21lc29uLWcxMmItZ3RraW5nLXByby5kdHMK aHR0cHM6Ly9naXRodWIuY29tL2NoZXdpdHQvbGludXgvYmxvYi9hbWxvZ2ljLTUuOS1pbnRlZy9h cmNoL2FybTY0L2Jvb3QvZHRzL2FtbG9naWMvbWVzb24tZzEyYi1ndGtpbmcuZHRzCmh0dHBzOi8v Z2l0aHViLmNvbS9jaGV3aXR0L2xpbnV4L2Jsb2IvYW1sb2dpYy01LjktaW50ZWcvYXJjaC9hcm02 NC9ib290L2R0cy9hbWxvZ2ljL21lc29uLWcxMmItdzQwMC5kdHNpCgpJIGhhdmUgc2NoZW1hdGlj cyBmb3IgdGhlIGRldmljZXMsIGJ1dCBjYW4gb25seSBzaGFyZSB0aG9zZSBwcml2YXRlbHkgb24g cmVxdWVzdC4KCkZvciB0ZXN0aW5nIEkgYW0gYm9vdGluZyBMaWJyZUVMRUMgZnJvbSBTRCBjYXJk LiBUaGUgYm94IGhhcyBhIDRUQiBTQVRBIGRyaXZlIGludGVybmFsbHkgY29ubmVjdGVkIHdpdGgg YSBVU0IgPiBTQVRBIGJyaWRnZSwgc2VlIGRtZXNnOiBodHRwOi8vaXguaW8vMnlMaCBhbmQgSSBj b25uZWN0IGEgVVNCIHN0aWNrIHdpdGggYSA0R0IgSVNPIGZpbGUgdGhhdCBJIGNvcHkgdG8gdGhl IGludGVybmFsIFNBVEEgZHJpdmUuIFdpdGhpbiAxMC0yMCBzZWNvbmRzIG9mIHN0YXJ0aW5nIHRo ZSBjb3B5IHRoZSBib3ggZGVhZGxvY2tzIG5lZWRpbmcgYSBoYXJkIHBvd2VyIGN5Y2xlIHRvIHJl Y292ZXIuIFRoZSB0aW1pbmcgb2YgdGhlIGRlYWRsb2NrIGlzIHZhcmlhYmxlIGJ1dCB0aGUgZGV2 aWNlIF9hbHdheXNfIGRlYWRsb2Nrcy4gQWx0aG91Z2ggSSBhbSB1c2luZyBhIHNpbXBsZSBjb3B5 IHVzZS1jYXNlLCB0aGVyZSBhcmUgc2ltaWxhciByZXBvcnRzIGluIEFybWJpYW4gZm9ydW1zIHBl cmZvcm1pbmcgdGFza3MgbGlrZSBpbnN0YWxscy91cGRhdGVzIHRoYXQgaW52b2x2ZSBJL08gbG9h ZHMuCgpGb2xsb3dpbmcgYWR2aWNlIGluIHRoZSAjbGludXgtYW1sb2dpYyBJUkMgY2hhbm5lbCBJ IGFkZGVkIENPTkZJR19TT0ZUTE9DS1VQX0RFVEVDVE9SIGFuZCBDT05GSUdfREVURUNUX0hVTkdf VEFTSyBhbmQgd2FzIGFibGUgdG8gZ2V0IG91dHB1dCBvbiB0aGUgSERNSSBzY3JlZW4gKGl0IGlz IG5vdCBwb3NzaWJsZSB0byBjb25uZWN0IHRvIFVBUlQgcGlucyB3aXRob3V0IGRlc3Ryb3lpbmcg dGhlIGJveCBjYXNlKS4gSWYgeW91IGFkdmFuY2UgdGhlIGZvbGxvd2luZyB2aWRlbyBmcmFtZSBi eSBmcmFtZSBpbiBWTEMgeW91IGNhbiBzZWUgdGhlIG91dHB1dDoKCmh0dHBzOi8vd3d3LmRyb3Bi b3guY29tL3Mva2x2Y2l6aW04Y3M1bHplL2xvY2t1cF9jbGlwLm1vdj9kbD0wCgpJIGFtIG5vdCBh IGNvZGluZyBkZXZlbG9wZXIgc28gdGhlIG91dHB1dCBkb2VzbuKAmXQgbWVhbiBtdWNoIHRvIG1l LCBidXQgSSBhbSBoYXBweSB0byBmb2xsb3cgZ3VpZGFuY2Ugb3IgaW5zdGFsbCBwYXRjaGVzIHRv IGdldCBtb3JlIG91dHB1dCBvciB0ZXN0IHRoaW5ncy4KCkNocmlzdGlhbgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hbWxvZ2ljIG1haWxpbmcg bGlzdApsaW51eC1hbWxvZ2ljQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJh ZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hbWxvZ2ljCg==